Senior Backend Engineer - Accounts
SumUpSofia, Sofia-City, Bulgaria
Posted February 11, 2026
Full Time
About the Company
SumUp is a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care.
Job Description
We're building the infrastructure to provide merchants with a digital business account that empowers them to manage their banking needs. As a Senior Backend Engineer, you'll help us design and build a fully distributed, event-driven system designed to scale across regions with resilience and compliance built in.
Requirements
- Strong technical foundation in Kotlin, with interest in working across multiple languages (Golang, Elixir)
- Event-driven architecture expertise, with proven experience with Kafka and event-driven systems
- Distributed systems mastery, with hands-on experience with AWS, Docker, Kubernetes, cloud-native architectures, and relational databases
Benefits
- Career growth and learning opportunities
- Sabbatical program for tenured SumUppers
- Health & wellness benefits
- Subsidized Public Transport Card
- Kita placement assistance
- Pension Scheme
- Language Learning platform/courses
- Enrollment onto our virtual stock ownership program