Senior Software Engineer Job New York New York USA,Software Development

Location: New York

As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production
You’ll do this while collaborating closely with frontend engineers, product managers, Cloud Eng, and UX and design partners to deliver reliable features
We are looking for engineers who treat the systems they build as their own: people who are comfortable owning a service end to end, from writing the code to verifying it works as intended in production and monitoring its health
We are hiring for multiple Ecosystem Services Team back-end teams - each solving their own unique challenges to make the web better for everyone. More details about all hiring teams will be shared in the interviews
Ecosystem Services 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
Our portfolio spans a diverse set of platforms and services. Representative examples include Privacy Services, which provides the APIs and infrastructure behind Mozilla VPN, Relay (email and phone aliasing), and Monitor (data breach detection and remediation);
Auto Push, Mozilla’s Web Push platform for securely delivering notifications and real-time updates to Firefox clients; and Remote Settings, Mozilla’s platform for delivering configuration updates to Firefox outside the regular release cycle. Together with many other backend platforms across the organization, these services help deliver secure, reliable experiences to Mozilla users every day
Our teams own services end-to-end from designing and building distributed systems, to operating them in production, improving reliability, and evolving the cloud infrastructure they run on. We work closely with product, frontend engineering, Cloud Engineering, UX, and design partners to build resilient systems that make the web better for everyone
We’re hiring backend engineers across multiple Ecosystem Services teams, each tackling different technical challenges while sharing a culture of ownership, collaboration, and operational excellence. More details about the specific teams and domains will be shared during the interview process
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 Cloud Eng Team to maintain and improve production environments, including monitoring and alerting with tools such as Open Telemetry, Sentry, Prometheus, and Grafana
Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with Cloud Eng 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
Partic…