Senior Fullstack Engineer - Data Platform at spotify

Mission Statement The Platform team creates the technology that enables Spotify to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe. Spanning many disciplines, we work to make the business work; creating the infrastructure, tooling, frameworks, and capabilities needed to welcome a billion customers. About the Team You’ll join the Data Platform within the Platform mission, where we build the foundations that power how Spotify understands user behavior at scale. Our team owns the SDKs used across iOS, Android, and web to collect user behavior data, and we build the tools and APIs that make instrumentation seamless for developers. Working closely with engineers, data scientists, and product partners, we enable teams across Spotify to make better, data-informed decisions that shape the listening experience for millions. What You'll Do • Build and evolve internal tools that help developers instrument and understand user behavior data • Collaborate with engineers, data scientists, designers, and product managers to create intuitive and scalable developer experiences • Design and maintain APIs that integrate smoothly with Spotify’s web clients, including desktop and TV platforms • Evolve and maintain JavaScript SDKs to support new capabilities within the user behavior infrastructure • Identify friction points in adoption and integration, and continuously improve the developer experience • Contribute to backend systems and services that support data collection and processing at scale • Take part in an on-call rotation to support the reliability and performance of the platform Who You Are • You are experienced working across frontend, backend, and infrastructure in a fullstack environment • You have strong experience with JavaScript and TypeScript, including modern development, testing, and debugging practices • You are comfortable building applications using React and working with backend systems in Java • You care deeply about developer experience and enjoy building intuitive, reliable APIs and tools • You have a quality mindset and think holistically about software development, from coding to deployment and monitoring • You have experience building user-friendly web applications and understand what makes a great user experience • You are curious and collaborative, and enjoy working with cross-functional partners to solve complex problems • You have exposure to areas such as GCP, Kubernetes, gRPC, protobuf, or large-scale data pipelines • You are comfortable leveraging AI tools (such as Claude Code) to enhance development workflows Where You'll Be • This role is based in London • We 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.