Senior Python Engineer (Public API & FastAPI)

PhotoRoom SAS

Job Overview

Location

Paris | Remote

Job Type

Full-time

Full Job Description

📋 Description

• Design, build, and evolve Photoroom’s public API, the primary interface through which external developers access AI-powered image processing capabilities.
• Own the entire API lifecycle: from endpoint design (naming, versioning, structure) to implementation, performance optimization, scalability, and long-term maintainability.
• Ship features used by both self-serve developers and enterprise clients like Amazon, DoorDash, and Decathlon, ensuring reliability, consistency, and ease of integration.
• Work at the intersection of backend engineering and AI, abstracting complex computer vision models into simple, developer-friendly API endpoints.
• Iterate rapidly with weekly deployments, using real usage data and user feedback to prioritize features and improvements.
• Collaborate closely with product, machine learning, backend, and sales teams to align API functionality with business needs and customer outcomes.
• Ensure high availability, low latency, and robust error handling for an API processing over 5 billion images annually.
• Implement and maintain API security, rate limiting, authentication, and documentation standards for external developers.
• Improve developer experience by refining API responses, error messages, SDKs, and examples to reduce integration friction.
• Participate in code reviews, technical design discussions, and architectural decisions with a small, senior engineering team.
• Balance pragmatic, fast-paced delivery with long-term architectural integrity, avoiding over-engineering while ensuring scalability.
• Monitor API performance, usage patterns, and incidents using observability tools, and respond to production issues with urgency.
• Translate technical trade-offs and decisions into clear communication for non-technical stakeholders including product and sales teams.
• Contribute to the migration of the current API infrastructure, which includes transitioning from Node.js to Python-based systems.
• Maintain and enhance tooling around API testing, mocking, and deployment pipelines to support continuous delivery.
• Uphold code quality standards with testing, documentation, and CI/CD practices aligned with production-grade systems.

🎯 Requirements

• Strong experience building backend systems in Python with a focus on public-facing APIs (not internal services)
• Proven experience designing and maintaining public APIs, including versioning, consistency, and long-term evolution
• Proficiency with FastAPI or similar async Python frameworks, including concurrency, production debugging, and performance tuning
• Experience working in high-performing, fast-paced startup or scale-up environments
• Pragmatic, product-minded approach with emphasis on impact, speed, and developer experience
• Clear communication skills to translate technical decisions for cross-functional teams

🏖️ Benefits

• Remote work from France, Germany, Ireland, Italy, Portugal, Spain, or UK with monthly reimbursed Paris office visits
• 30 days annual leave plus local public holidays
• Competitive equity package with stock options (BSPCE)
• €1,000 one-time home office grant OR €400/month co-working space stipend (for remote employees outside Paris)
• €1,000 annual learning and development budget for courses, books, and training
• Private health insurance
• Relocation support up to €10,000 (for moves to France, including apartment finding and visa assistance)
• Access to personalized mental health support via MokaCare
• Sports and cultural activities reimbursement
• Regular team gatherings including in-person onboarding (1–2 weeks in Paris), yearly company offsite, quarterly retreats, and social events

Skills & Technologies

Python

JavaScript

Node.js

FastAPI

Backend

Senior

Remote

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PhotoRoom SAS

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About PhotoRoom SAS

PhotoRoom SAS provides AI-powered photo editing software that automatically removes backgrounds from images and generates professional-quality visuals for e-commerce sellers, marketers and creators. Founded in Paris in 2019, the company offers mobile and web applications that replace complex editing workflows with one-tap tools for background removal, object cutouts, studio lighting effects and batch processing. Its technology serves millions of users who need product photography for online marketplaces, social media content and marketing campaigns without requiring traditional photo editing skills or expensive equipment.

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