Senior Server Engineer, Central Tech

About the role

Supercell is looking for an experienced Senior Server Engineer to join its Central Tech organization in Helsinki. The team builds the core server technology behind Supercell's game engine, which supports hundreds of millions of players, processes about 15 billion game events per day and stores 5TB of data per day. The engineer owns key parts of the server technology from design to production and works closely with game teams.

Key responsibilities

• Design, build and evolve core backend game systems, including operational tooling, server frameworks and server-side delivery systems.
• Explore the use of AI technologies in robust, scalable server technology.
• Take technical ownership of critical server technology and be accountable for reliability and performance.
• Collaborate with game teams to understand their needs and help them get the most out of central systems.
• Investigate and resolve production incidents affecting players and drive long-term fixes.
• Take part in the on-call rotation, providing first-line support for production.
• Lead design decisions, mentor other engineers and contribute to best practices around scalability, reliability, availability, security and operability.
• Improve operational procedures and share knowledge across Central Tech teams.

Required profile

• Strong server-side experience in Java, including concurrency and distributed systems.
• Track record of designing and building high-performance, scalable distributed systems.
• Experience operating live production systems with large user volumes, including debugging under pressure.
• Experience with a major cloud platform (AWS or GCP), automation and Infrastructure as Code.
• Strong communication and collaboration skills, with a humble, pragmatic and respectful approach.
• Interest in AI tools and curiosity about how they change how systems are built and operated.

Required skills

• Java, concurrency and distributed systems
• AWS or GCP, automation and Infrastructure as Code
• Nice to have: large-scale containerized environments (EKS, ECS, Fargate, GKE), Terraform or similar IaC tools, strong SQL and database design, Linux, shell scripting, networking and cloud security, ZooKeeper or similar coordination systems, prior game development experience

The position is based in Helsinki. Relocation support is offered, and the company states that job titles do not carry prefixes such as Senior or Principal.