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Contract Staff Software Engineer - (Firefox) C++,Storage Encryption

Mozilla · Remote UK

Extracted from the posting

Base
Not stated
Remote
Remote
Eng team
Firefox DOM LWS team
Stack
C++, Gecko, Firefox, Web Platform Tests

Staff software engineer implementing Storage Encryption Everywhere in Firefox/Gecko, including data migration, storage implementation in private browsing mode, and Web Platform Tests. Works with DOM LWS team shipping features through release. Stack: C++, Gecko browser engine, databases, web standards.

The role

You will help the Firefox DOM LWS team to implement tasks for Storage Encryption everywhere, helping to drive the in-progress project through to completion .

Responsibilities

  • Contributing to delivering Storage Encryption Everywhere in Gecko, which may include tasks such as migrating data between schemas, implementing data storage in PBM and integration testing.
  • Write and pass Web Platform Tests, and add Gecko tests as needed.
  • Work through code review with the relevant Gecko module owners and iterate to landing.
  • Surface and help resolve any specification questions the implementation raises.
  • Shepherd the feature through Nightly, Beta, and Release. Fix correctness, performance issues and regressions.

Definition of done

Ship Storage Encryption Everywhere to release channel. Fix triaged and prioritized issues.

Required qualifications

  • Strong C++.
  • Substantial experience in a browser-engine codebase, ideally Firefox/Gecko.
  • Substantial experience in databases.
  • Familiarity with web standards and Web Platform Tests.
  • Strong debugging and optimization in a multithreaded codebase.
  • Comfort working in the open: public bugs, code review, and upstream landing.

Preferred

  • Prior contributions to Gecko or another major browser engine.
  • Familiarity with the relevant standards body and specification process.

Technologies

C++GeckoFirefoxWeb Platform Tests
Mozilla
Mozilla

Job details

TypeContract
Work ModeRemote
LevelSenior
LocationRemote UK
PostedOct 26, 2026
Apply Now

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