Senior Software Engineer (FastAPI & AI)

TL;DR

Senior Software Engineer (FastAPI & AI): Building and enhancing AI features for an e-commerce visual solution with an accent on async Python, high-performance private APIs, and service integration. Focus on scaling FastAPI services, optimizing bottlenecks using Datadog, and delivering high-quality image and video generation pipelines.

Location: Must be based in Europe (remote with monthly visits to Paris) or based in Paris. Relocation support available to France.

Salary: 100k – 110k EUR + Stock-Options/BSPCE

Company

Leading visual solution for e-commerce, processing over 5 billion images annually for millions of users worldwide.

What you will do

• Implement and improve AI features such as Logo maker and AI image/video generation within the app.
• Design and architect new features by chaining internal and external services to generate high-quality visuals.
• Monitor and scale FastAPI services, using Datadog to identify and resolve performance bottlenecks.
• Implement smart caching of pipeline steps to optimize system speed and reliability.
• Collaborate with the AI Tools squad to deliver end-to-end product improvements.

Requirements

• Strong practical expertise with FastAPI or similar async Python HTTP frameworks.
• Deep understanding of asyncio, including identifying blocking calls and protecting the event loop.
• Experience designing and updating internal REST APIs operating at scale.
• Proficiency in integration testing for large Python projects and wiring multiple external APIs.
• Must be based in or relocating to Europe.
• Visa sponsorship is available only for individuals based in or relocating to France.

Nice to have

• Experience working with AI APIs in production.
• Past experience working in a fast-paced startup environment.

Culture & Benefits

• Remote-friendly environment with flexible working hours.
• Biannual company retreats and monthly team gatherings.
• Relocation support up to 10k€, including apartment search and visa assistance for France.
• Extended parental leave and a commitment to diversity and inclusion.

Hiring process

• Screening call with the Talent Manager.
• Technical interview with the Hiring Manager.
• Home technical assignment (under 3 hours, potentially compensated) and team review.
• Culture fit interviews and reference checks.