INTERNSHIP DETAILS

Necko Student Worker

CompanyMozilla
LocationGermany
Work ModeOn Site
PostedJuly 16, 2026
Internship Information
Core Responsibilities
Improve Firefox's networking stack and network-related APIs such as Fetch and WebTransport. Design and implement new web platform features and networking protocols in collaboration with standards communities.
Internship Type
full time
Company Size
1775
Visa Sponsorship
No
Language
English
Working Hours
40 hours
Apply Now →

You'll be redirected to
the company's application page

About The Company
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.
About the Role

Hiring Ranges: 

Germany Locations: €28,00 EUR per hour.

To learn more about our Hiring Range System, please click this link.


The Opportunity

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. 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 everyone. 

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 60,000+ 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. 

The Gecko networking team is looking for skilled developers to work on a first-class networking stack and improve web experiences for millions of Firefox users. The team is working on the core of the browser that moves the web. The fundamental network protocols and features like HTTP, QUIC, caching and DNS are our responsibility. We strive to provide a performant and secure browsing experience for the users. Furthermore we work on advanced web platform networking API like Fetch and WebTransport. We improve our existing implementations and together with the broader community we advance the web through the evolution of relevant standards.

Mozilla isn’t just a great place to work. It’s an experience you’ll carry with you throughout your career! As part of our internship program, you’ll have the opportunity to be mentored one-on-one by somebody brilliant, to impact the projects you’ll collaborate on, and to never be bored. Ever! From the passionate people you’ll learn from, to the chances you’ll have to make the Web a better place, your time with Mozilla will be unlike any other.

Below is a small snapshot of the work we do to give you an idea about some of the big things you could do at Mozilla.

About The Team and Role

We strive to provide a performant and secure browsing experience for users and stable/easy to use Networking API's to our developers. We improve our existing implementations and together with the broader community we advance the web through the evolution of relevant standards.

What You’ll Get To Do 

  • Improve Firefox’s web browsing experience with a particular focus on the networking stack and network-related APIs, e.g., Fetch, WebTransport, etc.
  • Design and implement new web platform features and networking protocols in collaboration with the web and internet standards community.
  • Debug and fix correctness and performance problems in our multi-threaded codebase.
  • Debug platform-specific networking issues.
  • Improve Firefox’s stability and correctness.
What You Bring
  • Experience with programming in Rust and/or C/C++ and you’re familiar with the concepts of memory safety, test-driven development, data analysis and practices for secure software development.
  • You speak English fluently and enjoy conducting software engineering work in the open.
  • Previous experience with networking and/or systems programming is a bonus!
  • You are enrolled in a university in Germany and are willing to occasionally visit our Office in Berlin
  • Commitment to our values:
    • Welcoming differences
    • Being relationship-minded
    • Practicing responsible participation
    • Having grit

About Mozilla 

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.  We’re not a normal tech company. The things we create prioritize people and their privacy over profits. We exist to make the internet a healthier,  happier place for everyone

Commitment To Diversity, Equity and Inclusion

Mozilla believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion 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 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.

Key Skills
RustC++Memory SafetyTest-Driven DevelopmentData AnalysisSecure Software DevelopmentNetworkingSystems ProgrammingEnglish FluencyMulti-threaded Debugging
Categories
SoftwareTechnologyEngineering
Benefits
One-on-one Mentorship