Backend Engineer - Transfers Gateway
Core
Build and maintain production money movement backend services connecting SumUp's internal systems to external financial networks across the EU and UK.
Role type
Backend Engineer (Payments/Financial Infrastructure)
Builds
End-to-end scheme integrations and production services that process real money at scale for merchants.
Domain
Fintech / Payments / Banking Infrastructure
Deliverable
production ML models | product features | infrastructure
Required skills
Go, AWS, Kafka, PostgreSQL, Kubernetes, system architecture, API design, automated testing, observability (Prometheus, Grafana, Honeycomb)
Preferred skills
Banking or payments domain experience, incident response experience, AI-assisted development tools
Technologies
Go, AWS, Kafka, PostgreSQL, Kubernetes, Prometheus, Grafana, Honeycomb, Cursor, GitHub Copilot
Responsibilities
Build and maintain production money movement backend services; Own and deliver well-defined tasks and features; Contribute to technical design and implementation; Improve service reliability and quality by writing tests and enhancing monitoring; Support system operation via on-call rotations and incident response; Collaborate with Product, QA, and other engineers to deliver end-to-end transfer capabilities.
Seniority
Mid-level (Level 3), hands-on IC
