Software Engineer (Testing Frameworks)

• Baseten is seeking talented and experienced Software Engineers to join our Platform team within the Infrastructure organization
• As a senior member of Baseten’s Platform Team, you will own the systems that let every engineer at Baseten prove their code works before it reaches production. Our product runs mission-critical AI inference for customers who measure downtime in dollars per second, which means our internal bar for correctness, performance, and failure tolerance has to be exceptional
• Your focus is the full testing stack: fast and reliable unit test tooling, integration harnesses that spin up realistic environments on demand, load and performance testing for GPU-backed inference workloads, and resilience testing that deliberately breaks things so our customers never have to find out what happens when a node dies mid-request
• This is a builder role with org-wide leverage. You won’t be writing tests for other teams — you’ll be building the frameworks, harnesses, and feedback loops that make writing good tests the path of least resistance, and you’ll set the standards for what “well-tested” means at Baseten
• Own Baseten’s testing strategy end to end — define the standards, the tiers, and the tooling that engineering teams build against
• Build and maintain unit, integration, load and performance testing frameworks
• Design end to end test infrastructure that provisions realistic dependencies on demand — ephemeral Kubernetes namespaces, containerized service dependencies, etc
• Build resilience and chaos testing capabilities: fault injection, network partition and latency simulation, pod and node failure scenarios, dependency degradation, and automated verification that our systems degrade gracefully and recover
• Attack test suite reliability head-on — flake detection and quarantine, test impact analysis and selective execution, parallelization, and aggressive reduction of end-to-end CI wall time
• Build observability into the testing layer itself: coverage reporting, test health dashboards, failure triage tooling, and clear signals about which areas of the codebase are under-tested
• Create project templates and shared libraries so new services start with a complete testing setup on day one
• Partner directly with product and infrastructure teams — embed where needed, understand their hardest testing problems, and turn one-off solutions into platform capabilities
• Mentor engineers across the org on testing practice and raise the collective bar through code review, documentation, and internal advocacy

Benefits

• Remote-first work environment. The Baseten team is welcome to work from wherever they want; fully remote, in our San Francisco office, or a mix of both. Today, our team (including our founding team) is spread across the United States, Canada, and Armenia. We provide a $1,000 stipend for you to make your home-office comfortable and productive
• Regular in-person team summits. We get together as a team three times a year to plan, workshop, and most importantly, get to know each other better
• Unlimited PTO. We ask that everyone take at least 4 weeks of vacation. And we have a company-wide break between Christmas and New Year’s Day
• Full healthcare coverage. Medical, dental and vision insurance for you and your family
• Paid parental leave. 16-weeks fully paid parental leave (adoptive and non-birth parents included) and flexibility with schedules while returning to work
• Company-sponsored 401(k) for you to contribute to
• Learning and development budget. We encourage you to take classes, attend conferences, and invest in your craft and we’ll cover expenses to make it happen- Practical experience with load and performance testing tools (k6, Locust, Vegeta, JMeter, Gatling, or similar) and the judgment to interpret results and drive action from them
• Strong proficiency in Go and/or Python, with hands-on experience building test tooling and libraries used by other engineers
• Experience designing integration test infrastructure for distributed systems, including ephemeral environment provisioning and dependency management
• Deep experience with testing frameworks and their internals — pytest, Go’s testing package, testify, testcontainers, or equivalents — including the ability to extend them, not just use them
• Solid Kubernetes and Docker fundamentals — you can build test infrastructure that runs on and tests against real cluster environments
• A track record of measurably improving testing culture on an engineering team — you have opinions on what to test, what not to test, and where the ROI actually is
• Advanced understanding of CI/CD, including how to keep large test suites fast, deterministic, and trustworthy at scale
• Are excited about building foundational infrastructure and are comfortable working independently on ambiguous, high-impact technical challenges