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Senior Manager, Firefox Mobile Test Engineering

Spain; United Kingdom; Germany, Remote Employment contract 134000.00 - 178000.00 GBP / Year · Job Posted June 14, 2026
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Job Description

In support of our mission to make the internet a healthier place, we aim to make Firefox the best mobile browser for security, privacy, speed, and empowering user choice. Firefox Mobile is used by tens of millions of people across Android and iOS every month. The Test Engineering team is responsible for making sure that experience is excellent – through test automation infrastructure, observability tooling, and hands-on exploratory testing. We're growing this team's scope and ambition, and we're looking for a senior leader to own it. This is a role for someone who thinks about quality the way a great product manager thinks about users: with curiosity, with ownership, and with a bias toward finding the things that matter most. You'll set our overall test strategy, lead our exploratory testing program, and manage a team of engineers building the automation infrastructure and observability tooling that keeps Firefox Mobile healthy at scale. You'll manage a team of full-time engineers plus a group of contractors, and you'll work in close partnership with our Android and iOS engineering, product, and UX teams to help us all collectively drive greater development speed, developer ease, and product quality.

Job Responsibility

  • Set and own Firefox Mobile's overall quality strategy
  • Manage our Test Automation Engineering
  • Oversee our observability work, including dashboards and automated reporting
  • Lead our exploratory testing work, including teaching exploratory testing skills
  • Partner closely with Product, UX, and Engineering leadership to identify quality gaps and advocate for fixes
  • Manage and support a geographically distributed team

Requirements

  • 10+ years of experience in test engineering, including 5+ years in technical management roles
  • A genuine philosophy about software quality
  • Experience building or significantly transforming a testing practice, including hands-on knowledge of exploratory testing methods and test automation approaches
  • Track record of building collaborative relationships with development teams and influencing how engineers think about quality
  • Ability to synthesize qualitative and quantitative signals into a coherent picture of product health and a clear set of priorities
  • Strong communication skills and track record of effective partnership with Product, UX, and senior engineering leadership
  • Able to grow and scale a distributed team members with a range of skills and backgrounds
  • Commitment to our values: Welcoming differences
  • Being relationship-minded
  • Practicing responsible participation
  • Having grit

Nice to have

  • Hands-on experience with mobile testing on Android and/or iOS
  • Familiarity with test automation frameworks for mobile (e.g. XCUITest, Espresso, or similar)
  • Experience working in open source environments
  • Background in or strong appreciation for user research and UX as inputs to quality

What we offer

  • Generous performance-based bonus plans
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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.)

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