Senior Software Engineer
Job description
A Senior Software Engineer role on Mozilla's Ecosystem Services Team, building and owning back-end systems and integrations, maintaining cloud infrastructure, and keeping services reliable in production. The team builds and operates back-end platforms powering Mozilla products and services.
At a glance
- Employment
- Full-time · Employee (employment agreement)
- Work mode
- Remote
What you'll do
- Lead backend development, building and maintaining server-side logic
- Take real ownership of the services you work on: deploy them, operate them, and keep them healthy in production rather than handing them off
- Work closely with our CloudEng Team to maintain and improve production environments, including monitoring and alerting with tools such as OpenTelemetry, Sentry, Prometheus, and Grafana
- Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with CloudEng and support teams to investigate incidents, address bug reports, and keep the application running reliably
- Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests from customer support and other stakeholders
- Thoughtfully apply AI-assisted development tools to move faster and raise quality, while maintaining good judgment about where they fit and where they don't
- Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs
- Partner with frontend and cross-functional teams to align on project goals, contribute to API design, and ensure backend systems, APIs, and data contracts meet their needs
- Participate in code reviews to maintain high standards of code quality and system reliability
- Participate in security and privacy reviews, ensuring all data protection measures meet compliance standards
What we're looking for
- 4+ years of experience in software development with a strong focus on backend technologies
- Strong professional experience with Python, TypeScript/Node.js, or Rust building back-end services and confidence leading back-end engineering projects
- Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations with a query builder such as Knex
- Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines; comfortable deploying, operating, and troubleshooting services in the cloud
- Hands-on experience with observability and monitoring tooling such as Sentry and Grafana
- A pragmatic commitment to shipping quality work, making sensible trade-offs under real constraints, and consistently moving work to and into production
- Strong engineering judgment: navigate ambiguity, weigh trade-offs, and make sound decisions with incomplete information, and know when to ask for input
- A genuine ownership mindset: excited to own a service end to end and a track record of operating what you build in production, including experience with on-call or off-hours production support
- Experience mentoring junior engineers and driving technical excellence in code quality, testing, and process improvements
Nice to have
- Performance / load testing
- Experience with IaC tools such as Terraform and Kubernetes
- Open-source contributions or personal engineering projects
- Django experience
Your team
Ecosystem Services Team
Builds and operates the back-end platforms that power Mozilla products and services, with a focus on privacy, security, and delivering critical functionality to Firefox and millions of users worldwide. Portfolio includes Privacy Services (APIs and infrastructure behind Mozilla VPN, Relay, and Monitor), AutoPush (Web Push platform), and Remote Settings.
Benefits
- Generous performance-based bonus plans to all 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 where everyone takes a pause together
- 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 (life/AD&D, disability, EAP, etc. - varies by country)
Apply
Direct apply at Mozilla
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About Mozilla
The non-profit-backed technology company that has shaped the internet for the better over the last 25 years
Mozilla Corporation is the non-profit-backed technology company behind brands like Firefox, the privacy-minded web browser. It is wholly owned by the non-profit 501(c) Mozilla Foundation, so it isn't beholden to any shareholders — only to its mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.
Mission
To make the internet better for people; to build the Internet as a public resource accessible to all because open and free is better than closed and controlled
Key facts
- Technology
- More than 225 million people around the world use Mozilla products each month
- Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation
- Work focuses on diverse areas including AI, social media, security and more
- Products include Firefox, Mozilla VPN, Relay, and Monitor
What they value
- Open and free is better than closed and controlled
- Diversity, equity, inclusion, and belonging
- Ownership, collaboration, and operational excellence