Senior Server Engineer, Hay Day

Supercell
London

We are now looking for an experienced Senior Server Engineer to join the Hay Day team. This role can be based either in Helsinki or London.

As a Server Engineer at Supercell, you'll be embedded in a game team, working closely with other game developers and focusing on making sure that our hundreds of millions of monthly players get the best, most uninterrupted experience possible. Depending on the game and your own interests, you can focus more on the general game server infrastructure or new game feature development – and sometimes you do both.

Communication between server engineers in different game teams is absolutely vital to our success. Our server engineers frequently share learnings, both successes and failures, across game teams to make each team better. You must be humble, pragmatic and willing to admit and explain your mistakes. That way, the next time something goes wrong, we'll all be better prepared.

If you have experience in developing live systems and using virtualized computing, and you understand what it means to support a system with large user volumes, you might just be the person we're looking for!

What You’ll Be Doing:

  • Design, implementation, deployment and maintenance of highly scalable and available backends for live games
  • Contribute to best practices on reliability and availability
  • Troubleshoot and tune high-volume sharded database systems
  • Periodically offer round-the-clock, first-line support to the production environments, as part of a rotating on-call duty
  • Contribute to game design discussions as game teams are typically small

What You Have:

  • Excellent Java programming skills, including experience with server-side Java, concurrency handling, and distributed systems
  • Good experience with Linux shell and scripting languages
  • Database design and implementation skills, and good SQL knowledge
  • Experience with cloud computing (e.g. AWS) and Terraform
  • Being passionate and committed to tasks, and in general an autonomous person with high levels of initiative and energy
  • An open and respectful attitude towards others and their work

Would Be Nice if You Also Had:

  • Knowledge of network protocols and non-blocking IO
  • Previous working experience on high-throughput live systems is a big plus. If absent, then at least a solid appreciation of the challenges involved is expected
  • Prior experience in game development is a plus but not required as long as you are passionate about games
  • Experience in server development without application servers

Where You’ll Be:

You can work from our office in Helsinki or London.

About Supercell:

Supercell is a games company from Helsinki, Finland, with offices also in San Francisco, Seoul, Shanghai, and London. You might know us as the makers of Hay Day, Clash of Clans, Boom Beach, Clash Royale, Brawl Stars, and Squad Busters . Our mission is to create great games that as many people as possible play for years and that are remembered forever.

Hey, You Might Love It Here!

Independent cells and trust are at the core of our culture. We take good care of our people, providing them with the compensation, work environment, and resources they need to succeed while having fun along the way.

You Are Not Your Job Title ™:

Here, you won’t need to focus on chasing titles or climbing ladders. Recognition isn’t tied to your title, as it doesn't define the impact you can have around here.

Benefits and Compensation:

We structure our compensation and benefits with the intention of treating you as a human being, not a resource. Details are available via our benefits information.

Relocation? Yes!

Our dedicated mobility team and partners will support you throughout your move, no matter where you’re moving from.

Not Sure if You Should Apply?

If this role excites you, apply. We're happy to learn about any specific accommodations you may need to fully engage in our recruitment process.

Once you're ready to apply, send your application through the form at the bottom of the page.

Posted 2026-01-18

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