Mozilla
Rising
We’re working to put control of the internet back in the hands of the people using it.
- Open roles
- 192
- New role every
- ~0.6 days
- Posting trend
- 6.2× vs prior 90d
Company signals
Score: 85
Posting cadence (90d/prior)
11.2x
Wikipedia
Yes
Repost rate (90d)
3%
GitHub org
Yes
Stale listings
7%
New cities (90d)
9
HN mentions (90d)
333
Buzzword-heavy listings
21%
Job facts
- Location
- Remote
- Workplace
- Remote
- Department
- Firefox
- Posted
- Oct 20, 2026
Last verified live 4 days, 18 hours ago · checked directly on the company's Greenhouse
Applications powered by
Greenhouse
More roles at Mozilla
- Staff Site Reliability Engineer, Tools & Systems · Remote UK
- Staff Site Reliability Engineer, Tools & Systems · Remote Germany
- Staff Site Reliability Engineer, Tools & Systems · Remote France
- Staff Site Reliability Engineer, Tools & Systems · Remote Sweden
- Staff Site Reliability Engineer, Tools & Systems · Remote Netherlands
- Staff Site Reliability Engineer, Tools & Systems · Remote Spain
Contract Staff Software Engineer - (Firefox) C++,Storage Encryption
at Mozilla
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.