SeniorJavaDeveloper

How do you help make a difference? As a Senior Java Developer – Commercial channels and products (Doli), you contribute to the design, development, and maintenance of backend components and RESTful APIs supporting enterprise-grade applications within SNCB/NMB. You ensure that backend services are robust, scalable, and maintainable, contributing directly to reliable digital services that support operational and customer-facing systems. Your scope covers backend services, integrations, and APIs, working closely with architects, analysts, DevOps engineers, and development teams. What is your role at Ypto? As a Senior Java Developer, you will take on the following responsibilities: * You design, develop, and maintain backend services and REST APIs using Java and Spring Boot. * You ensure code quality through unit, integration, and performance testing. * You conduct code reviews, promote best practices, and mentor junior developers. * You collaborate with architects, analysts, and DevOps engineers to define and refine technical solutions. * You support deployment, cutover, and hypercare phases, ensuring stable releases. * You troubleshoot and resolve production issues, ensuring system performance and reliability. ## Requirements Why is this job a good fit for you? You have proven experience in Java development and backend engineering, with extensive exposure to enterprise environments, microservices, and integration-heavy systems. You also possess these technical skills: * You have a minimum of 10 years working experience as a Java developer. * You have demonstrable experience of minimum 5 years with microservices architecture. * You have demonstrable experience of minimum 5 years with SOAP. * You have proven experience of minimum 5 years in building cash desk tools used at service counters to sell tickets, manage operator sessions, and handle cash transactions. * You have 5 years of experience integrating hardware components into IT systems, such as payment terminals, s