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Mozilla Logo

Senior Software Engineer, Backend

Mozilla

$116,000 - $183,000
Nov 13, 2025
Remote, US
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Mozilla Corporation is looking to expand the value and agency of its Firefox web browser for users by developing new features and capabilities for the New Tab section, requiring high-quality backend systems for recommendation and content services.

Requirements

  • 4+ years experience as a software engineer
  • 3+ years working experience with NodeJS or Python, Testing Frameworks.
  • Working experience with SQL, React, Cloud Infra, AWS, Docker, GraphQL, TypeScript, CI/CD pipelines, Relational Databases.
  • A background in shipping high quality software

Responsibilities

  • Build high quality backend systems for Firefox offering up recommendation and content services for New Tab
  • Write code and tests, build prototypes, solve problems with no clear solution, collaborate with other designers and engineers to make the web a better place
  • Learn about a wide variety of problems and solutions across a large, mature codebase
  • Work with multi-functional teams, building relationships and nurturing collaboration to reach shared goals
  • Help to level-up the skills of your fellow engineers through code reviews, giving talks, and/or writing documentation
  • Promote and maintain high standards of code-quality, focusing on performance, testing, security, usability, accessibility and maintainability
  • Work with driven, committed team members to bring the open web to people around the world

Other

  • Interest in and ability to work with a distributed team (requires good asynchronous written communication skills as well as good verbal communication skills)
  • Willingness to provide and receive constructive feedback
  • Contributions through asking questions and proposing new ideas
  • A love of working with others collaboratively
  • A keen interest in AI and bringing value of this tool to users in a privacy preserving and secure way.