12 hours ago
Sofia, BulgariaSenior
Responsibilities
- Own and lead end-to-end delivery of backend services within the Cards EU domain.
- Design and propose solutions for complex distributed-systems challenges and contribute to the technical roadmap.
- Write pull requests, conduct code reviews, and maintain code quality and test coverage.
- Collaborate with adjacent engineering squads and the product manager to shape the squad backlog.
- Participate in incident reviews and the on-call rotation while taking accountability for service reliability.
- Apply and champion AI tooling to accelerate engineering workflows and improve team AI literacy.
Requirements
- Solid hands-on experience delivering production-ready backend services end-to-end, including testing, monitoring, and maintenance, on a modern cloud-native stack.
- Production experience with Kotlin and openness to work with Elixir, Java, or Golang.
- Understanding of distributed systems, API design, data modelling, and relational databases.
- Hands-on experience with containerisation, orchestration, and CI/CD practices.
- Ability to define technical approaches for ambiguous product problems and lead implementation with minimal guidance.
- Ability to collaborate across teams and communicate clearly in professional English.
- Curiosity about the product domain and ability to consider user experience beyond the code.
Benefits
- Office-first work setup from SumUp’s modern Sofia office, with global collaboration.
- Virtual Stock Option programme.
- €2000 annual learning and development budget and 10 paid days of educational leave.
- 25 days of paid leave plus an additional day per year of service up to 35 days, public holidays, and special leave options.
- Additional health insurance and life insurance.
- On-site yoga and a co-sponsored Multisport card.
- Tax-free food vouchers and flexibility through the Re:Benefits platform.
- Free shuttle buses to Joliot-Curie metro station.
- One-month sabbatical after three years of service.
- Referral bonus programme.
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.