Senior Software Engineer (Backend) – Java

📍 Kraków | Hybrid (2x day per week from the office)

 

We are looking for an experienced Senior Software Engineer (Backend) to join a global technology team working on a large-scale payments platform that enables businesses and customers worldwide to move funds quickly and securely across markets.

The platform supports international transfers, supplier payments, payroll processing, and payments to authorities across multiple channels. You will contribute to building modern, scalable systems used globally.

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What you will be doing

• Design, develop and maintain backend services and microservices in Java
• Build scalable REST APIs supporting a global payments platform
• Contribute to the migration from legacy systems to a modern microservices architecture
• Work with Kubernetes-based platforms and cloud-native environments
• Improve system reliability, performance and Straight‑Through‑Processing (STP) capabilities
• Collaborate with international engineering teams, DevOps and product stakeholders
• Contribute to test automation and modern CI/CD practices

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What we are looking for

• Strong experience with Java (11+), ideally Java 17+
• Experience building microservices and REST APIs
• Hands-on experience with Kubernetes
• Solid knowledge of SQL and relational databases (Oracle is a plus)
• Experience with Git and modern development workflows
• Comfortable working in Unix/Linux environments
• Understanding of DevOps ways of working

Nice to have:

• Experience with Spring / Spring Boot
• Experience with React or modern frontend technologies
• Familiarity with application monitoring / observability tools

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What we offer

• Opportunity to work on a global, high-scale payments platform
• Collaboration with international engineering teams
• Modern technology stack and cloud-native environment
• Hybrid work model in Kraków