Last seen September 22, 2026
Posted August 7, 2026 · 45 days ago
Open 45 days. This role usually stays open about 35 days
Est. expiry September 11, 2026

Senior Backend Engineer

Backend Engineer
Canada
RemoteFull-time, Senior
Estimated €9,826 - €15,567
Job description

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, CloudEng, 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. 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 - 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 - Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests - Thoughtfully apply AI-assisted development tools - Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs - Participate in code reviews and security and privacy reviews What you’ll bring: - 4+ years of experience in software development with a strong focus on backend technologies - Strong professional experience with Python, TypeScript/Node.js, or Rust - Proficiency with PostgreSQL and SQL query optimization - Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines - Hands-on experience with observability and monitoring tooling such as Sentry and Grafana - A pragmatic commitment to shipping quality work - Strong engineering judgment - A genuine ownership mindset - Experience mentoring junior engineers Bonus Points for experience with: - Performance / load testing - Experience with IaC tools such as Terraform and Kubernetes - Open-source contributions or personal engineering projects - Django experience

The text above is the employer's original job description, extracted as written. Other details on this page, like salary, responsibilities, and requirements, are interpreted from that text by our system, not values the employer explicitly confirmed, so treat them as our best interpretation rather than verified facts.

How this salary compares
Estimated €9,826 - €15,567

Estimated from 14 comparable listings

11% below Senior level roles
€9,826€14,776 median€18,168
Responsibilities
  • Lead backend development and maintain server-side logic
  • Deploy, operate, and monitor services in production
  • Collaborate with CloudEng to improve production environments using OpenTelemetry, Sentry, Prometheus, and Grafana
  • Participate in on-call and off-hours support rotations
  • Handle releases, dependency updates, and stakeholder work requests
  • Partner with frontend and cross-functional teams on API design and data contracts
  • Participate in code, security, and privacy reviews
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
  • Proficiency with PostgreSQL and SQL query optimization
  • Hands-on DevOps experience on Google Cloud Platform (GCP) with Docker-based pipelines
  • Experience with observability and monitoring tooling such as Sentry and Grafana
  • Experience mentoring junior engineers
Mozilla logo
Mozilla · 5 open roles
Top locations: Remote - Global · 60 · Remote - Finland · 55 · Remote - Germany · 53+12 other locations
View company
Current open roles at Mozilla on JobCrawls
LocationActive listings
Remote - Global60
Remote - Finland55
Remote - Germany53
Remote - France52
Remote - Netherlands52
Remote - Sweden51
Remote - Belgium50
Remote - UK50
Remote - Spain49
Remote - Poland41
Remote - Canada38
Remote - US19
Remote - Denmark6
Remote - New Zealand5
Remote - Australia5
Current role mix at Mozilla on JobCrawls
Role typeActive listings
Software Engineer60
Senior Software Engineer5
Product Manager5
Machine Learning Engineer4
Security Engineer3
Executive Assistant3
Solutions Engineer2
Program Manager2
Frontend Engineer2
Site Reliability Engineer2
Product Director1
Fundraising Strategist1
Public Policy & Government Relations Manager1
Strategic Finance and Investment Strategy1
Application Engineer1
Security Student Worker1
Privacy Counsel1
Marketing Data Scientist1
Engineer1
Senior Engineering Manager1
Data Scientist1
Operations Engineer1
Grassroots Engagement Director1
Creative Producer1
Senior Staff Product Manager1
Quantitative User Researcher1
Business Development Manager1
iOS Engineer1
Test Engineering Manager1
Web Apps Manager1
Integrated Marketing Consultant1
Software Test Engineering1
Social Media & Content Strategist1
Strategic Account Executive1
Head of Global and Strategic Intelligence1
AI & Agentic Systems Engineer1
Marketing Specialist1
Current role-level mix at Mozilla on JobCrawls
Role levelActive listings
Senior61
Mid-Level40
Manager8
Director6
About the employer

Mozilla Corporation is a non-profit-backed technology company that creates pioneering brands like the Firefox web browser. It is wholly owned by the non-profit Mozilla Foundation and focuses on making the internet a public resource that is open and free, rather than closed and controlled.

Core values
Purpose-driven missionChallenge assumptions and status quoTransparency in code and interactionsDiversity of backgrounds and perspectivesPeople ahead of profit

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