Palantir forward deployed engineer interview

By FDE Interview Prep, a SourceStrongAI company

Palantir doesn’t publish your loop, but it does publish the competencies it interviews for, the student and early-talent sequence step by step, and its application questions word for word. ^{[8, 9, 10]}Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring pageSource 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring pageSource 10Apply: Forward Deployed Software Engineer, New Grad - Commercial (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting This guide turns that into a plan: which of its roles you are really applying for, the round types candidates report, what to say in each, and a worked answer to the shared-interests prompt two candidates reported getting.

The short answer: Palantir publishes the outline and the skills, not the loop. It says you start with one or two phone interviews and move to an onsite if there is a fit, and that the number and format of your interviews are personalized to your skills and the role. ^[8]Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page Candidates on Reddit and Blind have described loops built from the same parts: a coding screen, then rounds drawn from coding, decomposition, learning and re-engineering, then a hiring manager. ^{[11, 12, 13, 14, 15]}Source 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 12Palantir Interview Process... So Far, FDSE 2024 (post by u/kircher32245)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 13Palantir FDSE virtual onsitePublisherBlind (teamblind.com)Source typecandidate report on BlindSource 14Palantir Forward Deployed Software EngineerPublisherBlind (teamblind.com)Source typecandidate report on BlindSource 15Palantir hm callPublisherBlind (teamblind.com)Source typecandidate report on Blind Prepare every round type, and ask your recruiter which ones you will get.

The evidence for everything below is at the end of this guide, each kind in its own list, and the evidence map shows how to weigh a published process against a report.

Which Palantir role you are interviewing for

Pin this down before anything else, because the roles are screened differently. In our September 2026 count of public postings, Palantir had 110 matching Lever postings, 75 of them FDSE or other engineering titles and 35 for Deployment Strategist, second only to Databricks among the boards we read. ^[7]Source 7Our analysis: FDE posting censusPublisherfdeinterviewprep.com researchSource typeour analysis of public data

• Forward Deployed Software Engineer (FDSE). Palantir calls FDSEs Deltas. Its careers page says they sit in Business Development with a mandate to achieve technical and operational outcomes for customers, while Software Engineers, the Devs, sit in Product Development. ^[16]Source 16Palantir Careers | Students and Early TalentPublisherPalantir TechnologiesSource typecompany hiring page Palantir’s blog frames the difference as “one customer, many capabilities” against a Dev’s “one capability, many customers”. ^{[17, 18]}Source 17Dev versus Delta: Demystifying engineering roles at PalantirPublisherPalantir BlogSource typecompany blogSource 18A Day in the Life of a Palantir Forward Deployed Software EngineerPublisherPalantir BlogSource typecompany blog
• Deployment Strategist. The posting says strategists go onsite with customer analysts and work with Forward Deployed Engineers to integrate data into a pipeline, and it still asks for experience with programming, scripting or statistical packages. ^[4]Source 4Deployment Strategist (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Deployment strategist vs forward deployed engineer compares the two jobs.
• Forward Deployed AI Engineer. The New York posting says the role owns Gen AI strategy and implementation with customers, and asks for past experience building solutions with LLMs. ^[6]Source 6Forward Deployed AI Engineer (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting
• Government, Intel and NATO roles. These carry clearance requirements: an active clearance at or above Top Secret, or the willingness to obtain one, for the Washington, D.C. US Government posting, an active Full Scope Poly clearance for the Intel posting, and a NATO clearance, or the ability to obtain one, for the London NATO posting. ^{[2, 19, 20]}Source 2Forward Deployed Software Engineer - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 19Forward Deployed Software Engineer - Intel (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 20Forward Deployed Software Engineer - NATO (London) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting FDE jobs that need a security clearance covers what that changes.
• New grads and interns get the one loop Palantir describes step by step. ^[9]Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring page The Palantir FDSE internship interview walks through it.

If you’re applying for Forward Deployed AI Engineer

Beyond LLM experience, the posting asks for “a deep understanding of overall Gen AI landscape.” ^[6]Source 6Forward Deployed AI Engineer (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting We found no candidate report of this loop, so no one can tell you how it differs from the FDSE loop. Prepare the FDSE round types below, plus one LLM project you can defend end to end: how you evaluated it, where it failed and what it cost to run. The questions on an eval harness for a support agent, fine-tuning versus retrieval, why the assistant can’t be right every time and prompt injection are free practice for that conversation.

Platform vocabulary worth having

Palantir’s own blog puts the Palantir Ontology at the center of its software architecture. ^[21]Source 21Connecting Agents to Decisions (Palantir Blog)PublisherPalantir BlogSource typecompany blog Palantir’s Ontology documentation describes it as mapping an organization’s existing data sources into objects, properties and links, with action types that capture data from the people doing the work or run decision processes that connect to the systems they already have. We found no candidate report that says the FDSE rounds test Foundry knowledge, while the Build to Apply postings do require a project built on Foundry and AIP. ^{[5, 22]}Source 5Deployment Strategist, Build to Apply - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 22Deployment Strategist, Build to Apply - US Government (San Diego, CA) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Treat the words as a modeling habit, not a syllabus: in a decomposition, naming the objects, how they link and what action a user takes is the shape Palantir’s own software is built around.

