Mozilla

Senior Machine Learning Engineer, Applied AI Modeling

Mozilla · Full Time · 4 days ago

Mozilla

🌎 United States 💵 $139K - $218K per year ⭐ 5-10 yrs exp 💼 Software Development

Develop and fine-tune large language models to create intelligent, privacy-aware browser experiences in Firefox. Collaborate with cross-functional teams to prototype and deploy Generative AI features using RAG and intent modeling.

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Sr Engineering Manager, Web Apps

Mozilla · Full Time · 4 days ago

Mozilla

🌎 United States 💵 $175K - $200K per year ⭐ 10+ yrs exp 💼 Others

Lead day-to-day engineering execution and people management for the team responsible for hosted subscription products. Establish team processes and improve engineering practices to ensure quality, privacy, and reliability of web applications.

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Sr Engineering Manager, Web Apps

Mozilla · Full Time · 4 days ago

Mozilla

🌎 Canada 💵 155K - 180K per year ⭐ 10+ yrs exp 💼 Others

Lead day-to-day engineering execution and people management for the team responsible for hosted subscription products. Establish team processes and improve engineering practices to ensure quality, privacy, and reliability of web applications.

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Senior Software Engineer, WebExtensions

Mozilla · Full Time · 4 days ago

Mozilla

🌎 Germany 💵 €68000 - €91000 per year ⭐ 5-10 yrs exp 💼 Software Development

Implement and maintain WebExtensions APIs and Addon Management while developing user interfaces within Firefox. Collaborate with cross-functional teams to debug extension issues and contribute to Mozilla-owned system add-ons.

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Senior Software Engineer, WebExtensions

Mozilla · Full Time · 4 days ago

Mozilla

🌎 Canada 💵 95000 - 139K per year ⭐ 5-10 yrs exp 💼 Software Development

Implement and maintain WebExtensions APIs and Addon Management while developing user interfaces within Firefox. Collaborate with cross-functional teams to debug extension issues and contribute to Mozilla-owned system add-ons.

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Senior Software Engineer, WebExtensions

Mozilla · Full Time · 4 days ago

Mozilla

🌎 France 💵 €53000 - €71000 per year ⭐ 5-10 yrs exp 💼 Software Development

Implement and maintain WebExtensions APIs and addon management while developing user interfaces within Firefox. Collaborate with cross-functional teams to debug extension issues and contribute to open-source workflows.

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Senior Software Engineer, WebExtensions

Mozilla · Full Time · 4 days ago

Mozilla

🌎 United Kingdom 💵 £66000 - £87000 per year ⭐ 5-10 yrs exp 💼 Software Development

Implement and maintain WebExtensions APIs and addon management while developing user interfaces within Firefox. Collaborate with cross-functional teams to debug extension issues and contribute to open-source workflows.

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Sr Engineering Manager, Web Apps

Mozilla · Full Time · 4 days ago

Mozilla

🌎 Canada, United States 💵 $175K - $200K per year ⭐ 10+ yrs exp 💼 Others

Lead day-to-day engineering execution and people management for the team responsible for hosted subscription products. Establish team processes and improve engineering practices to ensure quality, privacy, and reliability of web applications.

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Public Policy & Government Relations Manager

Mozilla · Full Time · 6 days ago

Mozilla

🌎 United Kingdom 💵 £66000 - £87000 per year ⭐ 5-10 yrs exp 💼 Others

Lead end-to-end public policy campaigns in the UK focusing on privacy, competition, and AI to raise Mozilla's profile. Engage with policymakers and regulators to advocate for frameworks that support the open web and responsible innovation.

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Public Policy & Government Relations Manager

Mozilla · Full Time · 6 days ago

Mozilla

🌎 United Kingdom ⭐ 5-10 yrs exp 💼 Others

Lead the development and execution of public policy campaigns in the UK focusing on privacy, competition, and AI. Engage with government stakeholders and regulators to advocate for the open web and Mozilla's product initiatives.

