DOM Core Student Worker

Mozilla (View all Jobs)


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Interview Process

1. Deep-dive discussions on technical and mentorship problems solved in the past. No live coding. Total of 3 rounds.

Programming Languages Mentioned

C++, JavaScript

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Deadline for Applications: 5pm PST on January 27, 2023.

The Company

Our unique corporate structure guarantees that every decision we make upholds our mission: to make sure the internet stays available, safe, and welcoming to everyone. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.

Along with 20,000+ volunteer contributors and collaborators all over the world, 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.

The Opportunity

The DOM: Core team at Mozilla cares deeply about Firefox’s high-performing web rendering engine, Gecko. We aim for intelligent hardware utilization, excellent user interaction, continuous architecture hardening and web compatibility. We push the boundaries of what the web is capable of. We do this by delivering outstanding implementations in Firefox of the standardized APIs, such as DOM and  HTML

Our team is geographically-distributed. We work with the broader web community. Working in the open is the norm.

Are you passionate about Firefox and the open web? Do you want your contributions to have a positive impact on the world? Are you interested in learning how to design and implement an interoperable feature for millions of users? If so, we’d like to hear from you!

What You'll Get To Do

  • Write code and tests, read specifications, participate in specification discussions, and tackle problems with no clear solution.
  • Learn about a wide variety of problems and solutions across a large, mature codebase.
  • Work with driven, committed team members to bring the open web to people around the world.

What You Bring

  • Experience with programming in C/C++.
  • Basic knowledge of the modern web technologies (JavaScript, HTML, and/or CSS) .
  • Passions to learn new tools, techniques and programming languages.
  • Comfortable contacting people and driving discussions (requires good asynchronous written communication skills as well as good verbal communication skills in English).
  • Enrolled in a university in or around Berlin and are available to come to our offices during regular working hours depending on your schedule.

About Mozilla

Mozilla exists to ensure that the internet is 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 and inclusion

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 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 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.

Please mention No Whiteboard if you apply!
I'm a one-man team looking to improve tech interviews, and could use any support! 😄

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