The loop, in Palantir’s words

Palantir’s Getting Hired pages describe its engineering hiring in general, not the FDSE loop alone, and its careers site says the process differs for FDSE and Software Engineer. ^[16]Source 16Palantir Careers | Students and Early TalentPublisherPalantir TechnologiesSource typecompany hiring page What the pages publish:

1. Phone interviews. Palantir says they are typically 20 to 45 minutes each, include a coding question for engineering roles and may use HackerRank or Google Docs. ^[23]Source 23The Phone Interview - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page
2. An onsite, in person or virtual, where interviewers ask how you have executed, challenged yourself, motivated others and made judgments, and about your failures. ^[8]Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page
3. Competencies instead of a script. Palantir publishes a guide for each skill it interviews for: Writing Good Code, Analyzing the Efficiency of Code, Navigating Open-Ended Questions, Solving Technical Problems and Working Inside Existing Systems. ^[8]Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page

The only step-by-step version is for students and early talent. There, the virtual onsite is two one-hour interviews, learning and decomposition, with behavioral and technical questions, and the hiring manager interview is customized based on onsite feedback. ^[9]Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring page

The loop, in candidates’ words

In short: what the first technical round contains differs from report to report, so be ready for an algorithm problem, a timed object-oriented design, a round split between decomposition and coding, or even a learning round. Here is what individual candidates reported:

• One candidate reported, in November 2024, a 1-hour HackerRank CodePair screen with a LeetCode-medium hash-map problem. ^[12]Source 12Palantir Interview Process... So Far, FDSE 2024 (post by u/kircher32245)PublisherReddit r/csMajorsSource typecandidate report on Reddit
• One candidate reported, in December 2025, a Python object-oriented coding screen cut off at the 30-minute mark. ^[11]Source 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on Reddit
• Two candidates reported, in August 2025 and August 2026, a single round split into 20 minutes of decomposition and 20 minutes of coding. ^{[24, 25]}Source 24Palantir FDSE Interview (rejected but idk why) (post by u/Master_el)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 25Interview Experience With Palantir FDE [ Aug 2026] (post by u/AccomplishedDrama430)PublisherReddit r/csMajorsSource typecandidate report on Reddit
• Two posters wrote, in July and August 2026, that a learning interview came first, and one asked whether that order was normal now. ^{[26, 27]}Source 26Palantir FDE Commercial Delta Interview (post by u/Popular_Elephant_349)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 27Palantir FDSE Intern Learning Interview (post by u/Realistic-Major9132)PublisherReddit r/csMajorsSource typecandidate report on Reddit

Clearance changes the shape too. One candidate reported, in October 2024, that Palantir skipped their first round because they hold a clearance, and one reported, in March 2025, being invited straight to the final loop for the Intel role. ^{[28, 29]}Source 28Palantir FDSE (experience hire) interview tips? (post by u/Lioil1)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 29Palantir interview - FDSE IntelPublisherBlind (teamblind.com)Source typecandidate report on Blind

Two patterns recur. Candidates who reached the hiring manager described that round after the technical ones, which fits Palantir’s graphic, where the hiring manager interview is customized from onsite feedback. ^{[9, 11, 15]}Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring pageSource 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 15Palantir hm callPublisherBlind (teamblind.com)Source typecandidate report on Blind And the technical rounds carry behavioral questions: Palantir’s graphic says its onsite interviews have both, and one candidate reported, in December 2025, decomposition and learning rounds that each gave 15 minutes to behavioral questions before 45 technical. ^{[9, 11]}Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring pageSource 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on Reddit Palantir FDSE interview experiences lines the reports up row by row.

Round by round: what to prepare

The application is round zero

The application form is the first thing you hand Palantir, so draft it like a round. The New Grad FDSE form asks you to confirm you want the Forward Deployed Software Engineer role rather than Software Engineer, and asks, word for word: “Tell us about a time you changed your mind about something. (150 words max)” ^[10]Source 10Apply: Forward Deployed Software Engineer, New Grad - Commercial (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Write it as a short story with a turn in the middle: what you believed, the evidence that changed it, what you did next. Here is an illustrative answer we wrote about a fictional project, to show the shape:

“I was sure the late campus shuttles were a timetable problem, so during my internship at a regional transit agency I spent a week building a better schedule. Before presenting it, I rode the route with a driver for a morning. The delays weren’t in the timetable. They came from two stops where the wheelchair ramp took minutes to deploy, and nobody had ever logged it. I changed my mind about the problem, not just the fix. I dropped the schedule, added a ramp button to the drivers’ tablet app, and within a month the data showed those two stops caused most of the lateness. The agency moved its low-floor buses onto that route. Now I ride along before I build.”

It stays under the limit, and the change of mind is about evidence met in the field, which is the job. A decision you reversed is the free practice question for the same muscle.

The US Government FDSE form asks about your clearance status, whether you support the travel percentage the posting advertises, whether you are comfortable with its pay range, and whether you support frequent travel to Europe or the IndoPacific. ^[30]Source 30Apply: Forward Deployed Software Engineer - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Answer them the way you would on a recruiter call, because they are the same questions a recruiter can ask again, and a “yes” you don’t mean only moves the problem later.

