Job Description

Responsibilities

• Own and evolve Bazel- and Yocto-based build and test workflows in a polyrepo environment.
• Design and maintain Starlark rules, macros, toolchains, and build integrations.
• Improve Buildkite CI queue time, build time, cache hit rates, retry behavior, reliability, and flaky-test isolation.
• Develop affected-target detection, dependency analysis, test selection, caching, batching, and scheduling systems to reduce unnecessary CI work.
• Unify local and CI workflows to improve build reproducibility and failure debugging.
• Operate build infrastructure across Docker/OCI images, Kubernetes runners, cloud resources, and remote cache and execution systems.
• Instrument build and CI systems with metrics, logs, traces, dashboards, and analytics.
• Partner with internal users to onboard projects, resolve difficult build issues, and remove systemic bottlenecks.
• Apply AI tools to CI failure analysis, flaky-test debugging, pull-request triage, automated remediation, and developer-facing information.
• Own the reliability of production systems and participate in an on-call rotation for critical developer and factory infrastructure.

Requirements

• At least 5 years of engineering experience, including significant experience building infrastructure and tooling for developers.
• Hands-on experience with Bazel, Buck, Gradle, or similar build systems, including hermetic builds, dependency graphs, caching, sandboxing, and remote execution.
• Experience building CI systems at scale where build time, queue time, test flakiness, and developer trust affect engineering velocity.
• Ability to own production software in environments with strong SLA requirements.
• Ability to debug distributed build and CI failures across source control, dependency management, containers, runners, remote caches, test frameworks, and service infrastructure.
• Experience operating in a polyrepo environment with source code from multiple parties is a strong-fit qualification.
• Interest in applying AI to developer infrastructure while maintaining quality, reliability, and safety is a strong-fit qualification.

Benefits

• Hybrid work model requiring four days per week in the San Francisco office.
• Relocation assistance is offered to new employees.
• Participation in an on-call rotation is part of the role.

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