Mozilla’s Ecosystem Services Team is looking for a Senior Software Engineer to build and own back-end systems and integrations that keep Mozilla services operating reliably in production. This remote role focuses on backend engineering, cloud infrastructure maintenance, and active participation in operational support.
Role Overview
In this position, you will lead backend development and take direct responsibility for the services you build, including deployment, day-to-day operation, and ongoing health monitoring in production. You will collaborate across teams to maintain production environments, improve reliability, and ensure backend systems, APIs, and data contracts meet stakeholder needs.
Responsibilities
- Lead backend development by building and maintaining server-side logic.
- Operate with real ownership of services, including deploying, running, and keeping them healthy in production.
- Partner with the CloudEng Team to maintain and improve production environments, including monitoring and alerting using tools such as OpenTelemetry, Sentry, Prometheus, and Grafana.
- Participate in an on-call / off-hours rotation to triage and resolve production issues, working with CloudEng and support teams during incident investigation, bug resolution, and service stabilization.
- Periodically rotate into support to manage releases, dependency updates, and incoming work requests from customer support and other stakeholders.
- Apply AI-assisted development tools thoughtfully to improve speed and quality while maintaining good judgment about appropriate use.
- Support stakeholders such as front-end and platform teams to ensure backend systems, APIs, and data contracts align with their needs.
- Collaborate with frontend and cross-functional partners on project goals, contributing to API design and ensuring backend delivery matches contract expectations.
- Participate in code reviews to uphold high standards for code quality and system reliability.
- Participate in security and privacy reviews to ensure data protection measures meet compliance standards.
Requirements
- 4+ years of experience in software development with a strong focus on backend technologies.
- Strong professional experience with Python, TypeScript/Node.js, or Rust for building back-end services, with confidence leading back-end engineering projects.
- Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations using a query builder such as Knex.
- Hands-on DevOps experience on Google Cloud Platform (GCP), including Docker-based build and deploy pipelines, with comfort deploying, operating, and troubleshooting cloud services.
- Hands-on experience with observability and monitoring tools such as Sentry and Grafana.
- Pragmatic commitment to shipping quality work, with sensible trade-offs under real constraints and consistent progress into production.
- Strong engineering judgment to navigate ambiguity and make decisions with incomplete information, including knowing when to ask for input.
- Ownership mindset with experience operating services in production, including on-call or off-hours production support.
- Experience mentoring junior engineers and improving technical excellence in areas such as code quality, testing, and process.
Technologies
- Python
- TypeScript
- Node.js
- Rust
- PostgreSQL
- SQL
- Knex
- Google Cloud Platform (GCP)
- Docker
- OpenTelemetry
- Sentry
- Prometheus
- Grafana
- AI-assisted development tools
- Django
- Terraform
- Kubernetes
About the Team and Role
As a Senior Software Engineer on the Ecosystem Services Team, you will build and own back-end systems and integrations that keep Mozilla services running. You will help maintain and evolve the cloud infrastructure the application runs on, play an active role in production reliability and operational health, and collaborate with frontend engineers, product managers, CloudEng, and UX and design partners to deliver reliable features.
Mozilla is hiring for multiple Ecosystem Services Team back-end teams, each solving distinct challenges while maintaining a culture of ownership, collaboration, and operational excellence.
About Ecosystem Services
Ecosystem Services builds and operates the back-end platforms powering Mozilla products and services, with focus on privacy, security, and critical functionality for Firefox and millions of users worldwide. Representative examples include Privacy Services (Mozilla VPN, Relay, Monitor), AutoPush, and Remote Settings. These services help deliver secure, reliable experiences and are owned end-to-end from design and distributed systems development through production operations, reliability improvements, and cloud infrastructure evolution.
Bonus Points for Experience
- Performance and load testing.
- Experience with Infrastructure as Code (IaC) tools such as Terraform and Kubernetes.
- Open-source contributions or personal engineering projects.
- Django experience.
Location
Remote
Compensation and Benefits
- Generous performance-based bonus plans for eligible employees.
- Rich medical, dental, and vision coverage.
- Generous retirement contributions with 100% immediate vesting regardless of whether you contribute.
- Quarterly all-company wellness days.
- Country-specific holidays plus a day off for your birthday.
- One-time home office stipend.
- Annual professional development budget.
- Quarterly well-being stipend.
- Considerable paid parental leave.
- Employee referral bonus program.
- Other benefits including life/AD&D, disability, and EAP (varies by country).
Mozilla Context
Mozilla Corporation is a non-profit-backed technology company that has shaped the internet for the better over the last 25 years. Mozilla makes pioneering brands like Firefox and focuses on areas including AI, social media, and security, with the mission to make the internet better for people. Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation, and Mozillians design, build, and distribute open-source software.
Diversity, Equity, Inclusion, and Belonging
- Mozilla encourages applications from everyone, including members of all equity-seeking communities.
- Mozilla will provide reasonable accommodations for qualified individuals with disabilities during the application or interview process.
- Contact hiringaccommodation@mozilla.com to request accommodation.
- Mozilla is an equal opportunity employer and does not discriminate or tolerate discrimination or harassment.