The coding screen

Palantir’s guides ask for three things: turn an algorithm into working code, think about edge cases and how the code could break, and know both time and space complexity. ^{[31, 32]}Source 31Writing Good CodePublisherPalantirSource typecompany hiring pageSource 32Analyzing the Efficiency of CodePublisherPalantirSource typecompany hiring page Practice two shapes. Candidates have reported algorithm problems, such as a hash-map problem and a graph search. ^{[12, 33]}Source 12Palantir Interview Process... So Far, FDSE 2024 (post by u/kircher32245)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 33Palantir FDSE Interview Experience (REJECTION~) (post by u/bosslee21)PublisherReddit r/csMajorsSource typecandidate report on Reddit One candidate reported, in December 2025, a small object-oriented design on a strict clock. ^[11]Source 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on Reddit The free messy CSV parser drills practical data code, OOP inventory in Pro is built for the object-oriented kind, and what FDE coding rounds test covers the rest.

Open with a plan the interviewer can hold you to:

“I’ll get a correct version running on a small example, say its complexity, then handle the edge cases. If we run short, you’ll have working code.”

Decomposition, with and without data

Palantir’s advice for open-ended questions is the whole method in two lines: state the alternatives and trade-offs, then reach a concrete approach and deliver a functioning idea first. ^[34]Source 34Navigating Open-Ended Questions - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page Its preparation advice includes finding a public dataset and thinking of something interesting to do with it. ^[34]Source 34Navigating Open-Ended Questions - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page

Some prompts come with data. Two new-grad candidates on Blind, in threads active in 2022, said their decomposition came with a sample dataset, and one described 8,000 records of London taxi data with 8 columns and a request for a first-cut solution for drivers that could ship in a week. ^{[35, 36]}Source 35Palantir Learning & Decomposition Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 36Update: interview experience - Palantir new grad FDSE interview (Blind)PublisherBlindSource typecandidate report on Blind A worked Palantir decomposition example runs that taxi prompt end to end.

Some prompts come with code. Two candidates reported, in August 2025 and August 2026, a technical round of 20 minutes of decomposition and 20 minutes of coding, and the earlier one named the prompt: an app that connects users based on shared interests and activities. ^{[24, 25]}Source 24Palantir FDSE Interview (rejected but idk why) (post by u/Master_el)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 25Interview Experience With Palantir FDE [ Aug 2026] (post by u/AccomplishedDrama430)PublisherReddit r/csMajorsSource typecandidate report on Reddit One candidate reported, in March 2025, a decomposition that moved from designing a system where users share their interests to implementing search(user_id, users), returning users who share interests but have never met. ^[33]Source 33Palantir FDSE Interview Experience (REJECTION~) (post by u/bosslee21)PublisherReddit r/csMajorsSource typecandidate report on Reddit A commenter who did not name the role reported, in May 2026, that the breakdown in their 45-minute round covered the user, the UI and UX flow, how data would be stored and the metrics to track. ^[37]Source 37Palantir FDSE Technical Interview (comment by u/shinji_dontdotoomuch)PublisherReddit r/csMajorsSource typecandidate report on Reddit

So practice that round end to end, in both halves. Here is a practice version we wrote in that shape.

The first half: scope it out loud. Pick one user, one flow, the data and one metric, then cut to a first version:

“Let me pick one user so we’re designing for someone: a person new in town who wants a climbing partner. Their flow is three steps: pick interests, see a ranked list of suggestions, and mark someone as met after they meet. Behind that I’d keep three tables: users, their interests, and who has met whom. The one metric I’d watch is the share of suggestions that end in a ‘met’ mark within two weeks, because it says whether the matching works, not just whether people browse. For the first version: one city, no chat, suggestions only. That’s what I’d ship first. The function behind the suggestions screen is search. Want me to write it?”

The three tables, as you’d sketch them:

users(id, city)
user_interests(user_id, interest)
meetings(user_id, met_user_id, met_at)

The second half: write the function. Before any code, ask the questions that change the code:

“Does ‘share an interest’ mean one tag in common, or should more overlap rank higher? And if Ana has met Ben, does Ben’s record say so too?”

Say the interviewer answers: rank by overlap, and assume each user keeps their own list of people they have met. The meetings table becomes each user’s met set. Then write it plainly:

from dataclasses import dataclass, field

@dataclass
class User:
    id: int
    interests: set[str]
    met: set[int] = field(
        default_factory=set)

def search(user_id, users):
    by_id = {u.id: u for u in users}
    me = by_id.get(user_id)
    if me is None:
        raise KeyError(f"no user {user_id}")
    mine = me.interests
    matches = []
    for other in users:
        if other.id == user_id:
            continue
        if other.id in me.met:
            continue
        shared = mine & other.interests
        if shared:
            matches.append(
                (-len(shared), other.id))
    matches.sort()
    return [uid for _, uid in matches]

Then run it on a tiny example, out loud:

users = [
    User(1, {"climbing", "chess", "jazz"},
         met={4}),
    User(2, {"chess", "jazz"}),
    User(3, {"running"}),
    User(4, {"chess", "jazz", "climbing"}),
    User(5, {"jazz"}),
]
print(search(1, users))  # [2, 5]

Narrate what it returns: “User 2 shares chess and jazz, user 5 shares only jazz, user 3 shares nothing, and user 4 is skipped because we’ve met. Equal overlap sorts by id, so the order is the same on every run.” If the interviewer says a meeting is recorded on one side only, show it’s a one-line change: add if user_id in other.met: continue beside the other skip.

Then name the cost before you are asked:

“Each call builds a dict and intersects my interests with every user’s, so it’s O(n * k), where k is the number of interests, plus O(m log m) to sort the m matches. If this is called often, I’d build the id lookup once and keep an index from each interest to the users who have it, so I only count overlaps among real candidates.”

