Senior Java Backend Engineer - WCS Migration

We are looking for a Senior Java Backend Engineer with strong experience in Java, Spring, MongoDB and IBM WebSphere Commerce (WCS) to support a major platform modernisation initiative. The team is migrating away from WCS as the source of truth towards a modern backend stack based on Java/Spring and MongoDB . The key requirement is strong hands-on WCS knowledge , particularly around the underlying infrastructure, codebase, build and deployment processes, and access management. Requirements Key Responsibilities - Work as part of a team migrating functionality and data away from WCS as the source of truth . - Develop and maintain backend services using Java and Spring/Spring Boot . - Work with MongoDB as part of the target backend architecture. - Analyse and navigate the existing WCS codebase to understand business logic, integrations and dependencies. - Provide technical guidance on WCS infrastructure and architecture . - Understand and support existing WCS build, deployment and release processes . - Troubleshoot WCS environments and resolve infrastructure/application issues. - Support access, configuration and environment management across WCS. - Help identify and migrate relevant functionality from WCS into the new Java/Spring/MongoDB stack. - Collaborate with engineering, architecture and DevOps teams throughout the migration. - Contribute to improving build, deployment and operational processes. - Support the team in reducing dependency on WCS and transitioning towards the new platform. Required Skills & Experience - Strong experience as a Senior Java Backend Engineer . - Hands-on experience with Java and Spring/Spring Boot . - Strong experience with MongoDB or similar NoSQL databases. - Strong hands-on experience with IBM WebSphere Commerce (WCS) is essential. - Good understanding of WCS infrastructure and environments . - Experience navigating and troubleshooting large WCS codebases . - Strong understanding of WCS build and deployment processes . - Experience managing or troubleshooting WCS access and environment configuration . - Experience working on complex enterprise e-commerce platforms. - Ability to understand existing legacy systems and support migration to modern architectures. Nice to Have - Experience with Microsoft Azure . - Experience with DevOps / CI/CD . - Experience with Azure DevOps, pipelines and deployment automation. - Experience with containerisation and Kubernetes. - Experience in e-commerce / retail environments. - Experience migrating from legacy commerce platforms to modern microservices architectures. Benefits We offer - Flexible working hours (self-managed) - Annual bonus, subject to company performance - Access to Udemy online training and opportunities to learn and grow within the role At Mindera we use technology to build products we are proud of, with people we love. Software Engineering Applications, including Web and Mobile, are at the core of what we do at Mindera. We partner with our clients, to understand their products and deliver high-performance, resilient and scalable software systems that create an impact on their users and businesses across the world. You get to work with a bunch of great people, and the whole team owns the project together. Our culture reflects our lean and self-organisation attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication. We are proud of our work and we love to learn all and everything while navigating through an Agile, Lean and collaborative environment. Our offices are located: Porto, Portugal | Aveiro, Portugal | Coimbra, Portugal | Leicester, UK | San Diego, USA | Chennai, India | Bengaluru, India