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Senior Strategic Account Executive, Firefox Enterprise (France)

Mozilla · Full Time · 12 days ago

Mozilla

🌎 France 💵 €58000 - €78000 per year ⭐ 5-10 yrs exp 💼 Sales

Build and manage the sales pipeline for Firefox Enterprise across France and Belgium, targeting large enterprises and public sector accounts. Own the full sales cycle from prospecting and discovery to negotiation and closing commercial wins.

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Privacy Student Worker

Mozilla · Internship · 12 days ago

Mozilla

🌎 Germany ⭐ 0-2 yrs exp 💼 Others

The role involves automating and fixing web compatibility issues related to Firefox's Enhanced Tracking Protection and improving privacy-focused UI surfaces. The student worker will also prototype small-scale privacy projects and mitigate tracking and security issues.

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Senior Frontend Engineer

Mozilla · Full Time · 12 days ago

Mozilla

🌎 United States 💵 $116K - $183K per year ⭐ 5-10 yrs exp 💼 Software Development

Build high-quality, accessible user interfaces for the Firefox browser while collaborating with cross-functional teams. Mentor fellow engineers through code reviews and documentation to maintain high standards of code quality and performance.

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Senior Frontend Engineer

Mozilla · Full Time · 12 days ago

Mozilla

🌎 Canada 💵 95000 - 139K per year ⭐ 5-10 yrs exp 💼 Software Development

Build high-quality, accessible user interfaces for the Firefox browser while collaborating with cross-functional teams. Mentor fellow engineers through code reviews and documentation to maintain high standards of code quality and performance.

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Lead Privacy Counsel, Infrastructure & Data Governance

Mozilla · Full Time · 13 days ago

Mozilla

🌎 United States ⭐ 10+ yrs exp 💼 Software Development

Lead the development and maintenance of Mozilla's core privacy compliance infrastructure and scalable governance processes. Advise cross-functional teams on operational privacy risks, enterprise data governance, and incident response.

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Lead Privacy Counsel, Infrastructure & Data Governance

Mozilla · Full Time · 13 days ago

Mozilla

🌎 United States 💵 $166K - $260K per year ⭐ 10+ yrs exp 💼 Software Development

Lead the development and maintenance of Mozilla's core privacy compliance infrastructure and scalable governance processes. Advise cross-functional teams on operational privacy risks, enterprise data governance, and incident response.

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Staff Operations Engineer

Mozilla · Full Time · 13 days ago

Mozilla

🌎 Germany 💵 €81000 - €108K per year ⭐ 5-10 yrs exp 💼 Software Development

Lead the design, reliability, and evolution of hybrid-cloud and workplace infrastructure while setting technical direction across teams. Drive complex infrastructure projects, automate operational toil, and mentor engineers to improve system scalability and security.

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Staff Operations Engineer

Mozilla · Full Time · 13 days ago

Mozilla

🌎 United States 💵 $139K - $218K per year ⭐ 5-10 yrs exp 💼 Software Development

Lead the design, reliability, and evolution of hybrid-cloud and workplace infrastructure while setting technical direction for scalable systems. Collaborate across IT, SRE, and Security teams to drive complex migrations and reduce operational toil through automation.

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Staff Operations Engineer

Mozilla · Full Time · 13 days ago

Mozilla

🌎 Canada 💵 116K - 171K per year ⭐ 5-10 yrs exp 💼 Software Development

Lead the design, reliability, and evolution of hybrid-cloud and workplace infrastructure while setting technical direction for scalable systems. Collaborate across IT, SRE, and Security teams to implement automation and improve system dependability.

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Staff Operations Engineer

Mozilla · Full Time · 13 days ago

Mozilla

🌎 United States ⭐ 5-10 yrs exp 💼 Software Development

Lead the design, reliability, and evolution of hybrid-cloud and workplace infrastructure while setting technical direction across teams. Drive complex infrastructure projects, automate operational toil, and mentor engineers to improve system scalability and security.

