Job Closed
This listing is no longer active.
Passionate music fans. Innovative tech pros. Perfect harmony. Join our band.
Backend Engineer – Personalization
Location
United Kingdom
Posted
65 days ago
Salary
0
Seniority
Senior
Job Description
Backend Engineer – Personalization
Spotify
• Own the backend systems that rank and serve personalized content to hundreds of millions of Spotify users on the Now Playing View, one of Spotify's most visible surfaces. • Work in an AI-native development workflow. To implement backend changes across services, review their output, and ensure architectural coherence across the system. • Integrate with ML serving infrastructure and collaborate with ML engineers to bring models from training to production within tight latency constraints. • Make product-informed backend decisions to understand why a feature matters to users, not just how to implement it. Connecting system design choices to scroll engagement, discovery, and user experience. • Design the patterns, tests, and guardrails that keep agent-generated code consistent, safe, and production-ready across services. • Run and analyze A/B experiments from instrumenting new features to interpreting rollout metrics. Shipping what the data says works. • Own production reliability for your services including monitoring, alerting, on-call, and incident response. Collaborate as part of a cross functional team including machine learning engineers, data scientists, research scientists, and product managers, to turn ideas into production systems.
Job Requirements
- You are experienced in building and operating backend services in Java or a JVM language within a microservice architecture.
- You think in systems, not just code. You reason about service contracts, failure modes, and architectural tradeoffs before jumping to implementation. When reviewing code, whether written by a person or an AI agent, you catch subtle issues in correctness, performance, and design coherence.
- You're fluent with AI-assisted development. You have hands on experience working with tools like Claude Code to orchestrate work. Decomposing problems into well-scoped tasks, directing multiple parallel agent streams, evaluating their output critically, and iterating. You see AI agents as a force multiplier, not a crutch.
- You're product-oriented with an understanding of the user problem and understanding of why backend change matters in terms of user engagement, not just system metrics, energized by working on a surface that hundreds of millions of people interact with daily.
- You set up guardrails, not just features. You care about designing test suites, architectural patterns, and code conventions that make it safe for agents (and teammates) to move fast. Thinking about what makes a codebase reviewable and verifiable.
- You're excited to work embedded in an ML team, you won't train models yourself, but you'll partner closely with ML engineers to build and maintain the serving infrastructure, feature pipelines, and backend systems that bring their models to production.
- You have practical experience with system design and can reason about tradeoffs in latency, reliability, and scalability across distributed services.
- You care about production ownership including on-call, monitoring, and operational health feel like natural parts of the job, especially when you're responsible for code you may have reviewed rather than written line-by-line.
- You're comfortable with ambiguity. AI-native workflows are new; you're the kind of engineer who figures out best practices rather than waiting for them to be documented.
Benefits
- Flexible work arrangements
Related Guides
Related Job Pages
More Backend Engineer Jobs
Backend Engineer, Java
pub. - Public Value TechnologiesDie digitale Tochter von BR & SWR – wir gestalten digitale Plattformen.
• Design and development of backend services and APIs within the ARD ecosystem • You design and implement scalable microservices based on Java using Spring Boot or Quarkus • Together with the team you design and decide on appropriate system architectures for exchanging, caching and transforming data • You work with containerized applications using Docker and Kubernetes and support their operation and further development • Develop and maintain interfaces (e.g., REST, GraphQL) • You actively participate in code reviews, technical discussions and architecture decisions • Identify and implement improvements regarding performance, reliability and maintainability of existing systems
Software Architect – .NET
pub. - Public Value TechnologiesDie digitale Tochter von BR & SWR – wir gestalten digitale Plattformen.
• Design and implementation of .NET Core services, Web APIs and desktop clients (WPF/WinForms). • Integration with SQL Server, PostgreSQL and NoSQL systems (e.g. MongoDB). • Implementation of RabbitMQ/Kafka queues for asynchronous communication. • Development of unit, integration and end-to-end tests; setup of GitLab CI / Azure DevOps pipelines. • Participation in architecture design and selection of patterns (DDD, event sourcing, CQRS). • Conducting code reviews and coaching junior developers.
Backend Engineer, .NET
pub. - Public Value TechnologiesDie digitale Tochter von BR & SWR – wir gestalten digitale Plattformen.
• Design and implementation of .NET Core services, Web APIs and desktop clients (WPF/WinForms) • Integration with SQL Server, PostgreSQL and NoSQL systems (e.g., MongoDB) • Implementation of RabbitMQ/Kafka queues for asynchronous communication • Development of unit, integration and end-to-end tests; setup of GitLab CI/Azure DevOps pipelines • Contributing to architecture design and selection of patterns (DDD, Event Sourcing, CQRS) • Conducting code reviews and coaching junior developers • Close collaboration with Product Owners and external partners for requirements analysis
• Participar en el desarrollo y programación en entorno HOST con PL1 • Colaborar con equipos multidisciplinares • Proporcionar soluciones innovadoras y sostenibles para proyectos