That is the order Palantir’s own advice asks for: a functioning idea first, then expand it. Improve city bus reliability and build a feature from data are free practice prompts in the same round. For the prompt a former recruiting lead described, read the insider trading question.

The learning round

Palantir’s early-talent timeline names learning as one of its two onsite interviews. ^[9]Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring page What you are taught varies. One candidate reported, in December 2025, that their Government FDSE learning round gave them a database schema and documentation and asked them to implement functions on the spot using the documentation. ^[11]Source 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on Reddit A Blind commenter who said their interview was for a software engineer role described, in July 2022, about 4 stages of 5-7 minutes each: reading application code, discussing its limitations and coding fixes. ^{[35, 38]}Source 35Palantir Learning & Decomposition Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 38Palantir learning interview (Blind)PublisherBlindSource typecandidate report on Blind One candidate for a Government FDSE role reported, in August 2025, that the hardest part for them was learning SQL, which they had never used. ^[39]Source 39Palantir Forward Deployed Engineer Interview ExperiencePublisherAced (formerly Exponent)Source typecandidate’s personal write-up

The skill to show is visible learning: say back what you were just taught before you use it, and say where it breaks after. Here is a practice version we wrote, in the schema-and-documentation shape. The documentation says:

shipments(id, order_id, status, updated_at)
Rows are append-only. An order's current
status is its latest row.

Before you type, say the rule back and find the edge:

“Let me say the rule back: rows are never updated, so an order’s current status is its newest row. Where it could break: two rows with the same timestamp. How should ties resolve?”

Suppose the interviewer says the higher id wins, because ids are assigned in insert order. Some sample rows show why you asked:

id  order_id  status   updated_at
3   A-2       packed   03-01 10:00
5   A-2       on_hold  03-01 16:00
6   A-2       shipped  03-01 16:00

Then the query, which picks the newest row per order and breaks the tie by id:

SELECT order_id, status, updated_at
FROM (
  SELECT order_id, status, updated_at,
    ROW_NUMBER() OVER (
      PARTITION BY order_id
      ORDER BY updated_at DESC, id DESC
    ) AS rn
  FROM shipments
) AS latest
WHERE rn = 1
ORDER BY order_id;

Order A-2 comes back as shipped, not on_hold. Without id DESC, either row could win, and you’d be guessing. Close with where it breaks next: “If timestamps can arrive late from another system, the latest row isn’t always the newest event, and I’d ask which clock to trust.”

The free SQL questions latest status per ticket and sessionize page views practice the same moves. Palantir’s learning interview has a Python worked example, and learn a new library fast is the practice question in Pro.

The re-engineering round

Palantir’s public pages don’t use the name, but they name the skill: working within existing systems, codebases and infrastructure, since developers spend far more time debugging, modifying and extending code than writing new code. ^[40]Source 40Working Inside Existing SystemsPublisherPalantirSource typecompany hiring page A poster on Blind wrote, in May 2024, that the round “is about going through an existing code, debugging and adding a new feature.” ^{[41, 42]}Source 41Palantir re-engineering interview (Blind)PublisherBlindSource typecandidate report on BlindSource 42Palantir re-engineering interview (Blind)PublisherBlindSource typecandidate report on Blind In the same poster’s earlier thread, a commenter wrote, in May 2024, that they were handed around 50 lines of copy-pasted Java and asked to fix a bug in the last 30 minutes, after 30 minutes on their past work, and another commenter said the bug “wasn’t java specific.” ^{[41, 42]}Source 41Palantir re-engineering interview (Blind)PublisherBlindSource typecandidate report on BlindSource 42Palantir re-engineering interview (Blind)PublisherBlindSource typecandidate report on Blind

The routine is: trace one path through before you change anything, reproduce the bug on the smallest input, fix the cause, then extend. Here is a practice version we wrote. The report says an export is missing rows:

def fetch_all(get_page, page_size=100):
    rows, offset = [], 0
    while True:
        page = get_page(offset, page_size)
        if len(page) < page_size:
            break
        rows.extend(page)
        offset += page_size
    return rows

What to say, move by move:

“I’ll trace one call: it asks for pages until a page comes back short. I’ll run the smallest input that shows the bug: 250 rows, page size 100. Expected 250, got 200. The loop exits on the short page before appending it. I’ll move the extend above the check and add a test for a partial last page. Now the feature you asked for.”

The fix swaps two lines:

        page = get_page(offset, page_size)
        rows.extend(page)
        if len(page) < page_size:
            break

And the test that would have caught it:

def test_partial_last_page():
    data = list(range(250))
    def get_page(offset, size):
        return data[offset:offset + size]
    assert fetch_all(get_page) == data

Add a last sentence before the feature: “If the total is an exact multiple of the page size, this makes one extra request that returns an empty page. That’s correct, just one call more.” Palantir’s re-engineering interview walks through a longer one, the free testable refactor question drills code you didn’t write, and debug unfamiliar code is the drill in Pro.

If your loop has a system design piece

One experienced-hire candidate reported, in October 2024, that the recruiter described their final round as coding, “deconstruction” and a system design piece. ^[28]Source 28Palantir FDSE (experience hire) interview tips? (post by u/Lioil1)PublisherReddit r/csMajorsSource typecandidate report on Reddit That is one report, so ask your recruiter; but if you have years of experience, prepare one design you can draw in a few minutes: where the customer’s data comes from, how bad rows are caught and explained, and who can see what. Enterprise system design is different is the free lesson, and unify a retailer’s data sources and a bulk import that explains every rejected row are free practice.