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Senior Machine Learning Engineer, AI Platform

Mozilla · Full Time · 14 days ago

Mozilla

🌎 Canada 💵 116K - 171K per year ⭐ 5-10 yrs exp 💼 Software Development

Design and operate the core AI platform components for training, deploying, and serving machine learning models at scale. Optimize inference systems for throughput and latency while managing GPU-based workloads and observability practices.

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Senior Machine Learning Engineer, AI Platform

Mozilla · Full Time · 14 days ago

Mozilla

🌎 United States 💵 $139K - $218K per year ⭐ 5-10 yrs exp 💼 Software Development

Design and operate the core AI platform components for training, deploying, and serving machine learning models at scale. Optimize inference systems for throughput and latency while ensuring reliability and privacy across CPU and GPU workloads.

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Staff Solutions Engineer (France), Firefox Enterprise

Mozilla · Full Time · 14 days ago

Mozilla

🌎 France 💵 €65000 - €87000 per year ⭐ 5-10 yrs exp 💼 Software Development

Lead technical discovery and solution design to help enterprises deploy Firefox Enterprise in secure and regulated environments. Partner with sales to manage technical relationships and validate interoperability across security and infrastructure systems.

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Staff Solutions Engineer (France), Firefox Enterprise

Mozilla · Full Time · 14 days ago

Mozilla

🌎 France ⭐ 5-10 yrs exp 💼 Software Development

Lead technical discovery and solution design to help enterprises deploy Firefox Enterprise in secure and regulated environments. Partner with sales to manage technical relationships and validate interoperability across security and infrastructure systems.

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Senior Mixed Methods User Researcher

Mozilla · Full Time · 14 days ago

Mozilla

🌎 Canada 💵 95000 - 130K per year ⭐ 5-10 yrs exp 💼 Others

Lead mixed-method user research studies across mobile and privacy product spaces to drive product and design strategy. Partner cross-functionally to translate user insights into actionable recommendations and roadmaps while mentoring other researchers.

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Senior Software Engineer (Contract)

Mozilla · Full Time · 15 days ago

Mozilla

🌎 Germany ⭐ 5-10 yrs exp 💼 Software Development

Implement privacy-improving and anti-tracking features into the Firefox web browser to prevent unhealthy user tracking. Develop architectural improvements for the Gecko browser engine using C++, JavaScript, and Rust.

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Senior Site Reliability Engineer

Mozilla · Full Time · 15 days ago

Mozilla

🌎 United States 💵 $123K - $144K per year ⭐ 5-10 yrs exp 💼 Software Development

Establish and maintain the infrastructure and operational systems for Thunderbird, focusing on EKS-based Kubernetes and CI/CD pipelines. Diagnose production incidents, implement reliability improvements, and manage infrastructure as code across AWS accounts.

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Senior Site Reliability Engineer

Mozilla · Full Time · 15 days ago

Mozilla

🌎 Canada 💵 108K - 125K per year ⭐ 5-10 yrs exp 💼 Software Development

Establish and maintain infrastructure and operational systems, including EKS-based Kubernetes platforms and CI/CD pipelines. Diagnose production incidents, implement reliability improvements, and manage observability stacks across AWS accounts.

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Senior Site Reliability Engineer

Mozilla · Full Time · 15 days ago

Mozilla

🌎 United Kingdom 💵 £62000 - £72000 per year ⭐ 5-10 yrs exp 💼 Software Development

Establish and maintain infrastructure and operational systems, including EKS-based Kubernetes platforms and CI/CD pipelines. Diagnose production incidents, drive root-cause analysis, and implement observability and security improvements.

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Senior Site Reliability Engineer

Mozilla · Full Time · 15 days ago

Mozilla

🌎 Canada, United Kingdom, United States 💵 $123K - $144K per year ⭐ 5-10 yrs exp 💼 Software Development

Establish and maintain infrastructure and operational systems, including EKS-based Kubernetes platforms and CI/CD pipelines. Diagnose production incidents, drive root-cause analysis, and implement security-conscious infrastructure practices.

