Senior Backend Engineer - Golang

In the Global Bank tribe, we're building the infrastructure to provide merchants with a digital business account that empowers them to manage their banking needs. Our goal is to become the most popular banking partner for small merchants globally with an effortless, simple, and affordable experience.

As part of the Bank Activation and Revenue team, you will join a high-impact growth engine within the bank. Our mission is to guide merchants in unlocking the most value out of their SumUp Business Account during their activation journey: we aim to convert 100% of SumUp’s ecosystem users into active Bank users.

We own the critical journey from the moment a merchant opens an account until they understand how the business account can solve their business needs, making it part of their daily routine. To achieve this at scale, we are building a greenfield activation and engagement platform consisting of a series of initiatives and experiments to drive adoption and engagement of SumUp users with the business account. Your work will directly drive revenue by enabling seamless cross-selling of the entire SumUp product suite to millions of merchants.

What You’ll Do

Build Greenfield Services: Design and implement the trifecta of services (Banners, Rewards, and Feature Toggles) from the ground up to power global product experimentation.

Drive Activation: Create the technical logic that tracks and incentivizes users through their first five meaningful transactions, ensuring a smooth path to becoming a long-term banking partner.

Own the Stack E2E: We follow a “build it, run it, own it” model. You will be responsible for the full lifecycle of your features, from architectural design to production monitoring.

High-Velocity Engineering: Participate in a culture of daily deliveries. We value moving fast, testing hypotheses, and iterating based on real-world data.

Bridge Client & Backend: Build robust APIs that power the mobile and web banking experience while managing complex a