Posted Feb 28, 2026
Integrity: Above all else, value your integrity. Do not lie. Take responsibility for your mistakes. Respect: Respect yourself, your colleagues, and our customers. Earn the respect of those around you. Respect is hardest, and therefore most vital, in moments of conflict and disagreement. Initiative: Act without waiting to be told to do so. Seek to understand what the team must accomplish and take responsibility for contributing to the best of your ability. Production: Create a body of work. Writing, coding, recording, building, sketching — anything that gives form to your creativity. ### Location
Paris, France (3d/wk in-office)
We do once-annual company colocations in the US (usually three days + travel). The engineering team does an additional colocation, probably in Paris for the foreseeable future. ## What You'll Do
This is non-negotiable. You should be using AI tools (Claude Code, Cursor, Codex, Windsurf, Amp, Opencode, etc.) as a core part of how you write software, not as a novelty. We use AI to interrogate our codebase, scope work, draft code, and accelerate every phase of development. Our engineers get as many tokens as they need. ### Language
Required English level: C1 minimum (CEFR) – must be comfortable participating in technical discussions and writing documentation in English. ### How You Work
You ship. You hold high standards and move quickly. These aren't in tension for you. - You think about the "second muscle": not just writing code, but improving the process of building software. You notice friction and fix it. - You do low-regret work. You ask the right questions upfront: What are the landmines? Is someone already working on this? What would it take for this to get merged? - You thrive in ambiguity. We have some process, but not much. You're comfortable making progress without every detail nailed down. - You communicate well with engineers (collecting context, respecting existing opinions) and with end users (understanding their actual problems). ### Nice to Have
Experience with feature flags and A/B testing infrastructure
AWS experience
Familiarity with Shape Up
If you are familiar with Palantir’s software, that will neither help nor harm your application. But if you have deep expertise with Palantir’s software, especially with the APIs, that would be nice to have. ## What We're Not Looking For
Engineers who optimize for perfect over shipped. - People who need extensive process and can't function without complete clarity on every detail. - Developers who aren't using AI tools regularly in their workflow. - Engineers from codebases without quality standards who will resist our conventions. ## Compensation
Base salary of €95k - €125k depending on experience
Equity commensurate with a Series A start-up
Annual bonus — determined by a combination of company & individual performance
We provide comprehensive health coverage aligned with French norms:
Employer-paid complementaire santé (mutuelle) covering supplemental health costs (hospital, specialist, dental, optical), with 100% of the employee premium covered by Ontologize. - Inclusive prévoyance (disability/death) coverage through Rippling EOR. ### Retirement & Savings
You participate in France’s mandatory pension system via payroll contributions. - Ontologize offers access to optional company savings and retirement vehicles when available through Rippling. ###
Full reimbursement of public transport costs for commuting to work (above the mandatory 50% minimum). - Sustainable mobility allowance up to €900/year to support eco-friendly commuting (bikes, carpooling, scooter, etc.) fully exempt from social charges within legal limits. ### Family & Life Support
Support aligned with French statutory parental leaves and additional company-level family support programs where applicable (e.g. bereavement leave). ##
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