> Markdown version of [/jobs/ext/4629687-ai-evaluation-benchmark-engineer](https://www.wearedevelopers.com/jobs/ext/4629687-ai-evaluation-benchmark-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # AI Evaluation & Benchmark Engineer - **Company:** THAMES, FREDERICK - **Location:** San Francisco, CA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** AI Evaluation, Application Programming Interfaces (APIs), Unit Testing, Continuous Integration, Python (Programming Language), Next.js, Tailwind, Evaluation of Large Language Models - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25197_40ca17fd7a47693f7e0294596de63653 ## About the Role * 4+ years experience in Python, automated testing frameworks, and LLM evaluation tooling. * Strong knowledge of continuous integration (CI) and containerized execution. ## Description * Build automated sandbox runners that execute and verify generated code across 10,000+ unit test suites. * Create synthetic benchmark datasets for Next.js, Tailwind, and full-stack API generation. * Identify model failure modes and partner with research teams on dataset filtering and RL feedback.