You will help the Firefox WebGPU team clear its backlog of correctness and security bugs in wgpu, Firefox’s WebGPU implementation, so WebGPU can ship on Linux and Android. You will take on well-defined, prioritized issues, land fixes upstream in the open-source wgpu project and in Gecko, and free the core team to focus on the remaining release-blocking work.
Responsibilities- Fix prioritized correctness and validation bugs from the wgpu "WebGPU for Firefox" project (the “Current”, “CTS Burndown”, “Linux release” and “Android release” columns), plus security and fuzzer-reported bugs.
- Diagnose and fix application blockers, real apps and demos that do not yet work in Firefox Nightly (the webgpu-apps meta-bug).
- Work through WebGPU conformance test suite (CTS) failures.
- Write and pass tests, work through code review with wgpu maintainers and Gecko module owners, and land upstream.
- Coordinate with the Firefox WebGPU team on task selection and priority.
- wgpu "WebGPU for Firefox" GitHub project
- webgpu-apps meta-bug (Bugzilla) blockers
- WebGPU conformance test suite (CTS) expected-failure lists
- Specific issue lists to be provided by the WebGPU team
Reviewed fixes landed upstream in wgpu and in Gecko, with tests, measurably reducing the P2/P3 backlog, app blockers, and CTS failures, contributing to WebGPU riding the trains on Linux and Android.
Required qualifications- Strong Rust.
- Experience in a large systems or graphics codebase, and the ability to ramp on wgpu quickly.
- Comfort working upstream in an open-source project (public issues and code review).
- Solid debugging skills (validation bugs, corner cases, fuzz findings).
- Prior contributions to wgpu (the team can onboard an existing wgpu contributor fastest).
- WebGPU / graphics / GPU experience. Modern graphics APIs: Vulkan, DirectX/D3D 11/12, Metal. Shader languages: WGSL, HLSL, MSL, SPIR-V.
- Low-level Android graphics experience
- Security or fuzzing experience. Web security model.
Skills Required
- Strong Rust programming skills
- Experience working in a large systems or graphics codebase
- Ability to quickly ramp up on wgpu
- Comfort contributing upstream to an open-source project, including public issues and code review
- Solid debugging skills for validation bugs, corner cases, and fuzzing findings
- Prior contributions to wgpu
- WebGPU, graphics, or GPU experience
- Experience with Vulkan, DirectX/D3D 11/12, or Metal
- Experience with WGSL, HLSL, MSL, or SPIR-V
- Low-level Android graphics experience
- Security or fuzzing experience and knowledge of the web security model
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The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Mozilla and has not been reviewed or approved by Mozilla.
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Healthcare Strength — Health coverage is fully employer‑paid in the U.S. and Canada, with generous coverage noted in most other countries. Mental‑health care access, including therapy and coaching, is emphasized.
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Parental & Family Support — Paid parental leave is described as substantial for both childbearing and non‑childbearing parents in the U.S. and Canada. Family‑friendly policies extend to dependent healthcare coverage.
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Strong & Reliable Incentives — Performance‑based bonus plans are offered to all regular employees, with individual targets and quarterly opportunities. This cash‑oriented model provides predictable, company‑wide incentive structures.
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What We Do
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.
