Mozilla

Contract Staff Software Engineer-Bug Burndown

Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

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.

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT CSS HTML Javascript Writing Mid level full-time

Likely questions

  1. Tell us about work you have done that is close to the Contract Staff Software Engineer-Bug Burndown role.
  2. How would you approach your first 30 days at Mozilla?
  3. Which of CSS, HTML and Javascript have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with CSS, HTML and Javascript.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Contract Staff Software Engineer-Bug Burndown role because I can bring practical experience in CSS, HTML and Javascript, learn the team quickly, and contribute to the outcomes Mozilla needs from this hire.

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