As a Senior Software Developer, you’ll build a world-class platform for our customers by solving complex technical problems and building systems that run at scale. You will play a critical role in developing code and solving problems independently while shaping our next-gen solutions that drive our company's mission forward. We seek candidates with a passion for crafting elegant code and building innovative software solutions.
Key responsibilities:- Architecture & Design: Lead the design of complex front-end systems using modern frameworks (React.js, Next.js, and Typescript preferred) and state management libraries.
- Performance Engineering: Optimize web applications for maximum speed, scalability, and Core Web Vitals. Optimize startup time, rebuffering, memory usage, and rendering performance,PFR, startup time, errors, and engagement.
- Cross Browser: Ensure a seamless experience across desktop browsers, mobile web, and Smart TV web platforms (Tizen, webOS).
- Mentorship: Conduct rigorous code reviews and mentor junior/mid-level engineers on best practices and design patterns.
- Collaboration: Partner with Product Managers and UX Designers to translate wireframes into high-quality, reusable components.
- Streaming: Integrate player UI with video playback engines (HTML5, MSE, EME).
- Analytics & QoS: Design and integrate analytics and observability frameworks to track key metrics such as startup time, buffering ratio, rebuffer frequency, bitrate switches/drops, playback failures, and user engagement, enabling data-driven performance optimization and rollout decisions.
- Triaging Production issues: Ability to debug and resolve production issues under pressure, demonstrating a strong ownership mindset with a bias for performance and reliability, and delivering timely fixes that minimize customer impact.
- Security Compliance: Strong understanding of web security best practices, including XSS prevention, CSP, CORS, secure media playback, and DRM-related attack vectors.
Requirements
- 2-4 years of professional experience in modern web development.
- Expert-level knowledge of TypeScript, React/Next.js, and CSS-in-JS (styled-components/Tailwind).
- Deep hands-on experience with HTML5 video players and SDKs such as Shaka Player, HLS.js, Video.js, and Dash.js, including customization of UI, buffering logic, error handling, and ABR behavior.
- Protocols: Expert knowledge of HLS and MPEG-DASH, including manifest structure, segmenting, DRM, and adaptive bitrate.
- Hands-on experience with modern build systems (Webpack, Vite, Rollup), CI/CD pipelines, and automated testing (Jest, React Testing Library, Playwright), ensuring high-quality A/B experiments and production-ready releases.
Preferred education and experience:
- Bachelor’s or Master’s degree in Computer Science or a related field.
- 2-4 years of Web development experience.
Benefits
What you get
- Best in class salary: We hire only the best, and we pay accordingly.
- Proximity Talks: Meet other designers, engineers, and product geeks — and learn from experts in the field.
- Keep on learning with a world-class team: Work with the best in the field, challenge yourself constantly, and learn something new every day.
About us
Proximity is the trusted technology, design, and consulting partner for some of the biggest Sports, Media, and Entertainment companies in the world! We’re headquartered in San Francisco and have offices in Palo Alto, Dubai, Mumbai, and Bangalore. Since 2019, Proximity has created and grown high-impact, scalable products used by 370 million daily users, with a total net worth of $45.7 billion among our client companies.
Today, we are a global team of coders, designers, product managers, geeks, and experts. We solve complex problems and build cutting-edge tech, at scale. Our team of Proxonauts is growing quickly, which means your impact on the company’s success will be huge. You’ll have the chance to work with experienced leaders who have built and led multiple tech, product, and design teams. Here’s a quick guide to getting to know us better:
Here’s a quick glimpse of Proximity and what it’s like to be a Proxonaut:
- Visit to listen to what our CEO, , has to say about Proximity.
- Meet some of our Proxonauts here:
- Here are some quick links to the , , and (our design wing).
Follow our team's #BTS (behind-the-scenes) updates on our Instagram channels —
- -
Top Skills
What We Do
We are Proximity — a global team of coders, designers, product managers, geeks and experts. We solve hard, long-term engineering problems and build cutting edge tech products
