Senior Backend Engineer - Golang

About the team:

The Commercial Systems and Intelligence squad is a newly formed team within SumUp's Acquisition Mission under the Run & Grow tribe. We sit at the intersection of data, backend engineering, and sales operations, building the infrastructure that powers how SumUp attributes merchant acquisition, calculates commissions, and understands the full lifecycle of every merchant.

Today, these processes are largely manual. We're here to change that, automating what's opaque, and building systems that sales representatives, leadership, and analysts can actually trust. You'll join at the very beginning, helping to shape how the squad works, the architecture it builds on, and the standards it holds itself to.

What you’ll do:

• Aggregating data from across the SumUp ecosystem to determine which acquisition channel or sales agent drove a merchant to take a valuable action (e.g. signing up, adopting a product)
• Establishing data models, API contracts, and rule definitions that automate existing manual commission workflows for field and tele-sales agents, partnerships and merchant referrals
• Build the Lifecycle Event Log in close collaboration with the Merchant Intelligence squad. A centralized store of curated merchant lifecycle events (signups, product usage, verification, purchases) used across attribution, recommendations, customer support and sales
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