Security Researcher Intern, Trust Engineering

Teamwork makes the stream work. Roku is changing how the world watches TV Roku is the #1 TV streaming platform in the U.S., Canada, and Mexico, and we've set our sights on powering every television in the world. Roku pioneered streaming to the TV. Our mission is to be the TV streaming platform that connects the entire TV ecosystem. We connect consumers to the content they love, enable content publishers to build and monetize large audiences, and provide advertisers unique capabilities to engage consumers. From your first day at Roku, you'll make a valuable - and valued - contribution. We're a fast-growing public company where no one is a bystander. We offer you the opportunity to delight millions of TV streamers around the world while gaining meaningful experience across a variety of disciplines. About this area At Roku, our Trust Engineering team is a close-knit group of passionate professionals. Our mission? To protect our customers, partners, devices, services, infrastructure, and data. We work collaboratively, sharing insights and expertise to stay ahead of the curve. Join us, and you’ll be part of a dynamic team that thrives on challenges and celebrates victories together. About the role Join Roku’s Trust Engineering team as a Security Researcher Intern, where your passion for security and technology will help drive our success. We offer a paid 12-week internship, starting in Summer 2026. As a Security Researcher Intern, you’ll be assigned a scoped project that strengthens our security posture. You will improve our firmware security tooling by enhancing CodeQL‑based static analysis, building coverage‑guided QEMU fuzzing harnesses, and owning an end‑to‑end research‑driven engineering project. What you’ll be doing Design and implement static analysis improvements: Extend CodeQL queries/extractors to cover new firmware components. Reduce noise via diff‑aware analysis, deduplication, and better handling of dead code. Make results more actionable for engineers (grouping, severity, exploitability hints). Build and enhance fuzzing and dynamic analysis: Prototype or extend QEMU‑based harnesses using frameworks such as AFL++ or Syzkaller. Add instrumentation and coverage reporting to guide corpus evolution and test effectiveness. Feed fuzzing results back into static analysis as new rules or patterns. Own a well‑scoped research‑plus‑engineering project from design through implementation, evaluation, documentation, and an end‑of‑internship presentation. We’re excited if you have Currently enrolled in a Bachelor, MS or PhD program in CS, CE, EE, or a closely related field. Strong programming skills in C/C++ and Python, with experience working on non‑trivial systems code. Solid foundation in OS concepts, algorithms/data structures, and Linux development (shell, build systems, debugging tools). Comfortable with git and modern CI systems (e.g., GitLab, GitHub Actions). Bonus points for: Coursework or research in software security, program analysis, or compilers. Hands‑on experience with static analysis (CodeQL, Clang‑Tidy, Coverity, Infer) or fuzzing (AFL++, libFuzzer, Syzkaller). Experience with firmware/embedded systems or prior research/technical reports in related areas. If you are excited about applying program analysis and fuzzing techniques to protect millions of streaming devices, we would like to hear from you. Our Hybrid Work Approach Roku fosters an inclusive and collaborative environment where teams work in the office Monday through Thursday. Fridays are flexible for remote work except for employees whose roles are required to be in the office five days a week or employees who are in offices with a five day in office policy. Benefits Roku is committed to offering a diverse range of benefits as part of our compensation package to support our employees and their families. Our comprehensive benefits include global access to mental health and financial wellness support and resources. Local be ... (truncated, view full listing at source)