Requirements

• Experience in software engineering and Bazel-focused build systems in system software
• Deep knowledge of Bazel:
  • Authoring rules
  • Apple platforms
  • Toolchains (native + custom, especially newer rules based toolchain configuration)
  • Transitions
  • Configuration + Constraints
  • Remote Execution APIs
• Strong understanding of Apple development ecosystems: Xcode, Swift toolchains, SDKs, mach-o formats, and universal binaries.
• Extensive experience with hermetic builds, sandboxing, deterministic builds, and debugging action-cache behavior.
• Solid foundation in C/C++, Swift, or Objective-C.
• Comfortable with Python and Bash for tooling.
• Experience with Jenkins or similar CI infrastructure.

Nice to Haves

• Migrated complex Apple codebases to and from Xcodebuild and Bazel.
• Experience with Swift toolchain hermeticity and balancing it with compilation speed or custom Clang/Swift wrapper actions.
• Experience optimizing monorepos with hundreds/thousands of targets.
• Hands-on experience with distributed caching, remote test execution, and execution platform modeling.
• Contributions to Bazel, rules_apple, rules_swift, rules_cc, or RBE-related open-source projects.

What You'll Be Doing

• Design, evolve, and maintain a Bazel based build for system-level software spanning many generations of targets.
• Own Starlark rules, custom providers, toolchain definitions, platform constraints, transitions, and configuration layering.
• Build hermetic, deterministic toolchains for macOS/iOS/watchOS/tvOS, including Clang-based C/C++/Obj-C and Swift toolchains.
• Diagnose and eliminate sources of nondeterminism: Xcode environment leakage, SDK drift, tool version skew.
• Integrate and tune remote execution systems, specifically BuildBarn. Past experience with other tools in the space like EngFlow, BuildBuddy etc will come in handy.
• Build and maintain hermetic Apple platform toolchains including SDK extraction and version pinning, Clang/Swift invocation under Bazel.
• Build IDE integrations, instrument build graph performance, and author tools to visualize dependency edges, configuration transitions, and remote execution behavior.
• Maintain Jenkins pipelines for multi-platform build, test, packaging, and artifact promotion.
• Define reproducible build and release processes across macOS, iOS, and other Apple platforms.
• Transform test results, code coverage results, static analysis results into information that helps developers focus their efforts.

Perks and Benefits

Could include perks and benefits here.