Braintrust · 2 days ago
Open Source Engineer - Python
United States
Full-time
Remote
Mid LevelBraintrust is an AI observability platform that connects evaluation and observability in one workflow. They are seeking engineers to build open-source libraries that enable customers to observe and optimize AI operations in production applications.
Artificial Intelligence (AI)Data IntegrationData Management
Responsibilities
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
Qualification
Required
Deep expertise in Python and understand what it takes to build fast, idiomatic, and reliable libraries in that ecosystem
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
Experience maintaining or contributing to production-grade open-source libraries, ideally used across multiple environments
Preferred
You've contributed to popular open source projects
Led SDK adoption at your organization
Familiar with tracing and observability tools like OpenTelemetry
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
Company
Braintrust
Braintrust offers an AI stack to simplify the process from evaluations to data management, ensuring seamless integration into any business.
Founded in 2023
11-50 employees
H1B Sponsorship
Braintrust has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
Funding
Current Stage
Early StageTotal Funding
$41.1MKey Investors
Andreessen HorowitzGreylock
2024-10-08Series A· $36M
2023-12-13Seed· $5.1M
Leadership Team
Ankur Goyal
Founder & CEO
Recent News
Greylock
2025-12-01
Seattle TechFlash
2025-09-16
Company data provided by crunchbase