Mozilla
Contract Staff Software Engineer - Performance Graphics (C++,Rust, WebGL)
Be an Early Applicant
Maintain and improve Firefox Graphics code covering rendering, compositing, images, canvas, and WebGL. Diagnose and fix cross-platform graphics issues, resolve bugs and regressions, maintain tests, review code, and manage incoming issues. The role requires strong C++ or Rust skills, graphics framework and GPU architecture knowledge, multithreaded debugging and optimization ability, and independent technical leadership in a mature codebase.
The role
You will take on the ongoing maintenance and engineering work in Firefox’s Graphics area (rendering, compositing, images, canvas, WebGL). You help keep the graphics code healthy.
Responsibilities- Own day-to-day Graphics maintenance: bug fixes, regressions, test upkeep, incoming issues.
- Diagnose and fix graphics problems across platforms (Windows, macOS, Linux, Android).
- Carry code review and routine upkeep so the FTE engineers can focus on performance.
A healthy Graphics area, backlog and regressions kept down, with the team’s senior engineers freed to focus on performance.
Required qualifications- Strong C++ and/or Rust.
- Knowledge of graphics frameworks and GPU architecture.
- Strong debugging and optimization in a multithreaded codebase.
- Able to work independently and lead technically in a large, mature codebase.
- Shader languages; mobile/Android; open-source collaboration.
Hiring Ranges:
Canada Tier 1 Locations
$145,800—$186,172 CAD
Canada Tier 2 Locations
$131,400—$154,600 CAD
Similar Jobs
Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
Provides aerospace quality assurance and QMS oversight for C-17 maintenance operations. Performs maintenance and records audits, failure and forensic analysis, root cause analysis, compliance reporting, and quality checks against technical orders and regulations. Trains personnel on QMS and SMS, addresses audit findings, promotes safety and first-time quality, and advises management on compliance risks. The role is fully onsite in Trenton, Ontario, with up to 10% travel.
Top Skills:
As9100Automated Data Aircraft Management (Adam)Electronic Record Keeping System (Erks)ExcelMicrosoft OutlookMicrosoft PowerpointMicrosoft WordQuality Management System (Qms)Safety Management System (Sms)
Cloud • Fintech • Information Technology • Machine Learning • Software
Build and maintain front-end features for small-business products using HTML, CSS, modern JavaScript, and React. Integrate interfaces with REST APIs, write tests, debug code using logs and dashboards, participate in code reviews and pair programming, and contribute to reliable, accessible, high-quality software. The role also involves exploring AI tools to improve engineering efficiency and collaborating across teams in a flexible hybrid environment.
Top Skills:
CSSCypressGitHTMLJavaScriptJestReactRest ApisTypescript
Cloud • Fintech • Information Technology • Machine Learning • Software
Develop reliable C# and .NET software, build desktop interfaces with WPF and XAML, work with SQL databases, test features, debug code, monitor system health, participate in code reviews, and collaborate with senior engineers through pair programming and continuous improvement.
Top Skills:
.Net FrameworkC#GitSQLWpfXaml
What you need to know about the Chicago Tech Scene
With vibrant neighborhoods, great food and more affordable housing than either coast, Chicago might be the most liveable major tech hub. It is the birthplace of modern commodities and futures trading, a national hub for logistics and commerce, and home to the American Medical Association and the American Bar Association. This diverse blend of industry influences has helped Chicago emerge as a major player in verticals like fintech, biotechnology, legal tech, e-commerce and logistics technology. It’s also a major hiring center for tech companies on both coasts.
Key Facts About Chicago Tech
- Number of Tech Workers: 245,800; 5.2% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: McDonald’s, John Deere, Boeing, Morningstar
- Key Industries: Artificial intelligence, biotechnology, fintech, software, logistics technology
- Funding Landscape: $2.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Pritzker Group Venture Capital, Arch Venture Partners, MATH Venture Partners, Jump Capital, Hyde Park Venture Partners
- Research Centers and Universities: Northwestern University, University of Chicago, University of Illinois Urbana-Champaign, Illinois Institute of Technology, Argonne National Laboratory, Fermi National Accelerator Laboratory


