Jobs at Mozilla

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.

Monitor and respond to global security incidents, lead incident response activities, develop alerts, playbooks, automation, and escalation workflows, conduct threat hunting, analyze threat intelligence, and improve security processes. The role participates in on-call rotations and partners with stakeholders across Mozilla to protect products and users.

Monitor and respond to global security incidents, lead incident response lifecycles, maintain alerts and automated playbooks, conduct threat hunting, manage threat intelligence workflows, and participate in on-call operations. The role partners with stakeholders to improve detection, containment, recovery, and post-incident processes across Mozilla products and services.

Monitor and respond to global security incidents, lead incident response lifecycles, conduct threat hunting, manage threat intelligence workflows, and maintain SIEM, EDR, SOAR, alerts, playbooks, and escalation processes. The role participates in on-call rotations, coordinates stakeholders, and drives continuous improvement across preparation, detection, containment, and post-incident activities.

Monitor and respond to global security incidents, lead incident response lifecycles, maintain alerts and automated workflows, conduct threat hunting, research threat intelligence, and improve security operations processes. The role participates in on-call rotation and collaborates with stakeholders to protect Mozilla products and users.

Monitor and respond to global security incidents, lead incident response activities, maintain alerts, automation, playbooks, and escalation workflows, conduct threat hunting, analyze threat intelligence, and improve detection and response processes. The role includes incident command, stakeholder collaboration, post-incident reviews, and participation in a 24/7 on-call rotation.

Monitor and respond to global security incidents, lead incident response as an incident commander, and maintain alerts, playbooks, automation, and escalation workflows. Conduct threat hunting, analyze threat intelligence, manage security response workflows, and collaborate with stakeholders across the incident lifecycle. Participate in an on-call rotation while continuously improving Mozilla’s security operations and incident response capabilities.

Monitor and respond to global security incidents, lead incident response lifecycles, maintain alerts and automated workflows, conduct threat hunting, manage threat intelligence, and improve security operations processes. The role participates in on-call rotations and collaborates with stakeholders to protect Mozilla products and users.

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.

Lead architecture and technical direction for Thunderbird’s web Services products, including calendar and secure file storage offerings. Design scalable systems, write code, build prototypes, establish software patterns, and contribute across development, testing, monitoring, and maintenance. Solve ambiguous technical and product problems, develop analytics and infrastructure, mentor engineers, collaborate with distributed cross-functional and open-source teams, and help improve user and subscriber growth.

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.

Own the full enterprise sales cycle for Firefox Enterprise across Germany, Austria, and Switzerland. Build pipeline, qualify opportunities, develop business cases, run pilots, negotiate contracts, and close complex deals with enterprises, regulated organizations, and public-sector accounts. Engage technical and executive stakeholders, collaborate with business development and solutions engineering, and help refine Mozilla’s regional sales strategy for security, privacy, resilience, and digital workplace solutions.

Build, deploy, operate, and improve backend services and cloud infrastructure supporting Mozilla products. Responsibilities include backend development, API and data contract design, production monitoring, incident response, on-call support, releases, security and privacy reviews, code reviews, and mentoring. The role requires end-to-end service ownership, collaboration with frontend and cloud teams, and maintaining reliable production systems using modern observability and DevOps practices.

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.

Design, develop, and maintain Thunderbird's iOS app with a focus on performance, reliability, security, accessibility, and scalability. Own projects end-to-end, debug and test across unit/integration/automation, review code, reduce technical debt, document architecture, and collaborate with product, UX, and the open-source community.

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.