{"id":1470656,"url":"https://alion.io/job/tubi-senior-software-engineer-cobalt","title":"Senior Software Engineer, Cobalt","company":{"id":179685,"name":"Tubi","domain":"tubi.tv","url":"https://alion.io/company/tubi","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":87,"open_postings":9,"ghost_share":0,"stale_share":0.333,"repost_share":0,"time_to_fill_p50_days":72,"computed_at":"2026-10-12T06:55:09Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":186400,"max":266300,"currency":"USD","period":"year","gross":null,"usd_annual":266300},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Android NDK","optional":false},{"name":"Bazel","optional":false},{"name":"C++","optional":false},{"name":"CMake","optional":false},{"name":"Linux","optional":false},{"name":"React.js","optional":false},{"name":"Rust","optional":false},{"name":"Exoplayer","optional":true},{"name":"JavaScript","optional":true},{"name":"OpenGL","optional":true},{"name":"TypeScript","optional":true},{"name":"WebGPU","optional":true}],"status":"live","first_seen_at":"2026-09-29T14:15:48Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-12T08:48:59Z","board_verified":true,"closed_at":null,"days_open":13,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":13},"description":"About the Role:\nWe 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.\nThe 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.\nThis is a hybrid role which is two days in the SF office. \nWhat You'll Do:\nBuild, 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\nImplement and maintain Starboard platform integrations: graphics, input, audio/video playback, DRM, and system services\nWrite new native modules in modern C++ and Rust, including safe FFI boundaries between the two\nDrive startup and memory performance on low-end, memory-constrained devices (1 GB RAM class): profile, measure, and fix\nKeep us current with upstream Cobalt releases, track and contribute fixes upstream, and manage security patches for the engine we ship\nWork with media and playback teams on video pipeline needs such as demuxing, adaptive streaming, and ad playback\nBuild 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\nWork directly with device partners' engineering teams on platform issues\nMentor engineers and raise the team's native and systems engineering bar\nYour Background:\n6+ years of professional software engineering, most of it in systems or native code\nExpert-level modern C++ (C++17/20): memory management, concurrency, templates, and debugging large codebases\nStrong production experience in Rust: ownership and lifetimes, async, unsafe code, and C/C++ interop (FFI, bindgen/cxx)\nExperience with large C++ build systems (GN/Ninja, CMake, or Bazel) and cross-compiling for ARM and embedded Linux or Android targets\nHands-on performance work: profiling CPU, memory, and startup time with tools like perf, Perfetto, or heaptrack, and turning findings into measurable wins\nComfort debugging on real hardware: Android NDK, adb, native crash analysis, and symbolication\nClear written communication and a track record of leading technical initiatives across teams\nNice to Have\nExperience with Cobalt, Starboard, Chromium, or another browser engine (Blink, WebKit, Servo)\nJavaScript engine internals, especially V8: code caching, snapshots, or GC tuning\nGraphics on embedded devices: OpenGL ES, Skia, or WebGPU\nMedia pipelines: MSE/EME, ExoPlayer or native players, demuxers, Widevine or PlayReady DRM\nShipping on TV platforms such as Fire TV, Android TV, Samsung Tizen, LG webOS, or Roku\nOpen-source contributions to C++ or Rust projects\nEnough React and TypeScript to work with the web app running on top of the engine\n#LI-CL1 \n#LI-Hybrid \nPursuant 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.\nHigh cost labor markets such as but not limited to Los Angeles, New York City, and San Francisco\n$186,400—$266,300 USD\nTubi 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:\nFor US-based non-exempt Tubi employees, the FOX Employee Benefits summary accurately captures the Vacation and Sick Time.\nFor all salaried/exempt employees, in lieu of the FOX Vacation policy, Tubi offers a Flexible Time off Policy to manage all personal matters.\nFor 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.\nFor all full-time, regular employees, Tubi offers a monthly wellness reimbursement.\nAbout Tubi:\nBoldly 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.\nWe 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.","description_format":"text","description_chars":5601,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible time off","Parental leave"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Streaming & OTT Platforms"],"lifecycle":[{"event":"open","at":"2026-09-29T16:05:18Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 33 · green card filings: 18","filings_12m":33,"filings_prev_12m":23,"green_card_filings_12m":18,"median_offered_wage_usd":211912,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":14}],"liveness":{"score":89,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.89,"p_room":1,"age_days":12,"expected_fill_days":72,"reasons":["conf:3","velocity","win:early"],"computed_at":"2026-10-12T06:55:09Z"},"pay":{"stated_usd_annual":266300,"is_top_pay":true},"html_url":"https://alion.io/job/tubi-senior-software-engineer-cobalt","json_url":"https://alion.io/job/tubi-senior-software-engineer-cobalt.json","meta":{"generated_at":"2026-10-12T14:47:10Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":23327,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":179685},"rest":"https://alion.io/mcp/rest/get_company?id=179685"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftubi-senior-software-engineer-cobalt"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ftubi-senior-software-engineer-cobalt"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ftubi-senior-software-engineer-cobalt"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/tubi-senior-software-engineer-cobalt\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftubi-senior-software-engineer-cobalt"}]}