Senior Full-stack Engineer

🕒 March 18

🏢🏡 Paris – Hybrid

💵 €95k - €125k / year

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

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Logo of Ontologize

Ontologize

WebsiteLinkedIn

1 - 10 employees

Founded 2023

📚 Education

🤝 B2B

🏢 Enterprise

Education • B2B • Enterprise

Ontologize is a training and enablement company that helps organizations unlock the full value of Palantir Foundry and AIP through live instructor-led courses and on-demand learning resources. Staffed by former Palantir engineers, Ontologize offers private and group hands-on sessions, a forthcoming learning portal with tutorials and guides, and enterprise-focused training engagements for large organizations and government clients.

📋 Description

• Take ambiguous problems, decompose them, and deliver working software with minimal hand-holding. • Build and maintain strongly typed APIs and well-modeled data systems. • Work across the stack: Python backend, Next.js frontend, PostgreSQL, and our deployment infrastructure. • Use AI tools daily to accelerate development, learn the codebase, and ship faster. • Engage directly with end users and stakeholders to understand what actually needs to be built. • Contribute to our DevOps practices and bring ideas for better tools and processes.

🎯 Requirements

• Strong experience in a backend language (e.g. Python, Java, Go, etc.). • Strong data modeling and API design skills. • Competency with SQL — you can verify state in a production database and unblock yourself. • Familiarity with hexagonal/ports-and-adapters architecture, or demonstrated ability to adopt architectural patterns quickly. • Familiarity with modern frontend development. React/Next.js, performance optimization (useMemo, useCallback), error boundaries, and thoughtful component design. • Curiosity about DevOps. You don't need to be an expert, but you should want to understand how your code runs in production. • Required English level: C1 minimum (CEFR) – must be comfortable participating in technical discussions and writing documentation in English.

🏖️ Benefits

• 25 days of paid vacation per year + applicable public holidays. • Additional RTT days where applicable based on work schedule and agreements. • Generous company discretionary days to support work-life balance. • 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. • 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. • Support aligned with French statutory parental leaves and additional company-level family support programs where applicable (e.g. bereavement leave).

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