Braintrust
Software Engineer, SDK
Remote +2 · Full-time · Posted Oct 8, 2026
- Location
- Remote
New York City
Seattle
About the job
Build and maintain open-source SDKs that support Braintrust’s LLM evaluation and AI observability platform, from design through release and community support.
What you'll do
- Build performant, reliable SDKs and integrate them with AI providers, frameworks, and platforms.
- Develop tools and automation for testing, profiling, and release workflows; collaborate with backend, platform, and product teams.
- Support SDK users and open-source communities by understanding issues and helping deliver fixes.
What they ask for
- Deep expertise in JavaScript, Python, or Go and ability to build idiomatic, reliable libraries.
- Proficiency with SDK tooling, including testing frameworks, profilers, CI/CD pipelines, and packaging systems.
- Experience maintaining or contributing to production-grade open-source libraries.
- Ability to extend or adapt existing frameworks and SDKs to add observability without disrupting developer workflows.
Nice to have
- Contributions to popular open-source projects or experience leading SDK adoption.
- Familiarity with OpenTelemetry, tracing and observability tools, or the LLM/AI ecosystem.
Tools
JavaScript, Python, Go, OpenAI, Anthropic, Gemini, OpenTelemetry
AI focus
Build SDKs for LLM evaluation and AI observability, integrating with AI providers and frameworks.
Model-written summary · the original posting is authoritative