Behavioral questions and the hiring manager

Palantir tells you the behavioral prompts: executing, challenging yourself, motivating others, judgment calls and failures. ^[8]Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page Have one short story for each, and one about a failure that was yours; that question is free.

Mission. It can come up in any round, and the hiring manager round is a likely place for it. A Palantir blog post from October 2025 says the only way to find mission commitment in interviews is to look for “evidence of where it emerged naturally in people’s backstory, where mission-driven individuals encountered problems they believed must be solved.” ^[43]Source 43Beyond Founder Mode: Mission Mode (Palantir Blog)PublisherPalantir BlogSource typecompany blog One candidate reported, in December 2025, a rejection a couple of hours after the hiring manager round, which they put down to mission alignment rather than technical ability. ^[11]Source 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on Reddit That is one poster’s reading, but prepare as if it were true, with three sentences: the problem you met, what you did about it before anyone asked, and why Palantir’s customers are the next place to do it. An illustrative answer we wrote about a fictional project:

“In my last job, at a county health department, I watched case investigators retype lab results from faxes into three systems. Nobody asked me to, but I wrote a parser for the lab’s export on my own time, and within a month it was how the team worked. I want a job where that kind of problem is the whole job: one customer, many capabilities, the way Palantir describes the Delta role.”

If you’re applying to the Government track, say plainly what you think about that work, because the form asks about clearance and the interview may ask why. For example: “I want my engineering used where the stakes are public, and I’d rather help build those systems well than watch from outside.” If you can’t say something like that and mean it, the Commercial track is the better application. Why FDE, not software engineering and why this company are free practice, and the bridge story is the free lesson behind both.

The hiring manager’s problem. Shilpa Balaji, Palantir’s former FDE recruiting lead, told First Round Review, in February 2026, that its FDE hiring managers would describe a problem a customer was working on that no one had been able to solve, and ask how the candidate would solve it. ^[44]Source 44So You Want to Hire a Forward Deployed EngineerPublisherFirst Round ReviewSource typenews report Don’t open with a solution. Open with the questions a forward deployed engineer asks on day one:

“Before I propose anything: who feels this problem today, what have they already tried, and what data exists?”

Then give a first version the customer could use in a week, and what you’d learn from it.

What she said she screened against. This is one former recruiting lead’s view, not a published rule. Balaji told First Round Review that a candidate who came in overly dogmatic or set in their ways was a red flag, and that people with more than 10 years at a FAANG company, for example, were in the “no fly zone”. ^[44]Source 44So You Want to Hire a Forward Deployed EngineerPublisherFirst Round ReviewSource typenews report She also told First Round Review that grit was probably the hallmark of the best FDEs she worked with, and that the best were compulsive builders. ^[44]Source 44So You Want to Hire a Forward Deployed EngineerPublisherFirst Round ReviewSource typenews report If you come from a large tech company, show you can drop the house way of doing things: “At my last company I’d reach for our internal platform; here I’d start with the smallest thing the customer can use this week.” Take me through one project in depth is free practice for the grit and building half.

The Deployment Strategist decomposition

Two reports about this round disagree, which is useful. Answering a question about the Deployment Strategist round, a Blind commenter wrote, in April 2022, that the Analytical Decomp was very similar to a consulting case interview, but more user focused and data oriented. ^{[45, 46]}Source 45Palantir Deployment Strategist Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 46Palantir Deployment Strategist (Blind)PublisherBlindSource typecandidate report on Blind One candidate reported, in September 2025, that going in expecting a consulting case was “exactly the wrong mindset”. ^[47]Source 47Palantir Deployment Strategist Interview ExperiencePublisherAced (formerly Exponent)Source typecandidate’s personal write-up Other Blind comments put the weight on data. A Blind commenter who said they got an offer wrote, in October 2022, “As long as you can think in data terms it’s enough.” ^{[45, 46]}Source 45Palantir Deployment Strategist Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 46Palantir Deployment Strategist (Blind)PublisherBlindSource typecandidate report on Blind A Blind commenter who answered “I did” when asked whether anyone had been through the Deployment Strategist interview wrote, in April 2022, that they reached the final round, that “They care about data intuition” and that the whole analysis “should center around data and the potential solutions to the problem.” ^{[36, 48, 49]}Source 36Update: interview experience - Palantir new grad FDSE interview (Blind)PublisherBlindSource typecandidate report on BlindSource 48Palantir Decomposition Interview Tips (Blind)PublisherBlind (Teamblind)Source typecandidate report on BlindSource 49Palantir Deployment Strategist Interview (Blind)PublisherBlind (Teamblind)Source typecandidate report on Blind

Read together: use a case’s structure, but make the data carry it. Name the tables you would need, how they join, and the first metric you would put in front of the customer, before you reach a recommendation. Here is a practice version we wrote. A hospital network wants fewer ambulance diversions, the hours when an emergency department turns ambulances away. Say the data first:

ed_arrivals(facility_id, hour, arrivals)
bed_census(facility_id, hour, beds_free)
diversion_events(facility_id,
                 started_at, ended_at)

“Arrivals and beds join on facility and hour, and a diversion event covers every hour between its start and end, so for every hour I can see arrivals, free beds and whether we were on diversion. The first metric I’d show is hours on diversion per facility per week, as one chart per facility. Then I’d line those hours up against free beds to see whether diversion follows bed shortages or something else, like staffing.”

