Senior Build System Engineer

At Spotify, our Build Systems team enables thousands of engineers to build, test, and ship quickly and reliably. We power the unified monorepo that supports our iOS, Android, Desktop (C++), and Web clients, ensuring fast, reliable, and scalable builds across all platforms.We’re looking for a Senior Build Systems Engineer with deep experience in large-scale, multi-language build environments to help shape the future of our client build infrastructure. You’ll architect, optimise, and evolve our Bazel-based systems to enable efficient and developer-friendly workflows across the entire client platform stack.What You'll Do Design, build, and maintain Bazel-based build systems for Spotify’s client monorepo (iOS, Android, C++, Web).Lead improvements to build performance, remote caching, and incremental build reliability at scale.Develop tooling and automation that improves IDE integration and developer ergonomics.Partner with platform and infra teams to define build graph architecture, dependency management, and hermeticity strategies.Instrument and analyze build telemetry to measure and improve developer feedback loops.Drive consistency and standardization across cross-platform builds, ensuring reproducible and scalable workflows.Mentor peers and contribute to a culture of technical excellence and continuous improvement.Who You Are Strong experience in at least one of: iOS (Xcode, Swift), Android (Gradle, Kotlin/Java), C++ (CMake/Ninja), or Web (TypeScript, Yarn, Webpack).Proven experience designing or scaling build systems with BazelComfortable working in multi-language, multi-platform monorepos.Strong understanding of hermetic builds, remote caching, and distributed execution.Familiar with IDE integration workflows and tooling ecosystems.Excellent collaborator with strong communication skills and a systems-thinking mindset.Passionate about improving developer productivity and enabling teams to move faster with confidence.Where You'll Be This role is based in London or StockholmWe offer you the flexibility to work where you work best! There will be some in person meetings, but still allows for flexibility to work from home.Spotify is an equal opportunity employer. You are welcome at Spotify for who you are, no matter where you come from, what you look like, or what’s playing in your headphones. Our platform is for everyone, and so is our workplace. The more voices we have represented and amplified in our business, the more we will all thrive, contribute, and be forward-thinking! So bring us your personal experience, your perspectives, and your background. It’s in our differences that we will find the power to keep revolutionizing the way the world listens.At Spotify, we are passionate about inclusivity and making sure our entire recruitment process is accessible to everyone. We have ways to request reasonable accommodations during the interview process and help assist in what you need. If you need accommodations at any stage of the application or interview process, please let us know - we’re here to support you in any way we can.Spotify transformed music listening forever when we launched in 2008. Our mission is to unlock the potential of human creativity by giving a million creative artists the opportunity to live off their art and billions of fans the chance to enjoy and be passionate about these creators. Everything we do is driven by our love for music and podcasting. Today, we are the world’s most popular audio streaming subscription service. Apply tot his job