ashby
Software Engineer - Testing Frameworks
Baseten
San Francisco, USA
Full-time
Mid
Hybrid
Discovered 1 weeks ago
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RESPONSIBILITIES
- 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.
REQUIREMENTS
- Strong proficiency in Go and/or Python, with hands-on experience building test tooling and libraries used by other engineers.
- 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.
- Experience designing integration test infrastructure for distributed systems, including ephemeral environment provisioning and dependency management.
- 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.
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