The first metric is one query, written here for SQLite:

SELECT facility_id,
  strftime('%Y-%W', started_at) AS week,
  ROUND(SUM(
    julianday(ended_at)
    - julianday(started_at)) * 24, 1)
    AS hours_on_diversion
FROM diversion_events
GROUP BY facility_id, week
ORDER BY facility_id, week;

Say its simplification aloud: an event that runs past the end of a week counts in the week it started. Reduce hospital readmissions and a factory’s unplanned downtime are free prompts to practice the same moves.

Build to Apply

The Deployment Strategist, Build to Apply - US Government track asks you to apply with a project: a Foundry and AIP workflow and a demo video of under 5 minutes, submitted within 7-10 days of starting to build. ^{[5, 22]}Source 5Deployment Strategist, Build to Apply - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 22Deployment Strategist, Build to Apply - US Government (San Diego, CA) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting The postings say Palantir wants to understand why you selected the problem, how you approached it with its products and the solution you developed. ^{[5, 22]}Source 5Deployment Strategist, Build to Apply - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 22Deployment Strategist, Build to Apply - US Government (San Diego, CA) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting They point to learn.palantir.com for a crash course, and encourage you to bring public data or make your own notional data. ^[5]Source 5Deployment Strategist, Build to Apply - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Palantir Build to Apply covers how to build and film it.

Pay, briefly

The posted ranges listed below this guide, each with its date, are salary ranges, not total pay. As of September 2026, the New York FDSE posting says total compensation may also include RSUs, a sign-on bonus and other incentives. ^[1]Source 1Forward Deployed Software Engineer (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting For a self-reported view of the whole package, as of September 2026, Levels.fyi’s Palantir Forward Deployed Engineer page for the United States gives a median total package of $201K, and the percentile data behind that median has 51 data points. ^[50]Source 50Palantir Forward Deployed Engineer SalaryPublisherLevels.fyiSource typeself-reported pay on Levels.fyi In labor condition applications (the filing behind an H-1B) certified from October 2024 to June 2026, Palantir’s 72 certified filings with “Forward Deployed” titles had a median offered base wage of $146,666. ^{[51, 52, 53, 54, 55]}Source 51LCA_Disclosure_Data_FY2026_Q3.xlsx (DOL OFLC LCA disclosure data)PublisherUS Department of Labor, Office of Foreign Labor CertificationSource typeUS Department of Labor filing dataHow we used this dataSource 52LCA_Disclosure_Data_FY2025_Q1.xlsx (DOL OFLC LCA disclosure data)PublisherUS Department of Labor, Office of Foreign Labor CertificationSource typeUS Department of Labor filing dataHow we used this dataSource 53LCA_Disclosure_Data_FY2025_Q2.xlsx (DOL OFLC LCA disclosure data)PublisherUS Department of Labor, Office of Foreign Labor CertificationSource typeUS Department of Labor filing dataHow we used this dataSource 54LCA_Disclosure_Data_FY2025_Q3.xlsx (DOL OFLC LCA disclosure data)PublisherUS Department of Labor, Office of Foreign Labor CertificationSource typeUS Department of Labor filing dataHow we used this dataSource 55LCA_Disclosure_Data_FY2025_Q4.xlsx (DOL OFLC LCA disclosure data)PublisherUS Department of Labor, Office of Foreign Labor CertificationSource typeUS Department of Labor filing dataHow we used this data That is offered base wage only, not total pay. The FDE salary guide compares Palantir with other employers.

Travel is part of the offer too. As of September 2026, the New York FDSE posting asks for travel of up to 25%, flexible based on personal preference, and the London NATO posting asks for travel throughout Europe 70 to 90% of the time. ^{[1, 20]}Source 1Forward Deployed Software Engineer (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 20Forward Deployed Software Engineer - NATO (London) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting Travel, location and on-site time shows how to ask what that means for your team.

Questions to ask your recruiter

Palantir says your format is personalized, so the recruiter’s answer beats any thread. ^[8]Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring page Each question below covers something the sources above leave open.

A prep plan by round type

Prepare each round type as a block, so the order stops mattering. Every question tagged Palantir is on one page. Everything in the table is free except the items marked Pro, which are in Pro; Pro starts with a 7-day free trial.

Your next seven days

A decomposition has no answer key, so practice it out loud rather than on paper. Here is a week built from this guide’s worked examples:

1. Day 1. Read your posting line by line with reading a job posting, then send your recruiter the checklist above.
2. Day 2. Run the interests app from this guide on a timer: scope it aloud, then write search and run it, without looking. Then try build a feature from data.
3. Day 3. The learning drill: say the shipments rule back, write the query, then do latest status per ticket and sessionize.
4. Day 4. Find and fix the paginator bug from memory, narrating each move, then do the testable refactor.
5. Day 5. Say your failure story and your “why Palantir” answer out loud, and write your changed-your-mind answer for the application with a decision you reversed.
6. Day 6. Run the free building permits case at /try as a live decomposition: sign in, work it against a simulated customer who reveals only what you ask about, then read your scorecard.
7. Day 7. Rerun your weakest round from the week, and write down the one thing you’d say differently.

If you want more, Pro adds edge cases first, debug unfamiliar code, learn a new library fast, can you get a clearance? and a user changed your mind, each with a model answer, plus the lessons on dataset-first prompts and product-sense prompts. It starts with a 7-day free trial.

