Senior Infrastructure Engineer, IT

About the role

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We’re looking for a Senior Infrastructure Engineer to join the IT Infrastructure team. The team that runs the plumbing that makes Supercell offices work: network, identity, hosting, monitoring and the glue between them. Your customers will be the rest of the company - in Helsinki, London, San Francisco, Seoul, Shanghai and remote. Your job is to give them a platform that works and stays out of their way.

We are currently in the process of modernizing our stack to run on terraformed AWS. The groundwork is done; what’s left is the hard part: powering down our VMware clusters, decommissioning Active Directory and re-working our PKI. We’re not just lifting and shifting VMs into the cloud. Every service gets a critical look before it moves - retire it, replace it with something managed, or rebuild it the way it should have been built - and we’re not building a spaceship where a bucket would do. To get there we want one more team member to own how we do cloud and infrastructure-as-code: how we build on AWS, how our Terraform is structured and reviewed, how AI plays into that and what we take on next. Oh, and now that AI agents are users too, we need to reflect that in our identity and monitoring platforms too.

We’re a small team that owns our domain together, and divides work by what makes sense. We share what we learn, failures included. Some of us are highly specialised, some are generalists. Your role would be to bring the depth on AWS, IaC and Linux. This is not a pure build role: keeping the lights on, helping other teams and pitching in on whatever is on fire this week is part of the job for all of us as well.

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WHAT YOU'LL BE DOING

- Own how we build on AWS: account structure, guardrails, service choices, cost. You’re the person the rest of us sanity-check our cloud designs with, and the one who explains why the answer is what it is.

- Own our infrastructure-as-code practice: Terraform modules, workflows, testing and review. Set the standard, teach it through reviews and pairing, and make it the easiest path so the team builds the same way with or without you in the loop.

- Drive automation across the team: spot what’s worth automating, build it, and keep it maintained after the novelty wears off. You will also help us level up our AI game and bring meaningful automation updates at the team and company level.

- Keep an eye on how other teams run AWS, and know when to adopt and integrate their practices and solutions instead of reinventing the wheel.

- Operate what you build, and take your turn as first responder. Things break, and the unknown unknowns are part of the job. We rotate who handles escalations during business hours so the rest of the team can focus. No 24/7 on-call required.