Craft:

Technology & Development

Job Description:

Build the foundations that help our teams create.

We’re looking for a Senior Backend Java Developer to help build and evolve shared backend platforms at King. Our technology provides services and capabilities that internal teams rely on to develop games, tools and services.

Building platforms used across multiple teams brings interesting engineering challenges: handling high traffic, designing versátil APIs and evolving systems while keeping them reliable. You’ll work on Java backend services that solve common problems, making it easier for teams to build, integrate and deliver new capabilities.

Your role within our Kingdom

As a senior backend developer, you’ll help design, build and operate shared backend platforms and services. You’ll work across established systems and new capabilities, balancing the needs of individual teams with solutions that are reusable and maintainable over time.

You’ll take ownership from the first technical discussion through implementation, rollout and production support. Along the way,



you’ll work closely with fellow engineers, product partners and the teams integrating our services. Your experience will help shape technical decisions, simplify complex problems and improve how we build and operate our platforms.

You Will, Among Other Things…

• Develop and maintain Java backend services and shared platform capabilities used by teams across King.
• Design reliable APIs and reusable components that make integration straightforward for other developers.
• Improve the performance, scalability and resilience of systems operating under significant load.
• Work with internal teams to understand their needs and turn common requirements into practical platform solutions.
• Investigate production issues and improve monitoring, troubleshooting and operational reliability.
• Evolve existing architecture, manage compatibility and reduce technical debt through incremental improvements.
• Build

📌 Senior Backend Java Developer (Barcelona)
🏢 King
📍 Barcelona