Senior Level Javascript Developer Jobs
Senior level javascript developer jobs place engineers in charge of architecture decisions, system-wide standards, and the cross-functional teams or projects that build on them. Roles are heavily remote and hybrid, concentrated in Technology & Software, Manufacturing, and Agriculture & Farming, with employers like Comcast, Oscilar, and Red Alpha hiring at this level now.
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Job Summary
Job 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.
What You'll Need:
- 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
Employees at all levels are expected to:
- 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.
Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.
Skills:
JavaScript; TypeScript; Software Engineering; Collaboration; Object-Oriented Development; Team Mentorship; Communication
Salary:
Primary Location Pay Range: $160,123.03 - $240,184.54
Comcast intends to offer the selected candidate base pay within this range, dependent on job-related, non-discriminatory factors such as experience. The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.
The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.
Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That’s why we provide an array of options, expert guidance and always-on tools, that are personalized to meet the needs of your reality - to help support you physically, financially and emotionally through the big milestones and in your everyday life. Please visit the compensation and benefits summary on our careers site for more details.
Education
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 +
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Who's Hiring
- Comcast1
- Oscilar1

- Red Alpha1

- S&P Global1
- Gumgum1

Top Industries Hiring
- Technology & Software3
- Manufacturing1
- Agriculture & Farming1
- Marketing & Advertising1
Senior Level Javascript Developer Jobs: Frequently Asked Questions
How do I get a senior level javascript developer job?
Employers at this level look for engineers who own outcomes, not just tasks. Demonstrate depth across the full stack or a specialized domain, show examples of architectural decisions you drove, and highlight mentorship or technical leadership you have provided. Code quality, system design fluency, and the ability to align engineering work with business goals are what separate strong senior candidates from mid-level ones.
Which companies hire senior level javascript developers?
Companies hiring senior level javascript developers right now include Comcast, Oscilar, and Red Alpha, based on current listings on Migrate Mate as of July 2026. Hiring at this level comes from a wide range of employers, from established enterprises modernizing their platforms to growth-stage product companies scaling engineering teams quickly.
Are there remote senior level javascript developer jobs?
Yes, remote and hybrid work is common at this experience level. About 25% of senior level javascript developer openings are remote or hybrid as of July 2026, reflecting how much demand there is for experienced engineers who can work independently and lead distributed teams without close supervision.
What makes a javascript developer role senior level?
Senior level roles are defined by scope and ownership. Rather than completing assigned tickets, senior developers drive technical direction, evaluate tradeoffs in system design, and set standards others follow. They are expected to mentor junior and mid-level engineers, contribute to hiring and code review processes, and translate complex business requirements into sound engineering solutions with minimal oversight.
Which industries hire the most senior level javascript developers?
Senior level javascript developer roles concentrate in Technology & Software, Manufacturing, and Agriculture & Farming, based on current listings on Migrate Mate as of July 2026. These sectors drive demand because they rely on complex, high-traffic web applications and product platforms where experienced engineers who can own architecture and lead delivery are critical to scaling effectively.