Senior Java Developer

Job description

We are looking for Senior Java Developers to join a long-term payments technology programme focused on terminal management systems supporting more than 300,000 payment terminals across multiple hardware vendors. The role combines backend development, integrations, and system modernisation within a complex enterprise payments environment. This is a hands-on Java role working across both legacy and modern architectures, including migration from WildFly-based systems to Spring Boot microservices, with strong focus on integrations, distributed systems, and payment infrastructure reliability. Responsibilities: - Design and implement IT solutions based on analytical and technical documentation - Review analytical documentation and translate it into technical implementation - Create and maintain technical documentation - Support technical upgrade and modernisation of the existing system - Work with legacy code and contribute to gradual system migration - Conduct regular application scans and remove vulnerabilities - Build and maintain integrations with internal and external systems - Work with distributed transactions, queues, caching, and database integrations Requirements: - Very good k...