Backend Engineer, User Fraud

This role is based in Stockholm with flexibility to work from home.

What you'll do:

• Build, deploy, and operate backend (Java) services that mitigate fraud and abuse at scale.
• Collaborate closely with data engineers and work with Spotify’s data tech stack (Scala, Scio, Google Dataflow).
• Evolve a distributed mitigation platform used by internal fraud detection teams.
• Design APIs, workflows, and system safeguards that protect legitimate users while reducing attacker impact.
• Improve system reliability, scalability, and observability using metrics, logs, and tracing.
• Partner with engineering teams across Europe and the US to integrate mitigation capabilities into broader systems.
• Contribute to strong engineering practices including code reviews, documentation, and incident learnings.

Who you are:

• You have 2+ years of experience designing, building, and operating backend services in production environments.
• You are experienced with APIs, distributed systems, and service-to-service communication.
• You have a strong understanding of data modeling and working with SQL and/or NoSQL databases.
• You care about system reliability, scalability, and operational excellence.
• You use metrics, logging, and monitoring to understand and improve system behavior.
• You communicate clearly and collaborate effectively with cross-functional teams.
• You’re curious about trust, safety, fraud, or adversarial problem spaces.