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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: 28 Oct 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.

54
Current roles
29
Past roles
83
Roles recorded
0
Reappearances recorded

Roles advertised

29 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
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

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
2026-103420

Technologies in current roles

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

JavaScript · 32C++ · 31Python · 28Rust · 25TypeScript · 17GCP · 16SQL · 10Kubernetes · 9AWS · 8Azure · 8MySQL · 8Terraform · 8

Observation timeline

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

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