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Mozilla

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Technical roles collected by JobSnout, including past vacancies. Tracking since 27 Aug 2026. Last successful scan: 05 Nov 2026. All observation dates are UTC.

This is JobSnout’s recorded coverage, not the company’s complete hiring history. First seen is when we found a posting, not its publication date. “No longer seen” means it disappeared across repeated successful scans; it does not mean someone was hired.

55
Current roles
31
Past roles
86
Roles recorded
0
Reappearances recorded

Roles advertised

31 past roles · newest first · page 1 of 1. Source duplicates are folded into their retained posting.

RoleStatusLocationFirst seenLast seenMarked no longer seen
Contract Staff Software Engineer-Bug BurndownJavaScriptNo longer seenRemote Canada; Remote Germany; Remote UK07 Oct 202608 Oct 202609 Oct 2026
Senior Security Engineer - SecOpsAWSAzureGCPNo longer seenRemote; Remote Germany29 Sept 202602 Nov 202603 Nov 2026
Contract Software Engineer - WebCompat Tooling (Dashboards and Reporting), FirefoxPythonJavaScriptNo longer seenRemote France; Remote Germany; Remote Netherlands; Remote Sweden; Remote UK22 Sept 202626 Oct 202627 Oct 2026
Senior Software Engineer, Add-OnsNo longer seenUK17 Sept 202617 Sept 202621 Sept 2026
Software Engineer, Release EngineeringNo longer seenUK06 Sept 202606 Sept 202609 Sept 2026
Software Engineer, Release EngineeringNo longer seenUK04 Sept 202604 Sept 202606 Sept 2026
Software Engineer, Release EngineeringPythonAWSAzureGCPNo longer seenRemote UK02 Sept 202609 Sept 202611 Sept 2026
Software Engineer, Release EngineeringPythonAWSAzureGCPNo longer seenRemote France02 Sept 202609 Sept 202611 Sept 2026
Software Engineer, Release EngineeringPythonAWSAzureGCPNo longer seenRemote Germany02 Sept 202609 Sept 202611 Sept 2026
Senior Software Engineer, DesktopNo longer seenUK02 Sept 202602 Sept 202604 Sept 2026
Senior Software Engineer, SecurityNo longer seenUK02 Sept 202602 Sept 202604 Sept 2026
Senior Security Engineer, Bug BountyNo longer seenUK02 Sept 202602 Sept 202604 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Sweden27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Spain27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Belgium27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Germany27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Finland27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote UK27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote France27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox SecurityRustC++No longer seenRemote Netherlands27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote UK27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Finland27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Germany27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote France27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Sweden27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Netherlands27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Spain27 Aug 202603 Sept 202605 Sept 2026
Senior Software Engineer, Firefox DesktopRustC++No longer seenRemote Belgium27 Aug 202603 Sept 202605 Sept 2026
Senior Security Engineer, Bug BountyPythonJavaScriptRustAWSAzure+1No longer seenRemote Germany27 Aug 202624 Sept 202625 Sept 2026
Senior Security Engineer, Bug BountyPythonJavaScriptRustAWSAzure+1No longer seenRemote UK27 Aug 202624 Sept 202625 Sept 2026
Senior Mobile Engineer, iOS.NETRESTNo longer seenRemote; Remote 27 Aug 202630 Oct 202631 Oct 2026

Observed hiring activity

Monthly observations, up to the last 12 months. The initial import can produce a spike. These counts measure postings and reappearances, not hires, headcount growth or unique recruitment campaigns. The current month is incomplete.

Month (UTC)First seenNo longer seenReappeared
2026-081900
2026-0930270
2026-103430
2026-11310

Technologies in current roles

Counts are current postings mentioning each technology, not evidence of changes in the company’s stack.

JavaScript · 34C++ · 31Python · 28Rust · 27TypeScript · 17GCP · 15SQL · 12Kubernetes · 11MySQL · 8Terraform · 8AWS · 7Azure · 7

Observation timeline

136 recorded events, newest first. Posting updates do not retain historical text versions; role links show the latest stored description.

  1. First observediOS Software Engineer
  2. First observedStaff Software Engineer, Firefox Enterprise
  3. First observedStaff Software Engineer, Firefox Enterprise
  4. Posting updatedStaff Software Engineer, Tools & Systems
  5. Posting updatedStaff Software Engineer, Tools & Systems
  6. Posting updatedStaff Software Engineer, Tools & Systems
  7. Posting updatedStaff Software Engineer, Tools & Systems
  8. Posting updatedStaff Software Engineer, Tools & Systems
  9. Posting updatedStaff Software Engineer, Tools & Systems
  10. Posting updatedStaff Software Engineer, Tools & Systems
  11. Posting updatedStaff Software Engineer, Tools & Systems
  12. Marked no longer seenSenior Security Engineer - SecOps
  13. Marked no longer seenSenior Mobile Engineer, iOS
  14. Posting updatedSenior Contract Web Developer - Firefox (Browser Engine)
  15. Posting updatedSenior Contract Software Engineer (JavaScript) - Firefox
  16. Marked no longer seenContract Software Engineer - WebCompat Tooling (Dashboards and Reporting), Firefox
  17. Posting updatedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  18. First observedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  19. First observedStaff Software Engineer, Tools & Systems
  20. First observedStaff Software Engineer, Tools & Systems
  21. First observedStaff Software Engineer, Tools & Systems
  22. First observedStaff Software Engineer, Tools & Systems
  23. First observedStaff Software Engineer, Tools & Systems
  24. First observedStaff Software Engineer, Tools & Systems
  25. First observedStaff Software Engineer, Tools & Systems
  26. First observedStaff Software Engineer, Tools & Systems
  27. First observedSenior Software Engineer, Privacy
  28. First observedSenior Software Engineer, Privacy
  29. First observedSenior Software Engineer, Privacy
  30. First observedSenior Software Engineer, Privacy
  31. First observedSenior Software Engineer, Privacy
  32. First observedSenior Software Engineer, Privacy
  33. First observedSenior Software Engineer, Privacy
  34. First observedSenior Software Engineer, Privacy
  35. Posting updatedContract Software Engineer - WebCompat Tooling (Dashboards and Reporting), Firefox
  36. First observedSenior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)
  37. First observedSenior Contract Software Engineer (JavaScript) - Firefox
  38. First observedSenior Contract Web Developer - Firefox (Browser Engine)
  39. Posting updatedSenior Contract C++ / JavaScript Software Engineer (Browser Engine)
  40. First observedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  41. First observedContract Staff Software Engineer-Bug Burndown
  42. First observedContract Staff Software Engineer-Bug Burndown
  43. First observedSenior Security GRC Engineer
  44. First observedSenior Security GRC Engineer
  45. Posting updatedSenior Contract C++ / JavaScript Software Engineer (Browser Engine)
  46. First observedSenior Software Engineer, Firefox Security
  47. First observedSenior Software Engineer, Firefox Security
  48. First observedSenior Software Engineer, Firefox Security
  49. First observedSenior Software Engineer, Firefox Security
  50. First observedSenior Software Engineer, Firefox Security