Senior Software Engineer, Supercell ID (Backend)

Supercell; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Job summary

Supercell ID connects hundreds of millions of players to Supercell's ecosystem. We are seeking a Senior Software Engineer to join the Supercell ID team within our Player Platform organization.

You will own and drive significant evolutions of Supercell ID, setting technical direction and leading high‑impact initiatives end‑to‑end. You will design, build, and operate a scalable, highly available platform, collaborating with game teams, Trust & Safety, Legal, and others.

Qualifications

• Strong programming skills (we use Java and DynamoDB, but value experience in other stacks too)
• Experience owning and operating business‑critical systems – you've designed for failure, set up observability, and been woken up when things broke
• A security mindset – you think about threats and vulnerabilities during design, not after launch
• Ability to break down complex problems into incremental deliverables that each bring value
• Familiarity with cloud infrastructure (AWS preferred) and infrastructure‑as‑code (Terraform)
• Proficiency using modern AI‑assisted development tools in your day‑to‑day work
• Experience driving cross‑team projects and working with non‑engineering stakeholders
• Comfort with ambiguity and a strong sense of ownership

Responsibilities

• Design, build, and operate a scalable, highly available, and secure platform for hundreds of millions of players
• Own systems end-to-end – from architecture decisions through production operation
• Collaborate with stakeholders to define requirements
• Participate in 24/7 on‑call rotation for production support

Skills

Java

DynamoDB

Cloud infrastructure

Terraform

Observability

AI-assisted development

Cross‑team collaboration

Ownership

Tools

AWS

Job description

We are looking for a Senior Software Engineer to join the Supercell ID team within our Player Platform organization. In this role, you will own and drive significant evolutions of Supercell ID: setting technical direction, leading high-impact initiatives end-to-end, and raising the bar for player safety, reliability, and trust across our ecosystem.

As a Senior Software Engineer you will play a key role in designing and building new features, maintaining and operating existing systems, and collaborating with game teams, Player Care, Trust & Safety, Legal, and others across Supercell. We're a small team with outsized impact – and outsized expectations. We expect Senior Software Engineers to take active part in planning and leading feature projects beyond just technical execution. This means being present in every part of the project lifecycle, from planning and scoping to shipping and operating.

Supercell ID connects hundreds of millions of players to Supercell's ecosystem. The team builds critical infrastructure and UX that links all our games and web services together into a cohesive player experience. We care about account safety, registration and login, compliance, identity, and Supercell-wide architecture for consolidating and packaging common account use cases.

What You'll Be Doing

• Design, build, and operate a scalable, highly available, and secure platform for hundreds of millions of players
• Own systems end-to-end – from architecture decisions through production operation
• Collaborate with stakeholders to define requirements
• Participate in 24/7 on‑call rotation for production support

What You Have

• Strong programming skills (we use Java and DynamoDB, but value experience in other stacks too)
• Experience owning and operating business‑critical systems – you've designed for failure, set up observability, and been woken up when things broke
• A security mindset – you think about threats and vulnerabilities during design, not after launch
• Ability to break down complex problems into incremental deliverables that each bring value
• Familiarity with cloud infrastructure (AWS preferred) and infrastructure‑as‑code (Terraform)
• Proficiency using modern AI‑assisted development tools in your day‑to‑day work
• Experience driving cross‑team projects and working with non‑engineering stakeholders
• Comfort with ambiguity and a strong sense of ownership

Would Be Nice if You Also Have

• Experience with identity/authentication systems (OAuth, OIDC, session management)
• Experience building multi‑region systems with high availability goals
• Experience developing AI‑assisted engineering workflows or tooling

Why This Role

• Scale: Your work reaches hundreds of millions of players across all Supercell games and services

• Ownership: Small team, big responsibility – you'll shape technical direction, not just execute tickets

• Impact: Supercell ID is foundational infrastructure; what you build matters to every game team and every player

• Environment: High autonomy, low bureaucracy – we trust you to make good decisions

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That's it about the role! Below, we've gathered some things we feel are important for you to know. Totally optional, but a highly recommended read.

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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, and Brawl Stars . Our mission is to create great games that as many people as possible play for years and that are remembered forever.

So, how do we make great games? By putting together the best teams and giving them the freedom and independence to succeed. And by taking risks, failing, sharing learnings, and killing lots of projects.

Hey, You Might Love It Here!

Independent cells and trust are at the core of our culture. But it takes more than that to make great games. 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 TM

Here, you won’t need to focus on chasing titles or climbing ladders. Internally, our job titles don’t include prefixes like Senior, Junior, Principal, or Director. Recognition isn’t tied to your title, as it doesn't define the impact you can have around here.

Benefits and Compensation

Luring you in with glitter, glamour, and gems isn't what we're about. We want you to enjoy your time here fully, so we structure our compensation and benefits with that in mind. It starts with perceiving you as a human being, not a resource.

Relocation? Yes!

No matter where you’re moving from, our dedicated mobility team and partners will support you throughout your move. We’ll ensure the process is as smooth as possible for you and anyone joining you – whether they’re family members of the human or animal kind!

Not Sure if You Should Apply?

Many candidates with great skills and experience second-guess themselves. The bar is high, but We’re here to help you succeed. Also, we're happy to learn about any specific accommodations you may need to fully engage in our recruitment process.