Senior software engineer, firefox security Work, Jobs in Remote (with Salaries)

Senior Software Engineer, Firefox Security
Mozilla —Remote
- £66,000 - £87,000 a year
- Remote
- C++
- APIs
- Communication skills
- Employee assistance programme
- Referral programme
3h
Senior Software Engineer (Go)
Form3 —Remote
- £160,000 - £240,000 a year
- Remote
- Azure
- Java
- AWS
Senior System Engineer
Leidos —Remote
- £61,500 - £78,800 a year
- Full-time
- Remote
- Engineering
- Bachelor's degree
- Organisational skills
- Annual leave
- Work from home
Senior Software Engineer, WebExtensions
Mozilla —Remote
- £66,000 - £87,000 a year
- Remote
- C++
- JavaScript
- Software development
- Employee assistance programme
- Referral programme
Senior or Staff Software Engineer, SRE/ Platform Team
OneSignal —Remote
- £100,000 - £145,000 a year
- Full-time
- Azure
- SQL
- AWS
Senior Software Engineer
GitHub, Inc. —Remote
- £76,900 - £142,900 a year
- Full-time
- Remote
- Doctoral degree
- Computer Science
- Engineering
Senior Software Engineer, Elasticsearch
GitHub, Inc. —Remote
- £76,900 - £142,900 a year
- Full-time
- Remote
- Management
- Computer Science
- Bachelor's degree
Senior Manager, Firefox Mobile Test Engineering
Mozilla —Remote
- £134,000 - £178,000 a year
- Full-time
- Remote
- Communication skills
- Teaching
- Employee assistance programme
- Referral programme
Senior Software Engineer
Nerdio —Remote
- Full-time
- Remote
- Azure
- Master's degree
- APIs
- Annual leave
Quick apply
13d
Senior Software Engineer
Capita —Remote
- Full-time
- Remote
- Azure
- Mentoring
- Communication skills
- Employee discount
Senior Software Engineer - Engineering Workflow and CI
Mozilla —Remote
- £65,000 - £87,000 a year
- Remote
- Data analysis skills
- SQL
- AWS
- Employee assistance programme
- Referral programme
Senior Software Engineer
Heritage Holdings —Remote
- Remote
- English
- JavaScript
- APIs
Quick apply
Senior Site Reliability Engineer
Honeycomb.io —Remote
- £127,670 - £150,200 a year
- Remote
- AWS
- Project management
- Communication skills
- Annual leave
Senior Software Engineer - Machine Learning (f/m/d)
Contentful —Remote
- Full-time
- Remote
- Azure
- Master's degree
- AWS
- Annual leave
Senior Application Security Engineer (SCA/SAST)
Trimble —Remote
- Full-time
- Remote
- Azure
- Computer Science
- Java
Senior Backend Engineer
Monzo —Remote
- £105,000 - £135,000 a year
- Part-time
- Remote
- Engineering
- Java
- AWS
- Flexible schedule
Senior Software Engineer
Vladimer Avdalov Technologies Ltd —Remote
- £65,000 - £110,000 a year
- Full-time
- Remote
- English
- AWS
- Bachelor's degree
- Work from home
Quick apply
4d
Senior Software Engineer (web)
Optima Health —Remote
- Up to £56,000 a year
- Full-time
- Remote
- Azure
- SQL
- AWS
- Paid training
- Annual leave
1d
Senior QA Engineer
Arrive —Remote
- Hybrid work
- Maintenance
- SQL
- APIs
Quick apply
Senior Software Engineer
Wiley —Remote
- £44,200 - £63,400 a year
- Full-time
- Remote
- C++
- Software development
- APIs

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Senior Software Engineer, Firefox Security

Mozilla -
Remote

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Job details

£66,000 - £87,000 a year
3 hours ago

Benefits

Employee assistance programme
Referral programme

Qualifications

Rust (programming language)
PKI
C++
C
APIs
Root cause analysis
Communication skills
Debugging

Full job description

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.

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.

What you’ll do:

Advance Firefox's security architecture and cryptography stack: Contribute to improvements in Firefox's core security systems, with a focus on cryptographic protocols, WebPKI, and security-sensitive web APIs. Help implement and maintain security features that support the evolution of public key infrastructure on the web.
Design and implement web platform security features: Develop and ship web platform features in collaboration with teammates and the broader web community. Contribute to standards-based, secure, and interoperable implementations across Firefox.
Improve browser reliability, performance, and resource efficiency: Investigate and resolve issues impacting stability, correctness, and performance. Analyze and improve memory usage and efficiency within a complex, multi-threaded browser environment.
Collaborate on security initiatives: Partner with engineers across teams to identify, prioritize, and address security issues. Participate in debugging, root cause analysis, and implementation of effective long-term solutions.
Contribute to technical design and planning: Participate in technical discussions, design reviews, and project planning for security-related initiatives. Help evaluate tradeoffs and contribute to engineering decisions within your area of work.

What you’ll bring:

Strong software engineering and security fundamentals: Experience in software engineering, with proficiency in C/C++ and a solid understanding of security principles, including cryptographic protocols and implementations.
Experience building and maintaining complex software systems: Ability to contribute to the design, implementation, testing, and maintenance of software in large-scale or security-sensitive environments.
Strong debugging and problem-solving skills: Expertise in diagnosing and resolving issues in multi-threaded, cross-platform native applications, including performance and memory-related challenges.
Collaborative and effective communicator: Ability to work effectively with distributed teams, communicate technical concepts clearly, and collaborate constructively to solve problems.
Growth mindset and willingness to learn: Demonstrated curiosity and desire to deepen expertise in browser security, cryptography, and systems programming while continuously improving engineering skills.
Web platform and modern systems experience: Familiarity with web technologies and interest or experience in Rust. Comfortable working within large, complex, multi-language codebases.

What you’ll get:

Generous performance-based bonus plans to all eligible employees - we share in our success as one team
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
Quarterly all-company wellness days where everyone takes a pause together
Country specific holidays plus a day off for your birthday
One-time home office stipend
Annual professional development budget
Quarterly well-being stipend
Considerable paid parental leave
Employee referral bonus program
Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

About Mozilla

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. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at [email protected] to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Group: D

#LI-REMOTE

Req ID: R3155

Hiring Ranges:

Remote UK

£66,000 - £87,000 GBP

Apply Now

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