Staff Software Engineer, Payment Gateway

Trustly moves money between consumers, merchants and banks across the US. We are building our US engineering hubs in San Francisco and New York, starting with a small group of staff engineers who will take technical ownership of our most critical systems.

You will own Payment Gateway end to end: its architecture, its reliability, its operation in production, and where it goes next. You'll own the systems that move money through bank rails once a payment is authorized: rail selection and submission over ACH and RTP, per-bank file formats, our banking partner integrations, and the returns and reversals that come back from the banks.

You'll start by learning a mature, business-critical codebase fast, using AI tools to map it and writing the documentation others will build from. Within your first year, you'll help hire and lead the team that owns it with you.