Senior Software Engineer

all positions Helsinki – onsite – FullTime Senior Software Engineer, Supercell ID 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 playersOwn systems end-to-end – from architecture decisions through production operationCollaborate with stakeholders to define requirementsParticipate 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 brokeA security mindset – you think about threats and vulnerabilities during design, not after launchAbility to break down complex problems into incremental deliverables that each bring valueFamiliarity with cloud infrastructure (AWS preferred) and infrastructure-as-code (Terraform)Proficiency using modern AI-assisted development tools in your day-to-day workExperience driving cross-team projects and working with non-engineering stakeholdersComfort 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 goalsExperience developing AI-assisted engineering workflows or tooling Why This Role Scale: Your work reaches hundreds of millions of players across all Supercell games and servicesOwnership: Small team, big responsibility – you'll shape technical direction, not just execute ticketsImpact: Supercell ID is foundational infrastructure; what you build matters to every game team and every playerEnvironment: High autonomy, low bureaucracy – we trust you to make good decisions Where You Will Be We're open to this role being based in either our Helsinki or London office. However, London-based individuals will be expected to travel regularly to Helsinki, as that is where the majority of this team is based. ––– 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. Once you're ready to apply, just send us your application through the form on the bottom of the page. ––– 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 ™ 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 if this role excites you, apply! 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. Wishing you all the best, The Supercell Recruitment team 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 playersOwn systems end-to-end – from architecture decisions through production operationCollaborate with stakeholders to define requirementsParticipate 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 brokeA security mindset – you think about threats and vulnerabilities during design, not after launchAbility to break down complex problems into incremental deliverables that each bring valueFamiliarity with cloud infrastructure (AWS preferred) and infrastructure-as-code (Terraform)Proficiency using modern AI-assisted development tools in your day-to-day workExperience driving cross-team projects and working with non-engineering stakeholdersComfort 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 goalsExperience developing AI-assisted engineering workflows or tooling Why This Role Scale: Your work reaches hundreds of millions of players across all Supercell games and servicesOwnership: Small team, big responsibility – you'll shape technical direction, not just execute ticketsImpact: Supercell ID is foundational infrastructure; what you build matters to every game team and every playerEnvironment: High autonomy, low bureaucracy – we trust you to make good decisions Where You Will Be We're open to this role being based in either our Helsinki or London office. However, London-based individuals will be expected to travel regularly to Helsinki, as that is where the majority of this team is based. ––– 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. Once you're ready to apply, just send us your application through the form on the bottom of the page. ––– 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 if this role excites you, apply! 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. Wishing you all the best, The Supercell Recruitment team This optional question helps us evaluate how we’re doing on diversity and inclusion. Answering or skipping this question will not affect your job application. The answers to this question are not collected nor seen on an individualized basis. Your answer will be used to assess our diversity and inclusion efforts only. Consent request You are about to consent to the retention of your data by Supercell. Supercell (we, that is) wants to process your data for the next 5 years. We ask for your consent as we want to act in compliance with data protection laws and regulations. We collect your application data to manage and plan our recruitment activities globally. In the unhappy event that you don’t get selected, we will store your details for future opportunities. However, if you don’t wish to be contacted, please let us know. The Supercell Applicant Database Privacy Policy is your friend in case you want to learn about topics such the processing of your personal data as well as when your personal data will be deleted if you don’t give your consent to retain it. Note: The consent period lasts for 5 years