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JuniorFull-timeJavaGolangAWSKubernetesDockerPostgreSQLREST APIMicroservicesGo
Salary Range
$66,300 - $89,700 /year
This salary is estimated based on similar roles. The actual salary may vary.
About the Role
We are looking for a Junior Backend Engineer to join our Payments Processing team at SumUp in Sofia. You'll work on strategic initiatives to consolidate payment processing capabilities for both in-person and online alternative payment methods.
Key Responsibilities
- →Build and maintain Go-based backend microservices for the Payments Processing domain
- →Deliver daily maintenance, compliance, and support tasks alongside senior engineers
- →Work with event-driven architectures using Kafka and RESTful APIs
- →Participate in code reviews and contribute to engineering best practices
- →Collaborate cross-functionally with Hardware, Online Payments, POS tribes, and local market teams
Requirements
- ✓Experience or strong interest in Go (Golang)
- ✓Backend programming experience with core concepts like REST APIs, data structures, and concurrency
- ✓Familiarity with SQL and/or NoSQL databases (CockroachDB, PostgreSQL, Kafka)
- ✓Eagerness to learn system architecture, software design principles, and data modeling
- ✓Open to feedback, collaborative, and willing to ask questions or pair with teammates
- ✓Motivation to solve engineering problems that deliver real business value
- ✓Ability to handle and learn multiple tech stacks (Go and Java)
Benefits
- ★Work at a global fintech company with real impact on millions of merchants worldwide
- ★Mentorship-first culture with close collaboration with senior and mid-level engineers
- ★Modern tech stack: Go, Kafka, CockroachDB, PostgreSQL, AWS, Kubernetes
- ★Sofia office-based role in a collaborative, international environment
- ★€2,000 annual L&D budget for conferences or education
- ★25 days of paid leave (increasing with tenure), plus paid vacations and a 1-month sabbatical every 3 years
- ★Health and life insurance, co-sponsored Multisport cards, childbirth/adoption bonuses, discounts, referral program, monthly food vouchers, flexible benefits
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