> Markdown version of [/jobs/ext/2256555-principal-software-engineer-type-script-javascript-video-engineering](https://www.wearedevelopers.com/jobs/ext/2256555-principal-software-engineer-type-script-javascript-video-engineering). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer, Type Script, JavaScript - Video Engineering - **Company:** Xfinity - **Location:** Englewood, CO, United States (Remote available) - **Experience:** Expert - **Salary:** $135,000.0 - $198,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), HTML5, Web Browsers, Object-Oriented Software Development, Scrum Methodology, Software Engineering, TypeScript, Scripting, Video Streaming, Software Coding, Programming Languages - **Published:** August 26, 2026 - **Apply:** https://www.careerjet.com/job/us86e62158cbc62551949c18afc7da09c2/eaa ## About the Role * 10+ years software development experience with some experience with Java Script application development or other related programming languages. * Bachelor's Degree preferred or equivalent experience. * Computer science fundamentals * Can solve hard problems quickly by writing code * Knowledge of JavaScript within Web Browsers strongly encouraged * Experience designing clean, concise, maintainable APIs * Experience with HTTP video a plus * Good communicator and able to clearly articulate complex issues and technologies * Familiar with a scripting language * Ability to design, develop, and integrate a solution to completion * Comfortable working in a fast paced agile environment * Customer and team-focused attitude, JavaScript; TypeScript; Software Engineering; Collaboration; Object-Oriented Development; Team Mentorship; Communication, Bachelor's Degree While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience. Relevant Work Experience 10 Years + ## Description Player-Platform JS is an SDK written in Typescript, that powers the IP video playback experience on the X1 Platform set-top boxes, and Xfinity Stream on many platforms. It provides a video player that integrates with our video streaming, content protection (DRM), advertisement, emergency alert, and real-time analytics services. Player-Platform strives to provide a high quality, consistent playback experience across all our integrations. Who will you work with? Player-Platform software engineers collaborate with industry experts from many subject areas: software architects, software engineers, data scientists, and other video streaming technologists. Daily, you will be working on a small scrum team that consists of product owners, software engineers, automation engineers, and quality assurance engineers. You will work closely with other technical teams internal and external to Comcast VIPER What are some interesting problems you'll be working on? The JavaScript Player Platform is integrated into a high number of environments with a complex requirement surface area. The complexity we face in integration is closer to an enterprise system than it is to a video player app. Designing toward and executing on more flexible APIs and implementations to allow us to expand our integration footprint will be a constant focus. Working to improve the reliability, and features of our IP Video customers, and give our multi-billion dollar advertising business a driven edge, are also a central focus. Where can you make an impact? Your code will be responsible for all IP video playback streaming that is done at Comcast. It will be run on customers' devices millions of times a week and will be the primary Comcast product that they interact with. You can help improve our video playback experience by developing the most stable, and the highest quality video player in the industry. You'll be working with the brightest minds in Comcast building a video platform that will power Comcast for years to come. You will drive the future of the IP video industry. What You'll Do: * Build clean API's for video playback on supported devices * Work with HTML5 video Media Source and Encrypted Media API Extensions (MSE & EME) * Build reusable software components in TypeScript * Design and implement end to end components related to video playback * Analyze, optimize, and improve the code base * Demonstrate personal and team leadership by showing dedication to integrator and customer success * Support operations personnel in maintaining a high standard of reliability. * Regular and consistent attendance. * Other duties and responsibilities as assigned., * Understand our Operating Principles; make them the guidelines for how you do your job. * Own the customer experience - think and act in ways that put our customers first, give them seamless digital options at every touchpoint, and make them promoters of our products and services. * Know your stuff - be enthusiastic learners, users and advocates of our groundbreaking technology, products and services, especially our digital tools and experiences. * Win as a team - make big things happen by working together and being open to new ideas. * Be an active part of the Net Promoter System - a way of working that brings more employee and customer feedback into the company - by joining huddles, making call backs and helping us elevate opportunities to do better for our customers. * Get results and growth. * Respect and promote inclusion & diversity. * Do what's right for each other, our customers, investors and our communities. The VIPER team is an organization within Comcast's grander Technology Product and Experience organization (TPX) which supports the Product Management, Research & Development, Engineering and Operations for Comcast's Elite Video Experiences in use by Comcast and Syndicated Partners. We support both legacy QAM Video Delivery and the Next Generation IP Video Platform infrastructure from Content Acquisition to the Player consuming experiences we control the end-to-end Video delivery platforms. These platforms deliver video for live linear, video on-demand and cloud DVR services consumed by more than 20 million customers both in-home and out of home on stb's, connected tv, mobile and desktop products. Disclaimer: * This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications., Do you enjoy developing new products and services? Join us! Our Software Engineers work in an agile, collective environment. As a Principal Software Engineer, you will provide tech… + 1 month ago + ## Related Videos - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [JavaScript? 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