Senior Contract C++ / JavaScript Software Engineer (Browser Engine)
Belgium · Remote · Senior · Contract · English
€3,800–6,610estimate, a month
- C++
- JavaScript
- Browser-engine testing
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Mozilla
Hiring 17 people right now, mostly senior roles
Mozilla hires in waves: 30 ads in October, 17 in November, about 14 a month now.
Work at Mozilla? Claim this page
- No Finnish needed in 100 of 100 ads
- Senior first: 17 of 17 open roles, no junior ones
- All remote in every ad
- Hiring is growing More ads lately
17 open jobs at Mozilla
16 full-time, 1 contract€3,000Pay on one scale, a month€11,000
Senior Security Engineer, SecOps
Finland · Remote · Senior · English
€5,667–7,583stated in the ad, a month
- Security incident response
- SIEM
- ELK
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Senior Software Engineer
Finland · Remote · Senior · English
€3,793–5,057stated in the ad, a month
Gold tick: the market for this role, €5,600
- C
- C++
- Rust
NewView
Staff Software Engineer, Tools & Systems
Germany · Remote · Senior · English
€6,750–9,000stated in the ad, a month
Gold tick: the market for this role, €5,600
- Python
- JavaScript/TypeScript
- C++
NewView
Staff Site Reliability Engineer
Sweden · Remote · Senior · English
€7,853–10,471stated in the ad, a month
- Python
- JavaScript
- TypeScript
Updated 1 day agoView
Senior Software Engineer
Finland · Remote · Senior · English
€3,750–5,000stated in the ad, a month
Gold tick: the market for this role, €5,620
- C
- C++
- Rust
Updated 1 day agoView
Prefer to reach out directly? Website
Working there
Flexible work
- PayGood
- StabilityFair
- GrowthGood
- FlexibilityGood
Benefits and transparency are not scored yet. How we calculate this
Worked at Mozilla? Rate it in a minute. Your name is never shown.
Benefits are often named. The most common, cash bonus, is in 51 of 100 ads.
- Cash bonus51%
- Quarterly well-being stipend36%
- Paid parental leave33%
- Birthday day off30%
- One-time home-office stipend27%
- Employee referral bonus24%
One square is 1 in 100 ads.
How they hire: mostly full-time jobs.
98% full-time · 2% contract
What they ask for. Use these words in your application; bigger means more ads. Pick one to see the jobs that ask for it.
Salary data
€4,700 – €6,200/moMonthly
Middle 50%
Compare salaries by role across FinlandBased on 28 job listings
Mozilla salaries by role
Advertised monthly pay for its most common roles, against the same role across Finland.
| Role | Ads with pay | Pays | vs Finland |
|---|---|---|---|
| Software Engineer | 20 | €4,670–6,170 | −7% |
| Mobile Product Manager | 4 | €4,630–6,170 | +0% |
| Product Manager | 3 | €4,670–6,170 | −7% |
Bar: what Mozilla advertises. Tick: Finland median for the role. Medians of ads that state pay. The tick is what the role pays in Finland, the same figure as its salary page (Statistics Finland where the occupation is covered). "vs Finland" compares the low end with the same role's ads at all employers.
Sources: JobCrawls analysis of employers' own job listings; Statistics Finland, earnings by occupation (15au), raised to today by JobCrawls (CC BY 4.0) · Data and reuse
Who they hire
Senior people
- Director1
- Manager3
- Senior84
- Mid-level23
- Remote100%
Similar employers
Also hiring Software Engineer
- Canonical232 open jobs · Also hires: Software EngineerPay rarely stated
- G2i15 open jobs · Also hires: Software EngineerPay rarely stated
- Aiven23 open jobs · Also hires: Software EngineerPay rarely stated
- Tieto60 open jobs · Also hires: Software EngineerMedian pay €4,200–5,500
Same industry, or hiring for the same roles. Median advertised pay on one scale.
