Contract Staff Software Engineer - (Firefox) C++,Storage Encryption
Mozilla · Remote Canada; Remote Germany; Remote UK · posted Oct 20, 2026
Open to candidates in Canada, Germany and United Kingdom
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What this role actually asks for
Extracted by RemoteHuntMust have
- •Strong C++
- •Browser-engine codebase experience (ideally Firefox/Gecko)
- •Substantial database experience
- •Web standards and Web Platform Tests familiarity
- •Debugging and optimization in multithreaded codebase
- •Comfort working in the open (bugs, code review, upstream landing)
Nice to have
- •Prior contributions to Gecko or major browser engine
- •Familiarity with standards body and specification process
Tools and technologies
The full posting
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.
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