Jobs at Mozilla

Build and ship full-stack features, integrations, and enterprise customizations for an open-source AI product. Work directly with technical partners and enterprise customers on deployments, pilots, troubleshooting, infrastructure, identity, integrations, and data access. Generalize customer needs into reusable product capabilities, maintain customizations, document deployment processes, and provide roadmap feedback. The role requires strong communication, independent execution, and experience supporting AI-enabled applications in enterprise environments.

Lead semi-monthly payroll processing for approximately 800 U.S. and Canadian employees. Ensure compliance with federal, state, provincial, and local tax regulations; resolve payroll issues; coordinate benefits deductions and external vendors; support year-end filings, audits, and reporting; improve payroll processes; and mentor a Payroll Administrator.

The Senior Financial Analyst will manage forecasting, monthly budget updates, variance analysis, close support, headcount tracking, vendor and cloud spend monitoring, and reporting for Mozilla’s Core Services organization. The role partners with Accounting, People, hiring managers, budget owners, and technical teams; maintains planning data in Pigment; explains financial drivers; and improves recurring finance processes through automation and AI-assisted workflows.

Lead semi-monthly U.S. and Canadian payroll for approximately 800 employees, ensuring accurate processing and compliance with federal, state, provincial, and local regulations. Resolve payroll issues, coordinate benefits deductions and vendors, manage year-end tax filings and audits, provide reporting and analysis, improve payroll processes, and mentor a Payroll Administrator.

Prepare Core Services forecasts, monthly budget updates, variance analyses, and close reconciliations. Maintain headcount, vendor, purchase order, cloud spend, and commitment tracking. Partner with Accounting, People, hiring managers, budget owners, and technical teams to resolve issues and explain financial drivers. Improve recurring finance processes through automation and AI while delivering accurate reporting under competing deadlines.

Monitor, investigate, and respond to global security incidents; lead incident response as an incident commander; develop security alerts, playbooks, automated actions, and escalation workflows; conduct threat hunting and threat intelligence research; improve detection, containment, and post-incident processes; collaborate with stakeholders; and participate in an on-call rotation.

Leads architecture and development of Thunderbird’s web-based Services products, including calendar and secure file storage offerings. Responsibilities include writing code, prototyping, selecting technologies, developing analytics and infrastructure, solving complex problems, guiding product direction, mentoring engineers, and improving scalability and sustainability. The role collaborates across engineering, product, design, QA, Mozilla, and open-source communities in a fully remote environment.

Lead architecture and technical direction for Thunderbird’s web-based Services products, including calendar and secure file storage offerings. Responsibilities include writing code, prototyping, making technology decisions, developing analytics and infrastructure, solving complex problems, mentoring engineers, collaborating across product and design teams, and improving system scalability and maintainability. The role also contributes to product growth, open-source collaboration, and data-informed decisions within a fully remote international team.

Architect, build, and own Mozilla’s Salesforce platform supporting enterprise sales and revenue operations. Responsibilities include designing data, security, sharing, and business-process models; developing with Salesforce Flow, Apex, SOQL, and Lightning Web Components; integrating Salesforce with NetSuite, BigQuery, and other systems; establishing CI/CD, testing, governance, and release practices; and creating secure MCP and AI-agent integrations. The role partners across Sales, Finance, Legal, Security, and IT while leading platform reliability, support, and long-term technical strategy.

Architect, build, and own Mozilla’s Salesforce platform for enterprise sales and revenue operations. Responsibilities include designing data, security, integrations, lead-to-cash workflows, release management, and operational practices; developing Apex, SOQL, Lightning Web Components, and declarative Salesforce capabilities; integrating NetSuite and BigQuery; and creating secure MCP and AI-assisted workflows. The role provides technical direction, partners across business and technology teams, and leads platform reliability, governance, support, and continuous improvement.

Build, own, deploy, and operate backend services and APIs powering Mozilla products. Responsibilities include backend development, cloud infrastructure collaboration, monitoring and alerting, production support, incident response, releases, security and privacy reviews, API design, code reviews, and mentoring. The role requires end-to-end service ownership, on-call participation, and maintaining reliable production systems.

Build and own backend services for Mozilla’s Ecosystem Services, including server-side logic, APIs, distributed systems, cloud infrastructure, monitoring, deployments, and production reliability. Participate in on-call support, incident response, releases, security and privacy reviews, code reviews, and cross-functional collaboration. Mentor junior engineers and drive improvements in quality, testing, and engineering processes.

Lead iOS development for Thunderbird: design and improve mobile architecture, optimize performance and security, debug and test across unit/integration/automation, review and document technical decisions, own projects end-to-end, and collaborate with product, UX, and open-source contributors to deliver a scalable, accessible, and maintainable iOS app.

Lead design and development of Thunderbird's iOS app, improving architecture, performance, reliability, security, and accessibility. Own projects end-to-end, debug and test at unit/integration/automated levels, review code, mentor contributors, and document technical decisions while collaborating with product, UX, and open-source community.

Manage strategic Firefox Enterprise accounts in France by building customer relationships, driving adoption, overseeing renewals and retention, identifying expansion opportunities, tracking account health, and coordinating internal teams to resolve issues and deliver customer success. The role requires fluent English and French, enterprise SaaS or platform account management experience, negotiation skills, and travel within France.

Lead the finance function across accounting, FP&A, tax, treasury, financial operations, reporting, controls, and revenue recognition. Manage and develop the finance team, oversee budgeting and forecasting, strengthen systems and workflows, support international and partner-led operations, and advise organizational leaders on financial risks and decisions. The role is hands-on and includes oversight of audits, tax obligations, cash management, payroll, investments, and multi-jurisdictional reporting.

Lead the finance function across accounting, FP&A, tax, treasury, reporting, controls, and finance operations. Manage and develop the finance team, oversee revenue recognition and international obligations, strengthen systems and workflows, support budgeting and forecasting, and advise senior leaders on financial risks and decisions. The role also oversees audits, external advisers, cash management, partner arrangements, payroll finance oversight, and reporting to affiliated organizations.

Own strategic enterprise customer relationships across Germany, Austria, and Switzerland. Guide customers from pilot through deployment, adoption, and expansion; monitor account health; lead business reviews; manage renewals, forecasts, risks, and escalations; and coordinate cross-functional teams. The role also identifies support and broader Firefox Enterprise opportunities while maintaining trusted relationships with executive, technical, procurement, and partner stakeholders.

Own the full enterprise sales cycle for Firefox Enterprise across Germany, Austria, and Switzerland. Build pipeline, qualify opportunities, develop business cases, negotiate contracts, and close deals with enterprises, regulated organizations, and public-sector accounts. Partner with business development and solutions engineering teams on market strategy, technical discovery, pilots, and customer rollouts. Engage executive and technical stakeholders while refining Mozilla’s regional sales motion and value propositions around security, resilience, deployment flexibility, and trust.

Supports enterprise sales of Firefox Enterprise across the DACH region by leading technical discovery, solution design, workshops, pilots, proofs of concept, deployment planning, and interoperability validation. Advises customers on enterprise security, identity, endpoint management, policy, certificates, networking, and integration architecture. Creates technical enablement assets, manages technical customer relationships, supports partners, and translates regulatory requirements into deployable solutions.