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Front End Engineering Manager, Firefox Desktop

Mozilla · Full Time · 22 days ago

Mozilla

🌎 Canada 💵 149K - 220K per year ⭐ 5-10 yrs exp 💼 Others

Lead a distributed team of engineers to improve the Firefox Desktop user interface through innovation and high-quality software delivery. Collaborate with cross-functional teams like Product, UX, and QA to align technical goals with user value.

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Senior Manager, Firefox Mobile Test Engineering

Mozilla · Full Time · 25 days ago

Mozilla

🌎 United Kingdom 💵 £134K - £178K per year ⭐ 10+ yrs exp 💼 Others

Set and own the overall quality strategy for Firefox Mobile, overseeing test automation, observability, and exploratory testing programs. Lead a distributed team of engineers and contractors while partnering with Product, UX, and Engineering leadership to drive product health.

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Senior Manager, Firefox Mobile Test Engineering

Mozilla · Full Time · 25 days ago

Mozilla

🌎 Germany 💵 €130K - €173K per year ⭐ 10+ yrs exp 💼 Others

Set and own the overall quality strategy for Firefox Mobile, overseeing test automation, observability, and exploratory testing programs. Manage a distributed team of engineers and contractors while partnering with Product, UX, and Engineering leadership to improve product health.

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Senior Manager, Firefox Mobile Test Engineering

Mozilla · Full Time · 25 days ago

Mozilla

🌎 Spain 💵 €126K - €168K per year ⭐ 10+ yrs exp 💼 Others

Set and own the overall quality strategy for Firefox Mobile, managing test automation and observability tooling. Lead the exploratory testing program and partner with Product, UX, and Engineering leadership to drive product health.

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Integrated Marketing Consultant - France

Mozilla · Part Time · a month ago

Mozilla

🌎 France ⭐ 10+ yrs exp 💼 Marketing

Develop and lead the 2026 integrated brand campaign for Firefox in France to drive user growth and cultural relevance. Collaborate with global and local teams to execute marketing initiatives across owned, earned, and paid channels.

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Integrated Marketing Manager - UK

Mozilla · Full Time · a month ago

Mozilla

🌎 United Kingdom ⭐ 10+ yrs exp 💼 Marketing

Lead the regional marketing strategy for the UK to drive user growth and re-establish Firefox as a relevant, differentiated brand. Collaborate cross-functionally to deliver integrated campaigns across product launches, partnerships, and cultural moments.

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Staff Solutions Engineer (DACH), Firefox Enterprise

Mozilla · Full Time · a month ago

Mozilla

🌎 Germany 💵 €81000 - €108K per year ⭐ 5-10 yrs exp 💼 Software Development

Partner with sales to lead technical discovery and design solutions for Firefox Enterprise across the DACH region. Manage technical relationships with customers to ensure successful evaluation, pilot, and deployment in complex regulated environments.

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Staff Solutions Engineer (DACH), Firefox Enterprise

Mozilla · Full Time · a month ago

Mozilla

🌎 Germany ⭐ 5-10 yrs exp 💼 Software Development

Lead technical discovery and solution design to help enterprises in the DACH region deploy Firefox Enterprise in secure, regulated environments. Partner with sales to manage technical relationships and validate interoperability across security and infrastructure systems.

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Senior Strategic Account Executive, Firefox Enterprise

Mozilla · Full Time · a month ago

Mozilla

🌎 Germany ⭐ 10+ yrs exp 💼 Sales

Build and manage the sales pipeline for Firefox Enterprise across the DACH region, targeting large enterprises and public sector accounts. Own the full sales cycle from prospecting and discovery to negotiation and closing commercial wins.

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Senior Strategic Account Executive, Firefox Enterprise

Mozilla · Full Time · a month ago

Mozilla

🌎 Germany 💵 €74000 - €99000 per year ⭐ 5-10 yrs exp 💼 Sales

Build and manage the sales pipeline for Firefox Enterprise across the DACH region, targeting large enterprises and public sector accounts. Own the full sales cycle from prospecting and qualification to negotiation and closing commercial wins.

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