Founding Engineer

As a founding engineer you own some of the most critical systems in the company.

• Multiple platforms with 150K+ users collecting data: B2C, B2B, mobile app, internal.
• Anti-fraud and automated QA systems. You own the quality of what we deliver every day.
• Heavy backend, keeping architecture and ops efficient as we scale to 1M+ users.
• Payout systems moving daily high volumes of money across 100+ countries.
• Live production serving multiple top 5 AI companies, hard deadlines and specs.

Required

Completed a proper prépa (2-year preparatory class) AND a full 3-year engineering degree at Polytechnique, CentraleSupélec, Les Mines, ENS, or Paris-Saclay

French-speaking (mandatory)

Fully AI-native workflow: orchestrates multiple agents/tasks in parallel (3-4 windows)

Proactive communicator, not introverted — surfaces problems/ideas immediately

Hands-on agentic coding ability: modern agentic tools (Claude Code, Codex, GStack, Hermes-style agent frameworks) as core workflow