Software Engineer, Engine Productivity

As a Software Engineer on the Engine Productivity team, you will build and maintain the test infrastructure that keeps Roblox's engine code healthy — code-coverage reporting, cross-platform unit-test harnesses (including PS4/5), the ReferenceClient, and the buck2 test system. This work is becoming mission-critical: as AI-assisted development dramatically increases the volume of code being generated, fast and trustworthy test signal is what keeps engine quality high.

• 1–3 years of experience building software systems (internships or industry experience)
• Strong coding fundamentals in C/C++ (with Python or a similar language for tooling, diagnostics, and data pipelines)
• Genuine interest in debugging and program internals — curiosity about what the code actually does beyond the authored source (build output, generated code, harness and runtime behavior)
• Conceptual familiarity with build configurations (i.e., maintaining different configs for different purposes and understanding why they diverge)
• Strong data sense — the ability to tell whether a data aggregation is well constructed and whether it answers the right question
• A track record of driving cross-org / cross-team initiatives to completion
• Own and evolve the code-coverage reporting pipeline, keeping both full and patch-level coverage signal fast and trustworthy
• Build out additional diagnostics and reporting pipelines that surface the health of engine tests
• Keep the unit-test harness healthy across platforms, including PS4/5
• Maintain the ReferenceClient and help extend it into new integration-test scenarios
• Ship improvements to the buck2 test system
• Partner with senior and staff engineers to strengthen C++ unit testing — a growing priority as AI-assisted development produces more code that must be verified quickly and reliably

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