Senior Staff Software Engineer, Browser – New Products

🕒 il y a 22 jours

🇺🇸 États-Unis – Télétravail

💵 $166 000 - $260 000 / an

⏰ Temps Plein

🟠 Senior

🧑‍💻 Développeur Full-Stack

🗣️🇺🇸🇬🇧 Anglais requis

D'où vient cette offre

Publiée sur la page carrières de Mozilla, pas via un site d'emploi

Repérée par Remote Rocketship il y a 22 jours

Toujours ouverte sur le site de Mozilla. Vérifiée il y a 1 heure.

Logo of Mozilla

Mozilla

501 - 1000 employés

Fondée en 1998

👥 B2C

🔒 Cybersecurity

B2C • Cybersecurity • Software

Mozilla est une organisation à but non lucratif dédiée à la promotion d’un internet ouvert et accessible. Elle est à l’origine du navigateur Firefox, très populaire, qui met l’accent sur la confidentialité des utilisateurs, la rapidité et le contrôle. Mozilla propose également une gamme de produits axés sur la sécurité et la confidentialité en ligne, notamment Mozilla VPN, Firefox Relay et Mozilla Monitor. L’organisation participe aussi à des projets open source, à l’innovation en IA et à la défense des droits numériques. Mozilla vise à donner aux utilisateurs les moyens d’agir grâce à des technologies fiables et à des politiques qui protègent la vie privée, soutiennent le développement d’une IA open source et favorisent la responsabilisation des entreprises technologiques.

Description

• Design and implement experiments within browser engine subsystems • Investigate how internal data structures and execution behavior affect performance, correctness, and developer-tool interfaces • Evaluate ways to represent and expose browser state efficiently and accurately • Identify tradeoffs involving information loss, implementation complexity, and compatibility with dynamic web content • Prototype engine capabilities supporting reliable programmatic interaction with web content • Investigate how document structure, layout, navigation, and event handling affect correctness and performance • Instrument browser behavior and evaluate changes against repeatable tasks • Measure performance and correctness, isolate each change's effect, and document successful and unsuccessful experiments • Validate that gains hold beyond prototype-development workloads • Profile overhead introduced by new capabilities and pursue measurement-backed improvements • Use AI tools to accelerate coding and analysis, verifying output through debugging, tests, and measurement • Work closely with the team's technical lead as a hands-on individual contributor

🎯 Exigences

• Deep hands-on expertise in at least one browser engine subsystem, such as DOM and Web APIs, layout and rendering, accessibility, JavaScript runtimes, or networking and process architecture • Strong proficiency in C++ or Rust • Experience navigating a large systems codebase • Practical knowledge of memory ownership, concurrency, object lifetimes, and performance debugging • Ability to build JavaScript and scripting tools to exercise and measure work • Ability to investigate unfamiliar code, form precise hypotheses, construct useful prototypes, and interpret results • Strong understanding of web platform behavior and compatibility • Experience with profiling, tracing, regression tests, or conformance tests • Curiosity about AI agents and willingness to work directly with agent harnesses and coding tools • Contributions to Gecko, Servo, Blink, WebKit, or another browser engine are nice to have • Experience maintaining an open-source project is nice to have • Technical leadership in a small team building a new product is nice to have • Experience with accessibility infrastructure, browser security, profiling, or automated evaluation of agent workflows is nice to have

🏖️ Avantages

• Generous performance-based bonus plans for all eligible employees • Rich medical, dental, and vision coverage • Generous retirement contributions with 100% immediate vesting • Quarterly all-company wellness days • Country-specific holidays plus a birthday day off • One-time home office stipend • Annual professional development budget • Quarterly well-being stipend • Considerable paid parental leave • Employee referral bonus program • Life/AD&D, disability, EAP, and other benefits varying by country

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