Senior Backend Engineer (TypeScript / Nest.js / AWS)

Full-time B2B | Remote EU / Poland | US Insurance Context | Start October 2026

We are an AI-native data and technology partner for private capital and healthcare. Founded in 2010 and headquartered in Warsaw, we work with leading PE firms, VC funds, and healthcare organizations to build proprietary data infrastructure, deploy AI solutions, and drive AI-native transformation.

Our clients manage a cumulative $1.2T+ in assets. Our average engagement runs five years. Our NPS sits above 80. We don't need to claim credibility - we can show it.

We've also done to ourselves what we now do for clients. We've restructured our own company around AI - tools, policies, roles, delivery models. This isn't a pitch. It's a playbook we've already run, and we're hiring the engineers who will run it for others.

The Opportunity

Our client is a US insurance carrier building a platform business on top of its own paper: a set of operational services it offers to the specialist insurers (MGAs) it underwrites for. The first service is claims - the carrier is becoming the claims administrator for its partners, running their claims in a shared instance of a modern claims platform. That platform only knows how to talk to one policy system, and every partner has their own. The missing piece is a multi-tenant policy gateway, and it is the blocking dependency for the first partner's go-live at the start of 2027.

You'll be the