software engineer

Mozilla Corporation
Madrid, Spain
23 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience required
6 years minimum
Compensation
€75,000.0 - €100,000.0
Working hours
Regular working hours
Job source

Tech stack

Clean Code Principles JavaScript (Programming Language) Microsoft Windows Android Software Development Apple IOS Apple Mac Systems C++ (Programming Language) Code Review Software Debugging Linux Virtual Private Networks (VPN) Python (Programming Language)
+10 more
Network Protocols Qt (Software) Software Engineering Tcpdump Wireshark TypeScript VPN Clients Git Free and Open-Source Software Golang

Job description

Mozilla VPN is seeking an experienced software engineer to join our fully remote, global engineering team. In this role, you will contribute to the suite of products that make up the Mozilla VPN project, including browser extensions, browser integrations, and the Mozilla VPN client-a cross-platform application available on Windows, macOS, Linux, iOS, and Android. You will be responsible for implementing new features as well as improving the performance and the reliability of existing functionality. Additionally, you will have the opportunity to be at the forefront of innovative, challenging, and technically complex initiatives. What you’ll do: Drive the architecture, development, and optimization of the Mozilla VPN client across platforms (Windows, macOS, Linux, iOS, Android). Work closely with cross functional colleagues, providing technical insight to drive feature development. Maintain high-quality code, enforce security best practices, and mentor engineers by providing comprehensive and insightful code reviews. Triage, debug and resolve software defects

Requirements

6+ years of software engineering experience Expert level proficiency in C/C++ Expertise in networking protocols and privacy and security best practices Extensive knowledge of core OS concepts of Windows or Mac Experience developing cross-platform applications (Windows, macOS, Linux, iOS, Android) Experience debugging network related problems with Wireshark, tcpdump, or similar tools Excellent communication skills and experience mentoring engineers Bonus points: Experience developing cross platform applications with Qt Proficiency in any of the following: Rust, Go, Python, Javascript, TypeScript, Git Open-source contributions to networking or VPN-related projects Experience implementing or improving application observability

Benefits & conditions

Generous performance-based bonus plans to all regular 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 hiringaccommodation@mozilla.com 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: C ReqID: R2759 #LI-REMOTE Hiring Ranges: Remote Spain€75.000-€100.000 EUR Inscribirse en esta oferta Recibir ofertas similares por correo electrónico Al crear una alerta, aceptas nuestros Términos y condiciones y Política de privacidad, y el uso de cookies.

About the company

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, and Pocket, a service for keeping up with the best content online. 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.

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.adzuna.es

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

43 sec

Software engineering journey and local Manchester roots

Jonathan Tang · Coffee With Developers

6:21 min

Investigating push inefficiencies with upstream Git experts

Jonathan Creamer · Coffee With Developers

52 sec

Running persistent Linux environments directly on Windows

Ben Breard Ben Breard · World Congress 2025

1:08 min

Building solutions with open source GoLang infrastructure tools

Jad Wahab · LIVE

2:08 min

Professional background and early cross-platform mobile experiences

Petar Marijanović · LIVE

56 sec

Favorite git commands and the importance of patch commits

Eileen Uchitelle Eileen Uchitelle +1 · Coffee With Developers

Videos

See all

Related articles

See all