About the Role:
We are hiring a Senior Software Engineer to build Tubi's native app runtime for connected TVs on Cobalt, the lightweight, open-source browser engine behind YouTube on living room devices. You will own the layer between Tubi's React app and the device: the Cobalt engine, its Starboard porting layer, and new native components we write in C++ and Rust.
The goal is a Tubi app that launches faster, uses less memory, and behaves the same on every device, starting with Fire TV and expanding to other CTV platforms. This is a hands-on, high-ownership role on a small team, working closely with our web engineers, QA, and device partners.
This is a hybrid role which is two days in the SF office.
What You'll Do:
- Build, integrate, and ship Cobalt as the runtime for Tubi's CTV apps, packaged as a native library inside our Android (Fire TV) app and later on other platforms
- Implement and maintain Starboard platform integrations: graphics, input, audio/video playback, DRM, and system services
- Write new native modules in modern C++ and Rust, including safe FFI boundaries between the two
- Drive startup and memory performance on low-end, memory-constrained devices (1 GB RAM class): profile, measure, and fix
- Keep us current with upstream Cobalt releases, track and contribute fixes upstream, and manage security patches for the engine we ship
- Work with media and playback teams on video pipeline needs such as demuxing, adaptive streaming, and ad playback
- Build tooling that runs the Tubi app on Cobalt on developer machines and in CI, so we can test UI and automation without a device farm
- Work directly with device partners' engineering teams on platform issues
- Mentor engineers and raise the team's native and systems engineering bar
Your Background:
- 6+ years of professional software engineering, most of it in systems or native code
- Expert-level modern C++ (C++17/20): memory management, concurrency, templates, and debugging large codebases
- Strong production experience in Rust: ownership and lifetimes, async, unsafe code, and C/C++ interop (FFI, bindgen/cxx)
- Experience with large C++ build systems (GN/Ninja, CMake, or Bazel) and cross-compiling for ARM and embedded Linux or Android targets
- Hands-on performance work: profiling CPU, memory, and startup time with tools like perf, Perfetto, or heaptrack, and turning findings into measurable wins
- Comfort debugging on real hardware: Android NDK, adb, native crash analysis, and symbolication
- Clear written communication and a track record of leading technical initiatives across teams
Nice to Have
- Experience with Cobalt, Starboard, Chromium, or another browser engine (Blink, WebKit, Servo)
- JavaScript engine internals, especially V8: code caching, snapshots, or GC tuning
- Graphics on embedded devices: OpenGL ES, Skia, or WebGPU
- Media pipelines: MSE/EME, ExoPlayer or native players, demuxers, Widevine or PlayReady DRM
- Shipping on TV platforms such as Fire TV, Android TV, Samsung Tizen, LG webOS, or Roku
- Open-source contributions to C++ or Rust projects
- Enough React and TypeScript to work with the web app running on top of the engine
#LI-CL1
#LI-Hybrid
Pursuant to state and local pay disclosure requirements, the pay range for this role, with final offer amount dependent on education, skills, experience, and location is listed annually below. This role is also eligible for an annual discretionary bonus, long-term incentive plan, and various benefits including medical/dental/vision, insurance, a 401(k) plan, paid time off and other benefits in accordance with applicable plan documents.
Tubi is a division of Fox Corporation, and the FOX Employee Benefits summarized here, covers the majority of all US employee benefits. The following distinctions below outline the differences between the Tubi and FOX benefits:
- For US-based non-exempt Tubi employees, the FOX Employee Benefits summary accurately captures the Vacation and Sick Time.
- For all salaried/exempt employees, in lieu of the FOX Vacation policy, Tubi offers a Flexible Time off Policy to manage all personal matters.
- For all full-time, regular employees, in lieu of FOX Paid Parental Leave, Tubi offers a generous Parental Leave Program, which allows parents twelve (12) weeks of paid bonding leave within the first year of birth, adoption, surrogacy, or foster placement of a child in addition to applicable government leave program(s) and FOX’s short-term disability policy. This time is 100% paid through a combination of any applicable state, city, and federal leaves and wage-replacement programs in addition to contributions made by Tubi.
- For all full-time, regular employees, Tubi offers a monthly wellness reimbursement.
Boldly built for every fandom, Tubi is a free streaming service that entertains over 100 million monthly active users. Tubi offers the world's largest collection of Hollywood movies and TV shows, thousands of creator-led stories and hundreds of Tubi Originals made for the most passionate fans. Headquartered in San Francisco and founded in 2014, Tubi is part of Tubi Media Group, a division of Fox Corporation.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, gender identity, disability, protected veteran status, or any other characteristic protected by law. We will consider for employment qualified applicants with criminal histories consistent with applicable law.
Skills Required
- 6+ years of professional software engineering experience, primarily in systems or native code
- Expert-level modern C++ experience, including memory management, concurrency, templates, and debugging large codebases
- Strong production experience with Rust, including ownership, lifetimes, async, unsafe code, and C/C++ interoperability
- Experience with large C++ build systems such as GN/Ninja, CMake, or Bazel
- Experience cross-compiling for ARM and embedded Linux or Android targets
- Hands-on CPU, memory, and startup performance profiling using tools such as perf, Perfetto, or heaptrack
- Experience debugging real hardware using Android NDK, adb, native crash analysis, and symbolication
- Clear written communication and experience leading technical initiatives across teams
- Experience with Cobalt, Starboard, Chromium, or another browser engine
- Experience with JavaScript engine internals, especially V8
- Experience with embedded graphics technologies such as OpenGL ES, Skia, or WebGPU
- Experience with media pipelines, including MSE/EME, ExoPlayer, demuxers, or Widevine and PlayReady DRM
- Experience shipping on TV platforms such as Fire TV, Android TV, Samsung Tizen, LG webOS, or Roku
- Open-source contributions to C++ or Rust projects
- Working knowledge of React and TypeScript
Tubi Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Tubi and has not been reviewed or approved by Tubi.
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Healthcare Strength — Medical, dental, and vision start from day one with multiple plan options under the parent-company framework; a high employer premium share and added supports like HSA funding and mental‑health resources strengthen coverage.
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Retirement Support — A 401(k) with matching plus an additional company contribution and a student‑debt program that counts eligible payments toward matching indicate robust long‑term savings support.
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Parental & Family Support — A dedicated 12 weeks of paid parental bonding leave, along with backup care and adoption/surrogacy reimbursements, provides meaningful family assistance.
Tubi Insights
What We Do
Tubi, a division of FOX Entertainment, is an ad-supported video-on-demand service with more than 40,000 movies and TV shows in the U.S., including a growing library of Tubi Originals, 145+ local and live news, sports and entertainment channels, and 400+ entertainment partners, featuring content from every major Hollywood studio. Tubi gives fans of film, television, news and sports an easy way to discover new content that is completely free. Tubi is available in the U.S. on Android and iOS mobile devices, Amazon Echo Show, Google Nest Hub Max, Comcast Xfinity X1, Cox Contour, and on connected television devices such as Amazon Fire TV, Vizio TVs, LG TVs, Sony TVs, Samsung TVs, Roku, Apple TV, Chromecast, Android TV, PlayStation 4 & 5, Xbox One & Series X|S, and soon on Hisense TVs globally. Consumers can also watch Tubi content on the web at www.tubi.tv.
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