QA Engineer

We're looking for a QA Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production. This is a manual-first product QA role, with automation as a key tool. You will - Manually test new features and fixes across the web platform and APIs in fast release cycles, sometimes as short as one working day. - Identify the highest-risk areas, run exploratory, smoke, regression, and integration testing, and give clear release feedback. - Write concise test plans and checklists, investigate unexpected behavior, and file reproducible bug reports. - Work with engineers and product owners to clarify requirements and improve testability before development is complete. - Automate stable, business-critical flows with Playwright and Python, and integrate them into CI/CD. Requirements - 2+ years in QA automation, including building frameworks from scratch. - Strong Playwright experience for E2E UI testing and scalable test suite design. - Clean Python automation code (pytest, fixtures, parametrize). - Hands-on CI/CD integration (GitHub Actions, GitLab CI, or similar). - Practical use of AI coding agents and LLM-powered developer tools in testing workflows. - Fluent English and clear communication. - Based in or relocating to Paris or London (hybrid). Bonus - Testing AI/LLM products: non-deterministic outputs, confidence scoring, edge-case prompts. - Performance or load testing (k6, Locust). - API testing tools (Postman, Insomnia, Yaak) or contract testing. - Security-aware QA or SOC 2 environments. We offer - Competitive salary + equity. - Hybrid work from Paris or London, relocation package for Paris. - Top-tier medical insurance in France and flexible time off. - L&D budget, all hardware and tools you need, plus covered AI agent and IDE subscriptions. - Team off-sites twice a year. Find Jobs in France on Arbeitnow