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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: 27 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

83 all roles · newest first · page 1 of 2. Source duplicates are folded into their retained posting.

RoleStatusLocationFirst seenLast seenMarked no longer seen
Contract Staff Software Engineer - (Firefox) C++,Storage EncryptionC++Currently seenRemote UK26 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Finland22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote UK22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote France22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Sweden22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Netherlands22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Spain22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Belgium22 Oct 202627 Oct 2026—
Staff Site Reliability Engineer, Tools & SystemsPythonTypeScriptJavaScriptRustC+++1Currently seenRemote Germany22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Sweden22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Spain22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Belgium22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Finland22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote UK22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote France22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Germany22 Oct 202627 Oct 2026—
Senior Software Engineer, PrivacyPythonJavaScriptRustC++SQLCurrently seenRemote Netherlands22 Oct 202627 Oct 2026—
Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)JavaScriptC++Currently seenRemote France20 Oct 202627 Oct 2026—
Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)JavaScriptC++Currently seenRemote UK20 Oct 202627 Oct 2026—
Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)JavaScriptC++Currently seenRemote Germany20 Oct 202627 Oct 2026—
Contract Staff Software Engineer - (Firefox) C++,Storage EncryptionC++Currently seenRemote Germany20 Oct 202627 Oct 2026—
Contract Staff Software Engineer-Bug BurndownJavaScriptCurrently seenRemote UK20 Oct 202627 Oct 2026—
Contract Staff Software Engineer-Bug BurndownJavaScriptCurrently seenRemote Germany20 Oct 202627 Oct 2026—
Senior Security GRC EngineerPythonSQLCurrently seenRemote UK16 Oct 202627 Oct 2026—
Senior Security GRC EngineerPythonSQLCurrently seenRemote Germany16 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Netherlands15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Spain15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Belgium15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Finland15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote UK15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Sweden15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote France15 Oct 202627 Oct 2026—
Senior Software Engineer, Firefox SecurityJavaScriptRustC++Currently seenRemote Germany14 Oct 202627 Oct 2026—
Contract Staff Software Engineer-Bug BurndownJavaScriptNo longer seenRemote Canada; Remote Germany; Remote UK07 Oct 202608 Oct 202609 Oct 2026
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Spain29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote; Remote Germany29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Finland29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Germany29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Sweden29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Netherlands29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote Belgium29 Sept 202627 Oct 2026—
Senior Security Engineer - SecOpsAWSAzureGCPCurrently seenRemote UK29 Sept 202627 Oct 2026—
Staff Software Engineer, Web Application ServicesPythonJavaScriptRust.NETC+++1Currently seenRemote; Remote 27 Sept 202627 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 Contract C++ / JavaScript Software Engineer (Browser Engine)JavaScriptC++Currently seenRemote Belgium; Remote Denmark; Remote Finland; Remote France; Remote Netherlands; Remote Poland22 Sept 202627 Oct 2026—
Senior Software Engineer, Add-OnsNo longer seenUK17 Sept 202617 Sept 202621 Sept 2026
Senior Software Engineer, Add-OnsPythonTypeScriptMySQLGCPKubernetesCurrently seenRemote Netherlands16 Sept 202627 Oct 2026—
Senior Software Engineer, Add-OnsPythonTypeScriptMySQLGCPKubernetesCurrently seenRemote Germany16 Sept 202627 Oct 2026—
Senior Software Engineer, Add-OnsPythonTypeScriptMySQLGCPKubernetesCurrently seenRemote France16 Sept 202627 Oct 2026—
Senior Software Engineer, Add-OnsPythonTypeScriptMySQLGCPKubernetesCurrently seenRemote UK16 Sept 202627 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
2026-103420

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

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

  1. Marked no longer seenContract Software Engineer - WebCompat Tooling (Dashboards and Reporting), Firefox
  2. Posting updatedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  3. First observedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  4. First observedStaff Site Reliability Engineer, Tools & Systems
  5. First observedStaff Site Reliability Engineer, Tools & Systems
  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 observedSenior Software Engineer, Privacy
  13. First observedSenior Software Engineer, Privacy
  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. Posting updatedContract Software Engineer - WebCompat Tooling (Dashboards and Reporting), Firefox
  21. First observedSenior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)
  22. First observedSenior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)
  23. First observedSenior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)
  24. Posting updatedSenior Contract C++ / JavaScript Software Engineer (Browser Engine)
  25. First observedContract Staff Software Engineer - (Firefox) C++,Storage Encryption
  26. First observedContract Staff Software Engineer-Bug Burndown
  27. First observedContract Staff Software Engineer-Bug Burndown
  28. First observedSenior Security GRC Engineer
  29. First observedSenior Security GRC Engineer
  30. Posting updatedSenior Contract C++ / JavaScript Software Engineer (Browser Engine)
  31. First observedSenior Software Engineer, Firefox Security
  32. First observedSenior Software Engineer, Firefox Security
  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. Marked no longer seenContract Staff Software Engineer-Bug Burndown
  40. Posting updatedContract Staff Software Engineer-Bug Burndown
  41. First observedContract Staff Software Engineer-Bug Burndown
  42. Posting updatedStaff Operations Engineer
  43. Posting updatedSenior Software Engineer, Add-Ons
  44. Posting updatedSenior Security Engineer - SecOps
  45. Posting updatedStaff Product Engineer, Enterprise AI
  46. First observedSenior Security Engineer - SecOps
  47. First observedSenior Security Engineer - SecOps
  48. First observedSenior Security Engineer - SecOps
  49. First observedSenior Security Engineer - SecOps
  50. First observedSenior Security Engineer - SecOps