Staff Software Engineer, Browser – New Products

🕒 2 dias atrás

🇨🇦 Canadá – Remoto

💵 $130.000 - $170.000 / ano

⏰ Tempo Integral

🔴 Especialista

🧑‍💻 Engenheiro Full-stack

🗣️🇺🇸🇬🇧 Inglês obrigatório

De onde vem esta vaga

Publicada na página de carreiras da Mozilla ↗página de carreiras da Mozilla, não em um site de vagas

Vista pela primeira vez pelo Remote Rocketship 2 dias atrás

Ainda aberta no site da Mozilla. Verificada 13 minutos atrás.

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Logo of Mozilla

Mozilla

501 - 1000 funcionários

Fundada em 1998

👥 B2C

🔒 Cibersegurança

B2C • Cybersecurity • Software

A Mozilla é uma organização sem fins lucrativos dedicada a promover uma internet aberta e acessível. Eles são os criadores do popular navegador Firefox, que enfatiza a privacidade do usuário, velocidade e controle. A Mozilla também oferece uma gama de produtos que focam na segurança e privacidade na internet, incluindo o Mozilla VPN, Firefox Relay e Mozilla Monitor. Além disso, a organização está envolvida em projetos de código aberto, inovação em IA e defesa dos direitos digitais. A Mozilla visa capacitar os usuários com tecnologia e políticas confiáveis que protejam a privacidade, apoiem o desenvolvimento de IA de código aberto e promovam a responsabilidade das empresas de tecnologia.

Descrição

• 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 unsuccessful and successful experiments • Verify that gains generalize 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 • Own engine-level investigations and implementation while collaborating closely with the team’s technical lead

🎯 Requisitos

• 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 needed to exercise and measure work • Ability to investigate unfamiliar code, form precise hypotheses, construct useful prototypes, and interpret results • Ability to separate implementation effects from variability in websites, workloads, or model behavior • Strong understanding of web platform behavior and compatibility, including document structure, script execution, rendering, and user interaction • Experience with profiling, tracing, regression tests, or conformance tests • Ability to ground performance claims in reproducible evidence • Curiosity about AI agents and willingness to work directly with agent harnesses and coding tools • Nice to have: Contributions to Gecko, Servo, Blink, WebKit, or another browser engine • Nice to have: Experience maintaining an open-source project • Nice to have: Technical leadership in a small team building a new product • Nice to have: Experience with accessibility infrastructure, browser security, profiling, or automated evaluation of agent workflows

🏖️ Benefícios

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team • Rich medical, dental, and vision coverage • Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute) • Quarterly all-company wellness days where everyone takes a pause together • Country specific holidays plus a day off for your birthday • One-time home office stipend • Annual professional development budget • Quarterly well-being stipend • Considerable paid parental leave • Employee referral bonus program • Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

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