Contract Staff Software Engineer-Bug Burndown

Mozilla
Germany
Remote

Who this role is best for

Strong fit for candidates who debug real-world site breakage and use AI tooling to improve browser compatibility, with experience in remote work and a focus on web development.

Best fit for

  • Candidates with experience debugging real-world site breakage and using AI for web compatibility fixes
    — “comfort debugging real-world site breakage”
  • Professionals familiar with browser devtools and able to work effectively in a remote environment
    — “Fluent with browser devtools and cross-browser diagnosis”

Things to consider

  • The role requires working with a large queue of reported breakages and prioritizing fixes
    — “You turn a large queue of reported breakages into diagnosed, actionable, or fixed bugs”
  • Gecko knowledge is not mandatory but is a significant advantage for this role
    — “Gecko knowledge is a strong plus (but can be taught)”

How to stand out

  • Highlight your experience with AI-assisted debugging and prioritization of bug backlogs
    — “Write simple fixes (AI-assisted) and land them”
  • Showcase your ability to triage and reproduce site-breakage reports systematically
    — “Reproduce and triage incoming site-breakage reports”
  • Demonstrate your understanding of WebCompat and web standards through relevant projects or contributions
    — “Prior WebCompat or web-standards experience”
Pace · Fast PacedCollaboration · LowAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • reduce Firefox’s WebCompat bug backlog
  • write interventions or simple fixes
Typical background
web developmentAI tooling

Skills & requirements

Required

Web DevelopmentHTMLCSSJavaScriptBrowser DevtoolsAI Tooling

Preferred

Gecko KnowledgeWebcompatWeb-standards

Stack & domain

HTMLCSSJavaScriptBrowser DevtoolsAI Tooling

About the role

Original posting from Mozilla via Greenhouse

You will help reduce Firefox’s WebCompat bug backlog by finishing or verifying the diagnosis of the long tail of site-breakage bugs, and by writing interventions or simple fixes (often with AI assistance). You turn a large queue of reported breakages into diagnosed, actionable, or fixed bugs.

Responsibilities

Finish diagnosing, or verify the diagnosis of, long-tail WebCompat bugs.

Write WebCompat interventions where appropriate.

Write simple fixes (AI-assisted) and land them.

Reproduce and triage incoming site-breakage reports.

Required qualifications

Solid web development (HTML, CSS, JavaScript) and comfort debugging real-world site breakage.

Fluent with browser devtools and cross-browser diagnosis.

Comfortable using AI tooling to speed up diagnosis and fixes.

Preferred

Gecko knowledge is a strong plus (but can be taught).

Prior WebCompat or web-standards experience.

Source: Mozilla careers (Greenhouse)

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