14 days ago
Berlin, GermanySenior
Responsibilities
- Design, build, and operate backend services, APIs, integrations, event-driven workflows, and distributed systems, primarily using Go.
- Define service boundaries, data models, schemas, API contracts, versioning, and integration patterns for other teams.
- Build capabilities supporting merchant acquisition, identity, marketing technology, operations, risk, and compliance.
- Own technical work from discovery and system design through implementation, testing, deployment, and production follow-up.
- Modernize existing services and improve reliability through observability, security, failure handling, and incident response.
- Collaborate with Product, Data, Operations, Compliance, Risk, Sales, Marketing, and engineering teams.
- Review code and designs, make technical trade-offs, share knowledge, and mentor engineers.
Requirements
- Strong backend engineering background in Go, or experience as a typed-language generalist able to ramp up quickly.
- Experience designing APIs and distributed systems with clear contracts, versioning, and integration patterns.
- Fluency with relational and analytical databases including PostgreSQL and Snowflake.
- Experience building Kafka-based event-driven systems and understanding event sourcing and CDC patterns.
- Experience with auditable, high-trust systems such as fintech or payments platforms.
- Experience with testing, observability, and incident response practices.
- Ability to take ownership of ambiguous problems and create scalable, maintainable solutions.
- Clear communication, effective collaboration, and the ability to explain technical concepts and trade-offs to varied audiences.
- Commitment to pragmatic engineering, continuous improvement, mentoring, and reliable production operations.
Benefits
- Berlin-based office-first work setup.
- Global collaboration on large-scale fintech products used by millions of businesses.
- Hack Days every second Friday and global Hack Weeks.
- Annual learning and development budget for conferences or further education.
- Enrollment in SumUp’s VSOP program.
- Corporate pension scheme with employer contribution matching.
- 30-day sabbatical after completing three years of employment.
- Referral bonus.
- Urban Sports Club subsidy, Kita placement assistance, relocation assistance, and subsidized office lunches.
Tech Stack
Categories
About SumUp
SumUp builds card readers, point-of-sale apps, and payment tools for small businesses, along with accounts, invoicing, and online checkout. It sells hardware and earns fees on payment processing and subscriptions for software and services such as invoicing and loyalty. Founded in 2012 and headquartered in London, the company serves more than 4 million merchants across 30+ markets, and offers options like payment links and Tap to Pay.