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 age