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Senior Full-Stack Engineer, Email Systems

22 hours, 47 minutes ago
United Kingdom
Full-time
Senior
Full-stack Engineer
Software Development
AWS Java JavaScript Prototyping Pulumi Python Rust TypeScript
Apply Now
Mozilla

Mozilla

Mozilla, the maker of Firefox, is a non-profit organization ensuring an open, safe, and accessible internet for all users worldwide.

Internet Software & Services
251-1K
Founded 2005
$2M raised
View All Jobs 96

Description

  • Build and prototype new features and solutions for complex technical challenges.
  • Develop and maintain metrics to monitor email delivery rates, sender reputation, and service-level issues.
  • Monitor email industry standards, trends, and emerging threats, and propose improvements to delivery and spam resilience.
  • Develop, test, and evolve code architecture to improve scalability, maintainability, and robustness.
  • Conduct code reviews and contribute to technical strategy and architectural decisions.
  • Collaborate with designers and product leads to build and deploy prototypes and experiments that improve workflows, conversions, and privacy-respecting analytics.
  • Evaluate and implement improvements across security, logging, performance, and accessibility.
  • Support the stability and reliability of services, including participating in a shared on-call rotation.
  • Work with engineers and community members to develop and maintain user-facing features.
  • Diagnose and resolve email issues at scale.

Requirements

  • 7+ years of professional software development experience, including 2+ years in a Senior Software Engineer role.
  • 2+ years of experience with JavaScript/TypeScript and 2+ years working with Python 3.
  • Experience building and maintaining email services.
  • Experience building and maintaining web applications.
  • Experience working across the full software development life cycle from product inception through customer delivery.
  • Ability to translate wireframes, style guides, and design direction into polished, production-ready visual experiences.
  • Proven ability to deploy and manage web infrastructure on AWS or similar cloud providers.
  • Excellent English written and verbal communication skills for an international, geographically distributed team.
  • Strong collaboration skills with technical and non-technical teams and a commitment to open, privacy-respecting development.
  • Bonus points for Java and/or Rust development experience, familiarity with Stalwart, experience with an Identity Provider such as Keycloak, Infrastructure as Code experience with Pulumi, and contributions to open-source projects.

Benefits

  • Base salary targeted to the 60th percentile of the peer market, with a UK range of £62,000 - £72,000 GBP.
  • Fully remote work with schedule flexibility.
  • Discretionary annual bonus program and monthly remote work stipend.
  • Annual professional development stipend, plus access to Udemy and industry conferences.
  • 24 days of PTO per year, plus your birthday, year-end company shutdown, public holidays, other paid leave, and 9 wellbeing days.
  • Quarterly wellbeing stipend for personal or family activities.
  • Health, dental, and vision insurance, plus disability and life insurance.
  • Pension contributions, employee assistance program, paid parental leave, and paid sick days.

Interested in this position?

Apply directly on the company website

Apply Now

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