Open Source Engineer - Go

About the Company

Braintrust is the AI observability platform. By connecting evals and observability in one workflow, Braintrust gives builders the visibility to understand how AI behaves in production and the tools to improve it.

Responsibilities

• Build elegant, idiomatic, and resilient SDKs that power Braintrust’s LLM evaluation and AI observability platform
• Ensure libraries are easy to use, efficient to run, and prioritize developer experience and performance
• Integrate with major AI providers and frameworks such as OpenAI, Anthropic, and Gemini
• Build tools and automation to improve testing, profiling, and release workflows
• Collaborate with backend, platform, and product teams to ensure a cohesive developer experience
• Act as a community ambassador by engaging with users and supporting open-source contributions

Requirements

• Deep expertise in Go
• Proficiency with SDK tooling including testing frameworks, profilers, CI/CD, and packaging systems
• Experience maintaining or contributing to production-grade open-source libraries
• Strong focus on developer experience, clean APIs, and documentation
• Ability to wrap, patch, or extend existing frameworks to inject observability

Preferred Qualifications

• Contributions to popular open source projects
• Experience with OpenTelemetry or other tracing and observability tools
• Experience working within the LLM/AI ecosystem