We're looking for a QA Engineer to join White Circle, an AI Safety company building the safety, reliability, and optimization layer for AI systems through natural-language policies it automatically tests, enforces, and improves at scale. Backed by $70M (Series A) from top funds and senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, and others, White Circle processes 100M+ API calls monthly and trains its own LLMs. This is a manual-first product QA role, with automation as a key tool, in a small team where work ships to production fast.
You will
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Manually test new features and fixes across the web platform and APIs in fast release cycles, sometimes as short as one working day.
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Identify the highest-risk areas, run exploratory, smoke, regression, and integration testing, and give clear release feedback.
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Write concise test plans and checklists, investigate unexpected behavior, and file reproducible bug reports.
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Work with engineers and product owners to clarify requirements and improve testability before development is complete.
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Automate stable, business-critical flows with Playwright and Python, and integrate them into CI/CD.
Requirements
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2+ years in QA automation, including building frameworks from scratch.
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Strong Playwright experience for E2E UI testing and scalable test suite design.
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Clean Python automation code (pytest, fixtures, parametrize).
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Hands-on CI/CD integration (GitHub Actions, GitLab CI, or similar).
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Practical use of AI coding agents and LLM-powered developer tools in testing workflows.
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Fluent English and clear communication.
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Based in or relocating to Paris or London (hybrid).
Bonus
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Testing AI/LLM products: non-deterministic outputs, confidence scoring, edge-case prompts.
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Performance or load testing (k6, Locust).
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API testing tools (Postman, Insomnia, Yaak) or contract testing.
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Security-aware QA or SOC 2 environments.
We offer
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Competitive salary + equity.
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Hybrid work from Paris or London, relocation package for Paris.
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Top-tier medical insurance in France and flexible time off.
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L&D budget, all hardware and tools you need, plus covered AI agent and IDE subscriptions.
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Team off-sites twice a year.
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