Senior Python Engineer (FastAPI / Python)

Overview

Job Description

Responsibilities

• - Design, build, and evolve our public API product
• - Ship features used by both self-serve developers and large enterprise customers
• - Ensure the API remains reliable, scalable, and easy to integrate
• - Own the API surface end-to-end: from design decisions to implementation, performance, and long-term maintainability
• - Iterate quickly based on real usage using data and user feedback
• - Work at the intersection of backend engineering and AI
• - Collaborate closely with product, machine learning, backend, and sales teams

Required Skills

• - Strong experience building backend systems in Python
• - Comfortable with FastAPI (or similar frameworks)
• - Experience with async patterns, concurrency, and production debugging
• - Owned or significantly contributed to the design of public-facing APIs
• - Care deeply about reliability, performance, and developer experience
• - Pragmatic and product-minded
• - Comfortable making decisions while collaborating closely with cross-functional teams
• - Experience in high-performing teams, ideally in fast-paced or startup environments
• - Clear communication skills

Benefits

• - Work from anywhere in Europe, with monthly trips to Paris (fully reimbursed)
• - Relocation support available (up to €10k)
• - Help with visa and housing
• - Company retreats, offsites, and regular team events
• - International team, English-speaking environment, with optional language lessons
• - Potential for higher salary for outstanding profiles and adjustments for cost of living