Principal Engineer - Platform

What you need

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

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