Senior Software Engineer, Privacy

Company shown to members 🔒 · Remote · Germany, France, Belgium +1 only

Germany, France, Belgium +1 only4+ years required€56K–74K/yrPublished 22 October 2026Check carefully

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First recorded by Psst: 24 October 2026. Your first 3 jobs are free to apply to (the first right away, 2 more with your email). After that, the company and the apply link are for Psst members, from $4.99 for 7 days.

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The 20-second read

Experience
4+ years required
Where you can live
Germany, France, Belgium +1 only
Skills and tools
sql, python, social media, javascript
Degree or licence
Mentioned (bachelor's)

Read from the ad by Psst's rules. Check the full ad below before applying.

Job details

Where you can work
Germany, France, Belgium, Finland
Employment type
Not stated by the employer
Advertised pay
€56K–74K/yr
Experience
4+ years required
Employer publication date
22 October 2026
First recorded by Psst
24 October 2026
Last checked at the source
10 November 2026

About the job

Why the company?

The company 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 the company Corporation is wholly owned by the non-profit 501(c) the company 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.

About this team and role

Are you passionate about Privacy Protections and the Open Web? Do you want to ship software to a large user base? Do you want your contributions to have a positive impact on the world?  Do you want to advance current browser architecture to make the web a safer place for users?

The company exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and restricted. We are looking for a Senior Software Engineer to support the Privacy Team to advance the Firefox Web Platform.

What you'll do

  • Implement Privacy-improving, anti-tracking and threat intelligence protection into the Firefox web browser to mitigate user tracking and phishing.
  • Implement architectural improvements into Gecko, the browser engine underlying Firefox.
  • Build performant, low-latency, and maintainable C++, JavaScript and Rust code
  • Work as part of a geographically distributed team in an asynchronous manner (mostly Europe and US-East).

What you'll bring

  • Bachelor's degree in computer science, engineering, or a related program; or equivalent work experience.
  • At least 4 years of experience with programming in C++ and Rust, with a strong background in memory safety, multi-threaded system architecture, or raw data stream manipulation.
  • Proven ability to onboard quickly, deliver and improve complex software projects.
  • Proven track record of independently scoping and landing complex features within tight release windows.
  • Excellent written and verbal communication skills. You can validate your progress and decisions and communicate them clearly.

Bonus Points

  • You have already contributed to the the company mission and the codebase.
  • Experience working within the browser space (Gecko, Chromium, WebKit) or web engine runtime abstractions.
  • Experience or high interest in designing or leveraging ML pipelines to automate internal developer workflows.
  • Deep understanding of web architecture, the privacy/security model of the web, and client-side data structures.
  • Knowledge of basic statistical modeling.
  • Proficiency with Python and SQL.

What you’ll get

  • Generous performance-based bonus plans to all eligible employees - we share in our success as one team
  • 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 the company

The company 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 the company, 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

The company 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 orientation s, 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 [link for members] 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.  The company 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: R3260

Hiring Ranges

Remote Belgium

€56.000 — €74.000 EUR

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