• You have designed and built platforms or core infrastructure that other engineers relied on every day, and you wrote a meaningful part of the code yourself
• Deep backend and distributed systems experience in production, with the judgement to make architecture calls in a large, existing codebase
• Your own engineering is AI-first: you use agents for work you used to do by hand, and can explain where they help, where they fail, and what changed in speed and quality
• You take a clear position on hard technical questions with incomplete information, defend it with reasons, and change it when the evidence changes
• Engineers outside your own team changed how they work because of something you built and the technical case you made for it
• Able to work from our London, New York or Stockholm office
• Experience with durable workflow orchestration, for example Temporal or Azure Durable Functions, and a clear view on when it is worth it, since long-running agent work has to survive failure
• Work where software meets hardware or physical operations, such as connected devices, edge computing or hardware-in-the-loop testing