Founding Engineer developing frontend architecture for a tech startup. Working closely with co - founders to shape product usability and experience.
About the role
- Product Engineer (Frontend) at AI Safety company White Circle. Building safety, reliability, and optimization layers for AI systems through modern frontend technologies.
Responsibilities
- Own and ship end-to-end product features across the full stack, from architecture and implementation to deployment and iteration.
- Design intuitive, high-quality user experiences, building seamless flows from onboarding to advanced analysis.
- Collaborate closely with founders, product, design, ML, and research to turn complex AI capabilities into accessible, reliable products.
- Drive the full development lifecycle and contribute to technical direction, product strategy, and engineering culture.
Requirements
- Know your way around TypeScript, React, Next.js, Tailwind.
- Have worked with LLMs (OpenAI API, function calling, context management — you get it).
- Can write non-trivial SQL without Googling “group by in window function explained.”
- Care about design, usability, and performance, not just “making it work.”
Benefits
- 20 days of paid vacation
- Work from Paris (hybrid) + relocation package
- Best medical insurance in France
- All the hardware, tools, and services you need
- Covered subscriptions for AI agents and IDEs
- Team off-sites twice a year: we’ve recently been to the Alps and to Saint-Tropez
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