About This Opportunity

<div class="gmail_default" style="font-size: small;"> <div> Why Mozilla? &l

This listing is organized to help candidates compare the role, location, experience level and application source before visiting the employer or source website. Final eligibility, salary, selection process and deadlines should be confirmed from arbeitnow.co.uk.

Skills And Responsibilities

<div class="gmail_default" style="font-size: small;"> <div> Why Mozilla? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years
We make pioneering brands like Firefox, the privacy-minded web browser
Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies
Our work focuses on diverse areas including AI, social media, security and more
And we’re doing this while never losing our focus on our core mission – to make the internet better for people.&nbsp; The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation
This means we aren’t beholden to any shareholders — only to our mission
Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.&nbsp; What you’ll do: <ul> <li style="font-weight: 400;">Design, build and implement security and hardening features for enterprise users: Design, implement, test, and ship cutting-edge security features that strengthen Firefox’s security posture.</li> <li style="font-weight: 400;">Advance Firefox’s security architecture across multiple operating systems: Contribute to and drive cutting-edge improvements to Firefox’s core security posture, by building privilege isolation and moving trust boundaries or Strengthen Firefox’s security architecture: Improve Firefox’s core security mechanisms including cryptographic protocols, WebPKI, and security-sensitive web APIs.</li> <li style="font-weight: 400;">Contribute to our security initiatives: Work across teams to investigate security issues, identify root causes, and deliver robust, maintainable fixes.</li> <li style="font-weight: 400;">Improve browser reliability and performance: Diagnose and resolve issues affecting stability, correctness, performance, and memory usage in a complex, multithreaded environment.</li> </ul> What you’ll bring: <ul> <li style="font-weight: 400;">Systems programming experience and security knowledge: 3+ years of experience in low-level software engineering, strong proficiency in C and/or C++, and a solid understanding of security fundamentals.</li> <li style="font-weight: 400;">Debugging and problem-solving skills: Experience diagnosing and resolving issues in multithreaded, cross-platform native applications, including memory and performance challenges.</li> <li style="font-weight: 400;">Web platform and modern systems experience: Familiarity with web technologies (HTML, CSS, JavaScript) and interest or experience in Rust; ability to work effectively within large, complex, multi-language codebases.</li> <li style="font-weight: 400;">Effective collaboration and communication: Experience working with distributed teams and communicating technical ideas clearly in writing and conversation.</li> </ul> What you’ll get: <ul> <li style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees - we share in our success as one team</li> <li style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</li> <li style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</li> <li style="font-weight: 400;">Country specific holidays plus a day off for your birthday</li> <li style="font-weight: 400;">One-time home office stipend</li> <li style="font-weight: 400;">Annual professional development budget</li> <li style="font-weight: 400;">Quarterly well-being stipend</li> <li style="font-weight: 400;">Considerable paid parental leave</li> <li style="font-weight: 400;">Employee referral bonus program</li> <li style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc
- varies by country)</li> </ul> About Mozilla&nbsp; Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled
When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere
And you give us a chance to make a difference in your life every single day

How To Apply

Read the summary, experience requirement, location and deadline on this page.
Open the official application/source link for the final employer instructions.
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Eligibility Notes

Candidates should compare their qualification, experience, skills, location preference and availability with the official job description. If a requirement is not clearly mentioned here, treat it as employer-specific and verify it on the source page.

Candidate Guidance

Senior Software Engineer, Firefox Security at mozilla should be evaluated by matching the role title, category, location and experience requirement with your resume before applying.

Candidate fit: this IT Jobs is best for applicants who can show relevant skills, projects or work experience connected to the role.
Experience check: compare your profile with 3+ yrs; if you are a fresher, highlight projects and internships, and if experienced, show measurable work outcomes.
Location/work mode: verify whether Remote is onsite, hybrid, remote, rotational shift or relocation-based on the official source page.
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Before Applying, Check

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ManaCoding Jobs is a job-discovery platform. We organize role information and source links, but candidates should verify final details on the official employer or source page before applying. Salary is shown only when available from the listing/source; otherwise it is marked as not disclosed.