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Software Engineer, SDK

Braintrust· Engineering
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Remote, New York City, SeattleFull-timePosted 3mo ago

About the role

We’re hiring engineers to build open-source libraries (SDKs) for observing, understanding, and optimizing how AI operates inside production applications. Own full SDK lifecycle: design, implementation, release, documentation, and community support to power evaluation and observability pipelines across environments, frameworks, and AI providers.

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 a delight to work with, prioritizing developer experience and performance.
  • Integrate with major AI providers, frameworks, and platforms 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.

Qualifications

  • Are customer-obsessed and passionate about solving real-world problems for developers.
  • Have deep expertise in either Javascript, Python, or Go, and understand how to build fast, idiomatic, and reliable libraries in that ecosystem.
  • Are proficient with tooling to build robust SDKs (testing frameworks, profilers, CI/CD pipelines, packaging systems).
  • Care deeply about developer experience (APIs, docs, error handling, backward compatibility).
  • Know how to wrap/patch/extend existing frameworks and SDKs to inject observability without breaking workflows.
  • Have experience maintaining or contributing to production-grade open-source libraries used across environments.
  • Bonus: contributed to popular open source projects, led SDK adoption, familiar with tracing/observability tools like OpenTelemetry, or worked on LLM/AI tools.

Skills

Required:JavaScriptPythonGoSDK tooling

Benefits

  • Medical, dental, and vision insurance
  • Daily lunch, snacks, and beverages
  • Flexible time off
  • Competitive salary and equity
  • Wifi & cellphone stipend
Last updated Oct 11, 2026. Interested? Apply on the company site.
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About Braintrust

Ship quality AI at scale

Braintrust is the AI observability platform for tracing production, running evals, and catching regressions before they reach users.

AI debuggingAI development platformAI evaluationAI evaluation frameworkAI monitoringAI observabilityAI performance testingAI testing
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