Senior Media SDK Engineer - Web Playback & Reliability

Spotify; City of Westminster; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading music streaming service is looking for a talented Playback Systems Engineer to enhance their playback experiences across platforms. Responsibilities include overseeing audio and video playback, improving architecture for new media formats, and collaborating with teams for consistency across platforms. The ideal candidate has experience in modern JavaScript, playback APIs, and CI systems, and values teamwork. This role is based in London or Stockholm with flexible working options.

Qualifications

• Deep knowledge of modern JavaScript and TypeScript (ESNext, Web APIs).
• Confident with media playback APIs (MediaSource Extensions, EME, WebRTC).
• Familiar with CI systems and care about data instrumentation.
• Experience with native media stacks (Android/iOS, C++, Rust) is a plus.
• Knowledge of ad technology and fallback mechanisms is valuable.

Responsibilities

• Take end-to-end responsibility for playback and measurement for audio and video.
• Develop team architecture to support new media formats.
• Improve CI and observability systems.
• Collaborate with native teams for shared contracts and tests.
• Advance video reliability through ad fallback and multi-player coordination.
• Contribute to unified dashboards and reusable metrics templates.

Skills

Web or Playback Systems Engineering

Modern JavaScript and TypeScript

Media playback APIs

Data instrumentation

CI systems and hermetic testing

Native media stacks (Android/iOS, C++, Rust)

Job description

A leading music streaming service is looking for a talented Playback Systems Engineer to enhance their playback experiences across platforms. Responsibilities include overseeing audio and video playback, improving architecture for new media formats, and collaborating with teams for consistency across platforms. The ideal candidate has experience in modern JavaScript, playback APIs, and CI systems, and values teamwork. This role is based in London or Stockholm with flexible working options.