Senior Software Engineer, Video Player

Tubi • San Francisco, CA

67d • Hybrid

About The Position

The Player Engineering Team builds and maintains the core playback experience for Tubi clients - spanning Android Mobile, Android TV, Web, Smart TVs, gaming consoles, and set-top boxes. We are the cornerstone of video playback at Tubi, ensuring millions of viewers enjoy smooth, high-quality, free streaming daily. From optimizing performance on low-spec devices to developing advanced player features, you will play a key role in delivering top-tier media technology at scale. This role provides high visibility and direct impact-every improvement you implement enhances user experience and drives Tubi's business growth. This role is hybrid in either San Francisco or Toronto.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or equivalent experience.
• 5+ years of software engineering experience in video playback, streaming, or media systems.
• Proficiency with JavaScript, React, HTML5/CSS, and modern front-end frameworks.
• Experience with media APIs such as MSE and EME.
• Familiarity with video players (Hls.js, Shaka Player, dash.js, or Video.js).
• Strong understanding of browser internals and performance optimization for constrained devices.
• Experience with TypeScript is a plus.
• A passion for quality, scalability, and crafting reliable playback systems for millions of users.

Responsibilities

• Design, develop, and maintain next-generation video player technology across diverse platforms, including Android Mobile, Android TV, Smart TVs, gaming consoles, and OTT devices.
• Enhance media playback performance, stability, and reliability using technologies such as MSE, EME, WebAssembly (WASM), Web Workers, WebCodecs, and WebGPU.
• Build player features that optimize user experience - from adaptive streaming to interactive playback controls.
• Collaborate with cross-functional teams to deliver seamless integration between player, UI, and backend systems.
• Contribute to open-source media player libraries and represent Tubi in the wider developer community.
• Mentor other engineers and help shape best practices for performance and quality.
• Detect anomalies with AI: Develop systems that automatically identify playback failures, quality degradation, and device-specific anomalies in real time.
• Accelerate development with AI tools: Use AI-assisted coding, testing, and profiling to improve velocity, quality, and observability.
• Leverage AI for insights: Create tools that use AI to analyze experiments, interpret metrics, and crawl device logs to uncover insights about user playback experiences.
• Explore smarter algorithms: Research and implement advanced adaptive bitrate (ABR) logic and AI-driven optimization strategies to further improve playback quality, startup latency, and stability across devices.

What This Job Offers

• Industry: Broadcasting and Content Providers
• Education Level: Bachelor's degree
• Number of Employees: 501-1,000 employees