Senior Backend Engineer - Activation and Revenue
Core
Design and implement backend services (Banners, Rewards, Feature Toggles) to drive merchant activation, engagement, and revenue for SumUp's digital business account.
Role type
Senior Backend Engineer (Growth & Activation)
Builds
Global product experimentation services, activation logic, and cross-selling features for the SumUp Business Account.
Domain
Fintech / Digital Banking
Deliverable
production ML models | product features
Required skills
Golang, system architecture, object-oriented design, functional design, data modeling, RESTful API design, event-driven architecture, Kafka, asynchronous processing
Preferred skills
Growth-focused engineering experience, rules engine development, Reward/Incentive systems, Fintech/Banking regulatory knowledge
Technologies
Golang, Kafka, Kotlin, Elixir
Responsibilities
Design and implement services for global product experimentation; create technical logic to track and incentivize user transactions; own the full lifecycle of features from design to production monitoring; build robust APIs for mobile and web banking experiences; collaborate with engineering teams to ensure scalable integration.
Seniority
Senior, hands-on IC