Jobs at Mozilla

Develop and manage direct client and agency relationships across the UK and Europe, sell Mozilla’s digital advertising products, exceed revenue and logo targets, build sales pipelines, analyze campaign performance, maintain CRM records, and communicate customer feedback to product and marketing teams. The role requires strong digital media sales experience, major agency and brand relationships, knowledge of online media planning and performance advertising, and excellent communication and organizational skills.

Own the Firefox Enterprise product strategy, roadmap, requirements, metrics, and delivery for hosted and on-premise offerings. Partner with engineering, design, security, infrastructure, legal, sales, finance, support, and enterprise customers to prioritize needs, launch products, support compliance, and enable go-to-market readiness. The role also contributes to cross-workstream planning, new enterprise capabilities, market expansion, and product team mentorship.

Build and manage Firefox Enterprise partnerships across France’s technology, cloud, public-sector, open-source, and systems-integration ecosystems. Responsibilities include identifying partners, developing joint plans and offerings, negotiating commercial agreements, generating partner-led revenue, coordinating co-selling and marketing, and reporting results. The role requires strong French and English communication, B2B technology partnership experience, commercial negotiation skills, technical understanding of enterprise software, and willingness to travel across France.

Leads Thunderbird’s finance function, overseeing accounting, FP&A, tax, treasury, reporting, revenue recognition, controls, budgeting, forecasting, and finance operations. Manages the finance team, strengthens systems and workflows, supports international and partner-led commercial arrangements, and advises organizational leaders on financial risks, tradeoffs, and decisions. The role is fully remote and requires substantial North American working-hour overlap, with periodic domestic or international travel.

Leads Thunderbird’s accounting and finance function, including financial reporting, FP&A, budgeting, forecasting, tax, treasury, revenue recognition, controls, and finance operations. Manages the finance team, strengthens systems and workflows, oversees international and partner-led financial arrangements, and advises senior leaders on risks, performance, and strategic decisions. The role is fully remote with required time-zone overlap and periodic domestic or international travel.

Leads Mozilla’s European policy communications strategy, translating complex issues involving privacy, AI, competition, open source, and internet regulation into compelling public narratives. Builds relationships with journalists, policymakers, advocates, and influencers; develops press materials, policy statements, speeches, and executive briefings; prepares spokespeople for high-stakes engagements; advises senior leaders; and manages proactive, reactive, and crisis communications across regions.

Maintain and mature Mozilla's ISMS and support ISO 27001 and SOC 2 Type 2 audit programs. Author system descriptions and policies, manage risk treatment plans, track remediation, support internal audits, and partner with Engineering, Legal, Privacy, and Product to drive control ownership and audit readiness.

Maintain and mature Mozilla's ISMS, support ISO 27001 and SOC 2 Type 2 audits, author compliance narratives, track remediation, lead policy program, scale compliance for products, and partner with cross-functional teams to drive control ownership and audit readiness.

Develop and optimize Firefox performance across Windows, Android, Linux, and macOS. Write code, tests, prototypes, and tooling; profile and diagnose bottlenecks; improve benchmarks; and lead performance initiatives. Collaborate across engineering teams, educate developers, drive projects to completion, own browser performance areas, and contribute to the team’s technical roadmap.

Design and implement experiments deep within browser engine subsystems, including DOM, layout, rendering, accessibility, JavaScript runtimes, and networking. Investigate browser behavior, prototype capabilities for programmatic web interaction, measure performance and correctness, profile overhead, and document results. The role requires hands-on systems engineering, browser platform expertise, large-codebase development, and collaboration on AI-agent tooling.

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.

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.

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.

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.

Build and operate Mozilla’s first B2B technical support operations capability. Own support vendors, workflows, training, capacity planning, metrics, governance, escalations, incident response, and continuous improvement. Coordinate with Product, Engineering, Customer Success, Sales, Legal, Finance, and Procurement to deliver reliable enterprise support. Translate customer and support insights into improvements across products, processes, tooling, documentation, and automation.

Lead data science for Mozilla’s advertising business by identifying high-impact opportunities, owning complex analyses, developing measurement and experimentation frameworks, analyzing revenue and performance, and translating findings into recommendations for technical partners and executives. Partner across Product, Engineering, Sales, Finance, and leadership to support business decisions in a fast-moving environment while balancing analytical rigor, pragmatism, and user privacy.