# Open Source Engineer - Go
**Company:** [Braintrust](https://hotfix.jobs/companies/braintrust)
**Location:** San Francisco, CA, Seattle, WA, New York, NY
**Skills:** Go, OpenAI, Anthropic, Gemini, OpenTelemetry, CI/CD, Testing Frameworks, Profilers, Sdk Development
**Posted:** 2025-07-28
> Build and maintain open-source Go SDKs for AI observability and LLM evaluation, integrating with providers like OpenAI and Anthropic. Focus on developer experience, performance, community support, and tools for testing and release workflows.
## Job Description
## 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
**Apply:** https://hotfix.jobs/jobs/open-source-engineer-go-at-braintrust-036d22bc-e20c-4409-b09c-cecde0c73999
**Canonical:** https://hotfix.jobs/jobs/open-source-engineer-go-at-braintrust-036d22bc-e20c-4409-b09c-cecde0c73999