Open Source Engineer - Go

What You’ll Do

• Build elegant, idiomatic, and resilient SDKs that power Braintrust’s LLM evaluation and AI observability platform.
• Ensure our libraries are easy to use, efficient to run, and a delight to work with, prioritizing developer experience and performance.
• Integrate with major AI providers, frameworks, and platforms our customers rely on, such as OpenAI, Anthropic, and Gemini.
• Build tools and automation to improve testing, profiling and simplify release workflows.
• Collaborate closely with backend, platform, and product teams to ensure a cohesive and polished developer experience.
• Be a great community ambassador: talk with our users, understand their issues, help them get their fixes merged and have deep empathy for our users.

You Might Be a Fit If You:

• Are customer-obsessed and passionate about solving real-world problems for developers.
• Have deep expertise in Go and understand what it takes to build fast, idiomatic, and reliable libraries in that ecosystem.
• Are proficient with the tooling needed to build robust SDKs, such as testing frameworks, profilers, CI/CD pipelines, and packaging systems.
• Care deeply about developer experience, from clean APIs and clear docs to thoughtful error handling and backward compatibility.
• Know how to wrap, patch, or extend existing frameworks and SDKs to inject observability and control without breaking developer workflows.
• Have experience maintaining or contributing to production-grade open-source libraries, ideally used across multiple environments.

Bonus: You’ve contributed to popular open source projects, led SDK adoption at your organization, are familiar with tracing and observability tools like OpenTelemetry, or worked on tools in the LLM/AI ecosystem.

Benefits

• Medical, dental, and vision insurance
• Daily lunch, snacks, and beverages
• Flexible time off
• Competitive salary and equity
• AI Stipend