James Mathies
Senior Software Engineering Manager at Mozilla
Saint Petersburg, Florida, United States
Summary
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SeniorJames Mathies is a Senior Software Engineering Manager with nearly three decades in the software industry and 17 years of focused engineering leadership at Mozilla, currently managing a 14-engineer graphics team driving a Rust-based re-architecture to boost visual quality and performance. He progressed from senior engineer and tech lead on major platform projects like Electrolysis and Metro Firefox into multiple management roles spanning graphics, security hardening, install/update, WebExtensions, and payments. Known for scaling teams and mentoring junior managers, he pairs hands-on systems and platform experience with cross-functional collaboration across product and business development. Based in Saint Petersburg, Florida, he brings a pragmatic balance of shipping complex engineering work and increasing organizational visibility and roadmap clarity. An understated strength is his track record of guiding long-running back-end re-architectures to production while maintaining delivery cadence.
18 years of coding experience
16 years of employment as a software developer
Github Skills (38)
webbrowser10
mojolicious10
pdf-reader10
mozilla-firefox10
browser10
perl10
gecko10
inbound10
tracks10
firefox10
git-mirror10
mercurial10
bit10
mozilla10
bugzilla9
Programming languages (5)
Github contributions (5)
mozilla/needinfodashboard
Dec 2022 - Jun 2026
need info management interface for mozilla buzilla users
Contributions:1 review, 9 PRs, 71 pushes in 3 years 6 months
bugzillamozillaproductivity
jmathies/util-process-top-crashes
Mar 2021 - Apr 2022
crash ping telemetry processing and page generation for mozilla utility processes
Contributions:2 reviews, 27 commits, 1 PR in 1 year 1 month
telemetry
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