Senior Backend Engineer (Golang) - Bank Balance

The role

You will build and evolve core banking services for ledger operations and transactions. You will modernize regional systems into a unified global platform and tackle complex distributed systems challenges.

What you will do

• Build and evolve core banking services for ledger operations and transactions
• Transform regional systems into a unified, scalable global platform
• Tackle complex distributed systems challenges
• Support modernization initiatives through observability, test coverage, and refactoring
• Contribute to key architectural decisions for ledger and transaction history systems
• Collaborate with Risk, Treasury, Finance, and Infrastructure teams
• Take ownership from design to production
• Monitor service performance and continuously improve software delivery

Required qualifications

• Solid backend experience building reliable, high-volume services
• Proficient in Golang
• Comfortable learning and working with other languages like Kotlin or Elixir
• Write maintainable, well-tested code
• Follow CI/CD best practices
• Take responsibility for software from development to production
• Comfortable building, deploying, and running services in cloud environments like AWS using Docker and Kubernetes
• Fluent in relational databases that perform well under load and maintain data consistency

Nice to have

• Deeper PostgreSQL experience including performance tuning, complex queries, or schema design
• Experience with event streaming platforms (Kafka preferred)
• Experience with modern observability stacks (Grafana, Honeycomb, etc.)

Benefits

• Regular training
• Mentorship programs
• SumUp University leadership cohort
• Yearly learning budget (2,000 EUR)
• Sabbatical program for tenured SumUppers
• In-house fitness classes
• Gym in the office
• Subsidized Urban Sports Club
• Available psychotherapy sessions
• Subsidized Public Transport Card
• Kita placement assistance
• Pension Scheme

About the company

SumUp provides simple and affordable business tools to help small businesses start, run, and grow. Over 4 million businesses in 36 markets rely on SumUp as their financial partner.