Practice for Palantir

What this guide recommends. The Pro tag marks what is in Pro; a Pro question’s framework is still free, and its model answer is in Pro.

• QuestionTell me about a time a user or customer showed you something that changed your mind about a technical approach.Pro
• LessonDataset-first prompts and the short screenPro
• QuestionTell me about a failure that was your fault. What did it cost, and what do you do differently now?
• LessonAlgorithm screens: the problems reported at Google, Palantir and C3 AIPro

16 more recommended 11 questions and 5 lessonsShowHide

Questions

• What is the most technically ambitious thing you took on outside your comfort zone, and how did it go?Pro
• Tell me about a time you got a group that did not report to you to hit a date.Pro
• Why forward deployed engineering, and not a software engineering role?
• This team supports government customers. Do you hold or can you obtain a clearance, and how do you feel about that work?Pro
• Model a small inventory system with classes in about a page of code. Then add a new requirement I give you.Pro
• Here is the documentation for a library you have never used. Use it to implement a small feature in the time we have.Pro
• Here is a short piece of unfamiliar code with one bug that customers hit. Find and fix it, and explain how you found it.Pro
• Before you write code for this parser, list the inputs that will break it.Pro
• State the time and space complexity of your solution and say when it would matter in production.Pro
• A city transit agency says its buses are unreliable and riders are leaving. You have a week with their team. How do you approach it?
• Here is a table of events from a fitness app. Pick one feature to build from it and scope it to something you could ship in two weeks.

Lessons

• Re-engineering and debugging rounds: someone else’s code, then a featurePro
• Learning rounds: a new library or concept, taught on the spotPro
• Object-oriented and multi-part problems: build it, extend it, scale itPro
• Product-sense prompts: users, flows, data and one metricPro
• Public-sector and defense loops: clearance, mission and compliancePro

Every question tagged Palantir

Posts about Palantir

Each takes one part of this guide further.

1. Company loops

   Palantir FDSE interview experiences: what Palantir publishes and what candidates report

   Palantir says its interview format is personalized. Its published outline beside dated FDSE candidate reports, and the round types to prepare for.

   11 min readPublished September 2026

2. Interview rounds

   Palantir’s learning interview: how to learn a new concept on the spot, out loud

   In Palantir’s learning interview you are taught something new, then use it in code. What Palantir publishes, what candidates report, and how to practice.

   11 min readPublished September 2026

3. Interview rounds

   Palantir’s re-engineering interview: read unfamiliar code, fix the bug, be ready to extend it

   Palantir’s re-engineering interview puts you in code you have never seen. What Palantir publishes, what candidates report, and a routine to practice.

   11 min readPublished September 2026

4. Interview rounds

   Palantir decomposition interview example: a full walkthrough of a reported prompt

   A full walkthrough of a Palantir decomposition prompt one candidate reported, built on London taxi data, with what to say out loud at each step.

   11 min readPublished September 2026

5. Interview rounds

   The Palantir insider trading interview question: how to answer it without knowing finance

   Palantir’s former FDE recruiting lead used insider trading as an example case. Learn the domain out loud, find the data, and ship a first version.

   11 min readPublished September 2026

See all 13 posts 8 more about PalantirShowHide

1. Company loops

   Palantir Build to Apply: how to build and film the demo Palantir asks for

   Palantir’s Build to Apply postings want a Foundry and AIP project and a short demo video. Who can apply, how to get set up, and how to build and film it.

   11 min readPublished September 2026

2. Company loops

   Palantir FDSE internship interview: every published step, what interns report, and how to prep

   What Palantir publishes about its FDSE internship interview, what intern candidates report about the learning and decomposition rounds, and how to prepare.

   11 min readPublished September 2026

3. The FDE role

   Deployment strategist vs forward deployed engineer: the business-side twin of the FDE

   Deployment strategist vs forward deployed engineer: how Palantir, Databricks and others split the work, which to apply for, and how the interviews differ.

   11 min readPublished September 2026

4. The FDE role

   FDE jobs that need a security clearance: who asks, which level, and what it changes

   Which FDE postings ask for a security clearance, from Secret to TS/SCI with polygraph, the citizenship rules, and how to answer the clearance question.

   11 min readPublished September 2026

5. Interview rounds

   Clarifying questions for a decomposition interview: what to ask first and what to skip

   Which clarifying questions to ask first in a decomposition interview, which to skip, and the sentence that ends clarifying and starts the build.

   10 min readPublished September 2026

6. Interview rounds

   Decomposition interview mistakes that sink strong engineers, and how to recover mid-round

   The mistakes that sink strong engineers in the decomposition round, from designing a platform to silent assumptions, and the line that recovers each.

   10 min readPublished September 2026

7. Interview rounds

   How to answer open-ended technical interview questions without rambling

   A time-boxed structure for open-ended technical interview questions, with the exact transition sentences and a worked example, so you stop rambling.

   11 min readPublished September 2026

8. What the evidence says

   Is there a decomposition interview rubric? What employers describe and what no one publishes

   No employer publishes a decomposition interview rubric. What Palantir describes, what prep sites say interviewers score, and a checklist to use instead.

   11 min readPublished September 2026

Questions people ask

What rounds do candidates report in a Palantir FDSE interview?

