Build Engineer - Bazel - #4770
About The Position
GRAIL is seeking a Build Engineer to join our DevOps / Platform Engineering organization. Our team builds and operates the infrastructure, tooling, and developer platforms that engineering and research teams rely on to move quickly and safely, from local development environments through builds, tests, CI/CD, and release. In this role, you will focus on developer experience: reducing friction in day-to-day engineering workflows and making complex, multi-language systems easier to build, test, and maintain. You will own and improve build-system workflows in our Bazel-based monorepo, raise CI reliability and performance, and build internal tooling and self-service automation used across engineering and research. This is a high-leverage role with broad visibility, your work directly accelerates teams working on early cancer detection.
Requirements
- 4+ years of experience working on build systems, CI/CD, or developer productivity / platform tooling.
- 2+ years of hands-on experience with a large-scale build system (for example Bazel, Buck, Pants, Gradle, or CMake).
- 2+ years of experience building and maintaining CI/CD pipelines in GitLab CI, GitHub Actions, Jenkins, or a comparable system.
- 3+ years of professional coding experience in one or more of Go, Python, TypeScript, or Java.
- 1+ years of hands-on experience with AWS and containerized workloads on Kubernetes.
- BS in Computer Science or a related technical field, or equivalent experience.
Nice To Haves
- Production Bazel experience, especially in a large, multi-language monorepo.
- Experience with Bazel rules and toolchains, remote caching, remote execution, test sharding, or build performance optimization.
- Experience with dependency management, hermetic and reproducible builds, and test infrastructure at scale.
- Experience improving developer experience in a mixed-language engineering environment (Go, Python, TypeScript, Java).
- Experience building internal CLIs, automation, release tooling, or self-service developer platforms.
- Experience defining and using developer-productivity metrics to prioritize work and demonstrate impact.
- Experience diagnosing and reducing CI flakiness, build nondeterminism, and long-tail pipeline failures.
- Experience supporting scientific, research, or data-intensive teams, including Python packaging and container image workflows.
- Strong debugging skills across complex, multi-team build, test, and pipeline failures.
- Clear communication and collaboration skills, with a track record of working directly with developers, researchers, and platform engineers.
- Comfortable using modern AI coding agents as part of day-to-day engineering work while applying sound engineering judgment.
- Experience mentoring engineers or driving adoption of tooling and standards across teams.
Responsibilities
- Focus on developer experience: reducing friction in day-to-day engineering workflows and making complex, multi-language systems easier to build, test, and maintain.
- Own and improve build-system workflows in our Bazel-based monorepo.
- Raise CI reliability and performance.
- Build internal tooling and self-service automation used across engineering and research.
Benefits
- flexible time-off or vacation
- a 401(k) retirement plan with employer match
- medical, dental, and vision coverage
- carefully selected mindfulness programs
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
High school or GED