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Employer overview
Mozilla appears in JobCrawls’ Finnish labour-market dataset based on job listings we aggregate for Finland. This does not imply where the company is headquartered. JobCrawls Employer Score: A. Hiring volume has been trending up in recent months.
Top roles in listings: Software Engineer, Crash Reporting Integration Engineer, Mobile Product Manager. Median salary band from listings: €4,700 – €6,200/mo. Share of remote job postings: about 100%.
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In running text
Mozilla (JobCrawls) https://www.jobcrawls.com/en/employer/mozilla
Reference
JobCrawls (2026). Mozilla. https://www.jobcrawls.com/en/employer/mozilla
HTML link
<a href="https://www.jobcrawls.com/en/employer/mozilla">Mozilla</a> (JobCrawls)
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Structured data for this employer
| Metric | Value |
|---|---|
| objectID | Mozilla |
| companyName | Mozilla |
| hiringTrend | growing |
| employerScore | 70.55 |
| remotenessRemotePct | 100 |
| remotenessHybridPct | 0 |
| Metric | Value |
|---|---|
| payScore | 0.9812944395258834 |
| flexibilityScore | 1 |
| stabilityScore | 0.4894855535834467 |
| growthScore | 0.8783783783783784 |
| Metric | Value |
|---|---|
| medianSalaryMin | 4667 |
| medianSalaryMax | 6167 |
| salaryPercentile25 | 3793 |
| salaryPercentile75 | 7250 |
| salarySampleSize | 28 |
| Category | Job postings (sample) |
|---|---|
| Remote | 111 |
| Hybrid | 0 |
| Onsite | 0 |
| total | 111 |
| Category | Job postings (sample) |
|---|---|
| Software Engineer | 30 |
| Crash Reporting Integration Engineer | 8 |
| Mobile Product Manager | 7 |
| Graphics Engineer | 6 |
| Product Manager | 6 |
| CI and Workflow Software Engineer | 5 |
| Software Engineer, DOM Core | 5 |
| Desktop Integration Engineer | 4 |
| Senior Software Engineer | 4 |
| Software Engineer, Privacy | 4 |
| Backend Engineer | 3 |
| Site Reliability Engineer | 3 |
| Software Engineer (Localization) | 3 |
| Software Engineer, Add-Ons | 3 |
| VPN Software Engineer | 3 |
| Director of Product, Firefox Growth | 2 |
| Localization Technical Program Manager | 2 |
| Security Engineer | 2 |
| Security Incident Responder | 2 |
| Security Operations Engineer | 2 |
| Software Security Engineer | 2 |
| Browser Engine Software Engineer | 1 |
| Machine Learning Engineer | 1 |
| Senior Staff Product Manager | 1 |
| Software Engineer, Enterprise Browser | 1 |
| Software Engineer, Tools & Systems | 1 |
| Category | Job postings (sample) |
|---|---|
| Remote - Finland | 111 |
| Remote - Germany | 109 |
| Remote - Belgium | 106 |
| Remote - Netherlands | 105 |
| Remote - Spain | 104 |
| Remote - Sweden | 104 |
| Remote - France | 100 |
| Remote - Canada | 67 |
| Remote - UK | 59 |
| Remote - United Kingdom | 47 |
| Remote - Poland | 42 |
| Remote - US | 22 |
| Remote - Denmark | 7 |
| Remote - Australia | 5 |
| Remote - New Zealand | 5 |
| Remote - United States | 2 |
| Month | Job postings |
|---|---|
| 2023-10 | 7 |
| 2024-04 | 2 |
| 2025-05 | 6 |
| 2025-08 | 1 |
| 2025-09 | 2 |
| 2025-10 | 4 |
| 2025-11 | 17 |
| 2025-12 | 8 |
| 2026-01 | 8 |
| 2026-03 | 1 |
| 2026-04 | 2 |
| 2026-05 | 4 |
| 2026-06 | 3 |
| 2026-07 | 4 |
| 2026-08 | 5 |
| 2026-09 | 6 |
| 2026-10 | 30 |
| 2026-11 | 10 |