Senior Engineering Manager, Mozilla

• 15+ years of overall industry experience, with at least 10 years of engineering leadership experience in software product, hosted services, SaaS, cloud-based applications, communications platforms, or similarly complex technical environments
• 5+ years of people management experience in an engineering environment, including coaching, feedback, prioritization, performance support, career development, and team development
• Experience managing senior technical teams, team budget and resource planning, and partnerships with directors, senior ICs, product stakeholders, infrastructure/SRE teams, contractors, external partners, and cross-functional stakeholders
• Experience translating technical, product, or organizational direction into clear execution plans, ownership models, delivery practices, operating rhythms, and measurable outcomes
• Technical depth sufficient to understand engineering tradeoffs, release risks, codebase quality, architectural implications, service reliability, security/privacy considerations, operational readiness, and engineering practices such as code review, testing, documentation, observability, CI/CD, incident learning, and technical debt management
• Strong communication and relationship-building skills, with the ability to create clarity, accountability, and follow-through in small, scaling, ambiguous, or evolving environments
• Demonstrated ability to thoughtfully evaluate and integrate AI-enabled tools into engineering management practices, team workflows, decision-making, and productivity improvements, while setting clear expectations around accuracy, privacy, security, and responsible use

Desirable

• Thunderbird is growing beyond our free desktop and mobile applications, and we’re looking for a Senior Manager, Web Applications to lead day-to-day engineering execution and people management for the team responsible for MZLA’s hosted subscription products
• This is a critical product and revenue area for MZLA
• The Senior Manager will help the team launch, maintain, and improve hosted services with strong delivery discipline, clear ownership, reliable engineering practices, and a continued focus on quality, privacy, reliability, and user trust
• This is a small, growing team, and the right person will be a hands-on technical manager who wants to stay close to the codebase, product direction, service reliability needs, release readiness, and engineering tradeoffs while also leading people and improving how the team operates
• As the Web Applications team continues to mature, this role will require an engaged manager who can help create structure, solve problems, support execution, and build stronger systems around the work
• Lead day-to-day engineering execution in a hands-on management capacity, ensuring priorities, ownership, timelines, risks, dependencies, and quality expectations are clear
• Manage Web Services engineers and contractors, including coaching, feedback, prioritization, performance support, and team development
• Manage team budget and resource planning, including contractor, vendor, tooling, service, operational expense, and headcount planning inputs
• Translate product direction, technical priorities, and organizational needs into coordinated engineering plans
• Establish team processes, workflows, planning practices, and operating rhythms that improve clarity, accountability, quality, and predictability
• Maintain enough product and architectural context to evaluate tradeoffs, identify risks, and manage engineering work credibly
• Improve engineering practices related to code review, testing, documentation, release readiness, observability, technical debt, and operational readiness
• Coordinate launch and operational readiness across technical and cross-functional partners
• Communicate progress, priorities, risks, and decisions clearly to stakeholders while fostering an engineering culture grounded in accountability, inclusion, technical quality, open-source values, and continuous improvement
• What success looks like:
• Within the first year, success means the Web Applications team is operating with clear ownership, strong delivery predictability, and effective coordination across employees, contractors, contributors, and cross-functional partners
• Planning, reviews, launches, and ongoing operations should be disciplined and reliable, supported by engineering practices that help the hosted subscription portfolio mature with quality, privacy, reliability, and user trust
• You’ll work with our passionate staff and open-source community members from all over the globe to support the mission and objectives of MZLA
• This is a remote, full-time position. Strong communication and documentation skills are essential for effective collaboration across time zones and disciplines