Dataiku interview, decoded.

The four steps come from Dataiku's own job ads. The detail on each comes from candidate accounts on Reddit in 2026, and the take-home from Dataiku's public repository.

The take-home says plainly what Dataiku looks for, and candidates' rejections show how strictly it reads the spec.

• Production-quality code you would be proud of
• Following the specification exactly, including file paths and edge cases
• A complete product: backend, front end and CLI all working
• Honesty about tools: naming the AI you used and why
• Clear explanations of your design in the interviews that follow

The technical themes come from the Millennium Falcon specification and candidate accounts. The behavioural questions are built on what the process asks of you.

The Millennium Falcon challenge is Dataiku's public developer test. The Falcon has an autonomy in days of fuel, each jump uses fuel equal to its travel time, refuelling takes a day, and bounty hunters on a planet on a given day give a 10% chance of capture each time you land or refuel there. You compute the best odds of reaching Endor before the countdown ends, show them in a web page and print them from a CLI. Candidates who were rejected in 2026 say the grading is strict, so the details below matter.

• Resolve the database path correctly: The spec says routes_db can be absolute or relative to the location of millennium-falcon.json itself, not to where you run the program. One candidate was rejected after about ten hours of work for not handling relative paths from the terminal. Test the CLI from another directory.
• Model waiting and refuelling as moves: Search over states of planet, day and fuel left. Waiting a day and refuelling are both moves, and the hint says waiting on a safe planet can avoid the hunters. Refuelling where hunters are present counts as a capture attempt.
• Get the probability right: Each capture attempt adds to the risk as 1/10, then 9/100, then 81/1000. Count attempts along the path and maximise the chance of success. Check your answers against the four examples: 0%, 81%, 90% and 100%.
• Treat the front end as graded work: The page must upload the Empire's JSON and show the odds as a percentage. One backend candidate was marked down for a minimal front end, so make it clean and usable even if backend is your specialty.
• Say which AI you used: Dataiku says using AI is a good thing, and asks you to state which tool helped and why. Add a short section to your README, and make sure you can explain every part in the interviews.

Scope your time before you start. Candidates report ten to fifteen hours or more; write down what you would add with more time, and ask the recruiter about the deadline.

Levels.fyi gives a median of €75.2K a year for Dataiku software engineers in France from 28 submissions, and a median package of €86.2K for an L3 engineer in Paris with four years of experience, including stock (read on 26 September 2026). Dataiku's French ads carry no pay range. Calibrd benchmarks the offer against your level and location in the report.

1. Read the Millennium Falcon spec twice before writing code, and list every rule: fuel, refuelling, waiting, hunters, countdown, paths.
2. Run the four examples as tests and get 0%, 81%, 90% and 100% before you build the front end.
3. Run the CLI from a different directory to check relative database paths.
4. Give the front end real care, even for a backend role.
5. Write a README with how to run it, your design choices, what you would add, and which AI tool you used and why.
6. Plan for ten to fifteen hours, and ask the recruiter about the deadline.
7. Prepare to defend your design for two hours with the VPs of engineering.
8. Keep other processes going. Candidates describe a long process and rejections late in it.

This guide covers Dataiku's software engineering hiring. The steps come from Dataiku's job ads, the take-home from its public repository, and the experience of it from candidate accounts on Reddit in 2026. For management and leadership roles the loop is similar but the bar shifts to people, delivery and strategy, so pair it with the leadership interview prep hub. The bar for your exact role comes from the role-by-role guides, and the prep that actually transfers is spoken, so run a mock interview before the real one.

• 01Dataiku, Millennium Falcon challengethe developer technical test: autonomy and refuelling, bounty hunters and the capture formula, the backend, front end and CLI, the relative routes_db path, the four examples, production-quality code and the rule on AI (created 2020, updated September 2025)
• 02Dataiku, Fullstack Software Engineer, Corethe four steps (45-minute recruiting call, 90-minute team lead call, home test or live coding, two hours with the VPs of engineering), Java, Python and Angular, and remote in five countries (updated September 2026)
• 03Dataiku, companymore than 1,200 employees, $350 million ARR and 750+ customers
• 04Reddit r/developpeurs, the Dataiku take-homea rejection over relative paths after about ten hours, a backend candidate marked down on the front end, a very long process, a late rejection, and interviewers unsure what they wanted (June 2026)
• 05Reddit, a Dataiku interviewcoding and CV follow-ups with the team lead, a demanding 15+ hour take-home, then two technical rounds of 90 minutes with VPs (January 2026)
• 06Levels.fyi, Dataiku software engineer pay in Francethe €75.2K median from 28 submissions and the €86.2K L3 package in Paris (26 September 2026)

Interview processes change. This reflects widely-reported and sourced conditions as of 2026 — confirm specifics with your recruiter, and treat it as a map rather than a guarantee.