Palantir publishes the outline: one or two phone interviews, then an onsite that can be in person or virtual, built around engineering competencies such as open-ended questions and working inside existing systems. Candidates have described coding, decomposition, learning and re-engineering rounds and a hiring manager conversation, in different combinations. Palantir says the format is personalized to you and the role, so ask your recruiter which round types you will get.^{[8, 11, 12]}Source 8Getting Hired - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring pageSource 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 12Palantir Interview Process... So Far, FDSE 2024 (post by u/kircher32245)PublisherReddit r/csMajorsSource typecandidate report on Reddit

What is the Palantir decomposition interview, and what have candidates reported?

An open-ended problem you break down into a first version you could build. Palantir’s guide says to state the alternatives and trade-offs, reach a concrete approach and deliver a functioning idea first. Candidates have reported prompts built on sample data, such as London taxi records, or on an app that connects people by shared interests.^{[24, 33, 34, 35, 36]}Source 24Palantir FDSE Interview (rejected but idk why) (post by u/Master_el)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 33Palantir FDSE Interview Experience (REJECTION~) (post by u/bosslee21)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 34Navigating Open-Ended Questions - Palantir CareersPublisherPalantir TechnologiesSource typecompany hiring pageSource 35Palantir Learning & Decomposition Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 36Update: interview experience - Palantir new grad FDSE interview (Blind)PublisherBlindSource typecandidate report on Blind

What is the Palantir learning interview, and what have candidates reported?

A round in which you are taught something new, such as a concept, a codebase, or a database schema and its documentation, and then use it. Palantir’s early-talent timeline lists learning and decomposition as its onsite interviews. Candidates on Blind have described being introduced to a new concept or codebase and then working through tasks that change code, and one candidate reported, in December 2025, being given a database schema and documentation and asked to implement functions from it.^{[9, 11, 35, 38]}Source 9Students | Palantir Careers (timeline image: RecruitingTimeline_V3.jpg)PublisherPalantirSource typecompany hiring pageSource 11Palantir FDSE Full Interview Loop Process (post by u/Not_the_Sauron)PublisherReddit r/csMajorsSource typecandidate report on RedditSource 35Palantir Learning & Decomposition Interview (Blind)PublisherBlindSource typecandidate report on BlindSource 38Palantir learning interview (Blind)PublisherBlindSource typecandidate report on Blind

Does Palantir allow AI tools in interviews, and what do prep sites say?

Palantir publishes no rule on AI in live interviews. The only published Palantir rule on applicant AI use we found is for the Build to Apply track, where LLMs and AI tools are permitted and encouraged while you build your project. One prep site says AI use in Palantir interviews is strictly prohibited, but cites no Palantir source. Ask your recruiter, and assume no AI help in a live round unless you are told otherwise.^{[22, 75]}Source 22Deployment Strategist, Build to Apply - US Government (San Diego, CA) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 75Palantir's Interview Process & QuestionsPublisherinterviewing.ioSource typeinterview prep site

How much does a Palantir FDSE earn?

As of September 2026, the New York FDSE posting states a base salary range of $135,000 to $200,000 a year, and says total compensation may also include RSUs, a sign-on bonus and other incentives. The New York Deployment Strategist posting states a base salary range of $110,000 to $170,000 a year.^{[1, 4]}Source 1Forward Deployed Software Engineer (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 4Deployment Strategist (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting

Do I need a security clearance to be a Palantir FDSE?

Only for some roles. The Washington, D.C. US Government FDSE posting asks for an active clearance at or above Top Secret, or the willingness to obtain one, and the Intel posting requires an active Full Scope Poly clearance. Read the posting for your role before the recruiter call.^{[2, 19]}Source 2Forward Deployed Software Engineer - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 19Forward Deployed Software Engineer - Intel (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting

What is the difference between an FDSE and a Deployment Strategist at Palantir?

Palantir’s careers page places FDSEs, called Deltas, in Business Development with a mandate to achieve technical and operational outcomes for customers. Its Deployment Strategist posting says strategists go onsite with customer analysts and work with Forward Deployed Engineers to integrate data into a pipeline, and asks for experience with programming, scripting or statistical packages.^{[4, 16]}Source 4Deployment Strategist (New York, NY) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job postingSource 16Palantir Careers | Students and Early TalentPublisherPalantir TechnologiesSource typecompany hiring page

What is Palantir Build to Apply?

A Deployment Strategist, US Government track where you apply by building a Foundry and AIP project and submitting a demo video. Palantir says it can mean expedited consideration, and that LLMs and AI tools are permitted and encouraged while you build.^[5]Source 5Deployment Strategist, Build to Apply - US Government (Washington, D.C.) - Palantir on LeverPublisherPalantir Technologies (Lever)Source typecompany job posting

Why can’t I find a pass rate for Palantir’s decomposition round?

No source publishes one. Palantir publishes no pass rate or weight for any round, and candidates see only their own loop. A figure quoted for either has no employer source behind it, so prepare the round rather than the odds.

How long does the Palantir FDSE process take?

Palantir publishes no timeline for the whole process. Candidate posts describe gaps between rounds that differ from loop to loop, so ask your recruiter for the dates of your own loop and plan your preparation around them.

Keep reading

Guides

• The forward deployed engineer interview, round by round
• The decomposition interview: how to break down a vague customer problem
• Forward deployed engineer salary: what employers post and file
• Forward deployed engineer vs software engineer

Other companies

• Databricks forward deployed engineer interview
• Google forward deployed engineer interview
• OpenAI forward deployed engineer interview
• All company guides