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# Senior Backend Engineer - Run & Grow

- **Company:** SumUp
- **Location:** Berlin, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Code Review, Databases, Distributed Systems, PostgreSQL, Systems Integration, Management of Software Versions, Snowflake, Backend, Event Driven Architecture, Apache Kafka, Event Sourcing, Api Management
- **Published:** October 8, 2026
- **Apply:** https://startup.jobs/senior-backend-engineer-run-grow-sumup-10186845

## About the Role

* Bring a strong backend engineering background in Go, or are a typed-language generalist ready to ramp up quickly
 * Have designed APIs and distributed systems with clear contracts, versioning, and integration patterns
 * Are fluent in relational and analytical databases (PostgreSQL, Snowflake) and comfortable making the right choice for the right use case
 * Have built Kafka-based, event-driven systems and understand event sourcing and CDC patterns
 * Have experience in auditable, high-trust systems where every decision must be traceable fintech, payments, or similar domains
 * Have experience with testing, observability, and incident response practices and treat them as first-class concerns, not afterthoughts
 * Take ownership of ambiguous problems and turn them into clear, scalable, and maintainable solutions.
 * Communicate clearly, collaborate effectively, and explain technical concepts and trade-offs to different audiences.
 * Value pragmatic engineering, continuous improvement, mentoring, and reliable production operations.

## Description

* Design, build, and operate production-grade backend services, APIs, and integrations, primarily using Go.
 * Build event-driven workflows and distributed systems using technologies such as Kafka and asynchronous processing.
 * Define clear service boundaries, data models, schemas, and API contracts that other teams can use confidently.
 * Build capabilities supporting merchant acquisition, identity, marketing technology, operations, risk, and compliance.
 * Own technical work end to end, from discovery and system design through implementation, testing, deployment, and production follow-up.
 * Modernise existing services and improve reliability through observability, security, failure handling, and incident response.
 * Collaborate with Product, Data, Operations, Compliance, Risk, Sales, Marketing, and other engineering teams to turn complex requirements into practical solutions.
 * Review code and designs, make pragmatic technical trade-offs, share knowledge, and mentor engineers around you