Back End Developer

Job Description The Platform department creates the technology ecosystem that enables Spotify engineering to deliver quickly, while safely and easily scaling to a billion customers. Our team is part of Platform, and our mission is enabling Spotify developers to efficiently and reliably deliver products by removing the effort to deploy. We support our internal customers to ship code faster, more frequently, and with greater confidence. We are currently building Gantry, Spotify's next-generation deployment platform. Gantry is a foundational enabler of Spotify's monorepo migration, it decouples CI and CD, abstracts complex Kubernetes and infrastructure concerns, and makes it possible for thousands of services to safely coexist and deploy from a shared codebase. Migrating services to Gantry is therefore a critical step in unblocking and scaling Spotify's transition to a monorepo, reducing operational risk in our legacy systems, and improving overall developer productivity. The Role We are looking for a senior backend engineer (contractor) who can onboard quickly, operate independently, and proactively identify where their effort will have the most impact. You'll work closely with the Warpspeed team to evolve Gantry, accelerate service migrations that enable the monorepo transition, and support internal engineering teams through complex deployment and infrastructure changes. What You'll Do - Design, build, and operate Go-based Kubernetes operators and backend services - Extend Gantry's core capabilities - Drive and execute migrations to Gantry - Build, operate, and improve AI-powered agents that automate migrations, review PRs, and assist with deployment troubleshooting - Support internal teams by troubleshooting deployment issues and unblocking releases - Take operational ownership of team-owned services - Proactively identify and tackle the highest-impact problems in the deployment and migration workflow