Mozilla is hiring Privacy, Networking, & Research Engineering Interns onto our technical teams throughout the world. Our headquarters are based in the Bay Area, but we have positions in our offices in Toronto and Berlin!
We are engineers, designers, makers, and problem solvers. We work in the fishbowl known as the open source community, with a clear focus on making the Web better. Working with us, you’ll help build interesting new features, improve Mozilla products, and explore new product directions. To be part of the team, we ask that you be user centered, technically-curious, and excited to be moving the Mozilla mission forward.
As a part of our Mozilla Internship Program, you will:
- Impact challenging projects influenced by our family of Mozilla products in and outside of the Firefox web browser (accessibility, voice design, developer tools, mobile, and mixed reality), Rust, Pocket, and more
- Be mentored by a fellow teammate and someone who shares the same values
- Do real work on real projects and make contributions that will impact hundreds of millions of users
- Participate in social events with your fellow interns (amusement parks, ice cream and boba socials, board game nights, escape rooms, and painting parties)
- Meet with Mozilla leaders including our CEO, Executive Chairwoman, CPO, Chief R&D Officer, CMO, and Executive Foundation Director
- Present your work to Mozilla leaders and fellow team members
- Market competitive pay
- Catered lunches, snacks, and drinks
- Housing service or housing stipend provided
- Flights and ground transportation to and from internship
- Work visas sponsored
- Attendance at our bi-annual All Hands Meeting
Application and Interview Process
- Recruiting begins in September, and we hire on a rolling basis through March. While there is no set application deadline, we do have a limited number of positions open each year, so please apply early!
- Locations include Mountain View, San Francisco, Toronto, Berlin, and Paris. Please refer to our internship listings for specific locations offered by position.
- Process starts with a resume review followed by a HackerRank challenge (technical) or document submission (non-technical).
- Upon passing, you will partake in two technical and behavioral interviews with team members (coding and situational questions are fair game) followed by a hiring manager interview and ultimately, an offer decision.
We have 8 positions open on the following teams:
Privacy, Networking & Security Intern - Project: Anti-Phishing UI (Toronto, Canada)
Firefox Privacy & Security Engineering team builds and maintains Firefox features and services to protect the security and privacy of Firefox users. We are looking for an intern to help us with our anti-phishing efforts as there is ongoing research within Mozilla. We intend to find better ways to detect phishing sites - this may include something such as detecting and surfacing confusing urls disguised as trusted websites.
Privacy, Networking & Security Intern - Project: Enhance Download Protection (Berlin, Germany)
Privacy, Networking & Security Intern - Project: Improve Necko Test Infrastructure (Berlin, Germany)
Privacy, Networking & Security Intern - Project: Improving Performance of Client-Side Personal Data Breach Database Use (San Francisco, CA and Mountain View, CA)
As we look to increase the ways we can protect a user’s personal data, the potential for negatively impacting performance in Firefox increases. Potential solutions for this could be as simple as using cascading bloom filtering on local data stores, or as complex as anonymized, server-based secure verification of data in a set.
The goal is to develop a methodology by which we can scale (or at least assure) performant data checking as we expand our ability to protect the various personal data of end users.
Privacy, Networking & Security Intern - Project: Integrate HTML Sanitizer (XSS-Filter) into Firefox (Mountain View, CA)
According to OWASP, two thirds of all web applications are vulnerable to Code Injection Attacks. Since XSS still accounts for the vast majority of security bugs within web applications, Firefox should provide an API that allows sanitizing HTML strings. Not only could this sanitizer be exposed to web applications but it could also be consumed for sanitizing our own applications. To start, we could use the ruleset of ‘DOMPurify’, an HTML and JS sanitizer which has been proven to provide strong mitigations against XSS.
Privacy, Networking & Security Intern - Project: Restricting DOM Access to Certain Attributes to Avoid Data Exfiltration (Mountain View, CA)
In more detail, imagine a top-level document foo.com which loads a script using <script src="bar.com> into the same execution context of foo.com. As a consequence, bar.com gets full access to the DOM and is able to exfiltrate confidential user data. In a simplified attack scenario the attacker would traverse the entire DOM and pick values of interest (credit card numbers, social security numbers, etc). By performing a GET request to an attacker controlled server, the attacker could send the exfiltrated user data as a payload. On the server, the attacker could then re-assembles the harvested information.
Simply blocking such scripts maps to the security/privacy guarantees that tracking protection offers. Within this project we would allow potentially malicious scripts to load, but observe and evaluate all DOM access. A monitoring system in the DOM-Bindings would allow us to better quantify how often such exfiltration attempts happen in the wild, and hence provide a better understanding as to how to stop such exfiltration attempts.
Security Engineering Intern (San Francisco, CA)
Firefox Operations Security protects the core services and release engineering infrastructures Mozilla relies on to build, ship and run Firefox. The intern would be working on the Fraud Detection pipeline, implementing security controls to catch malicious behavior in our core services.
- Must be currently enrolled in a Bachelor’s, Master’s or PhD degree program in Security Engineering, Computer Science, Computer Engineering, or a related technical discipline with a focus on security and privacy
- Must be graduating December 2020 and onward
- Familiarity with networking, web security, and web privacy concepts
- C / C++
- Familiarity with NodeJS ecosystem
- Experience with algorithmic efficiency or cryptanalysis
- Understanding of Secure System Development
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. Join us and become part of our mission to promote openness, innovation and opportunity online.
Mozilla is committed to Equal Employment Opportunity throughout our recruiting and hiring process and is dedicated to increasing diversity in our workplace.