Backbase is seeking a Senior Backend Engineer to join their team in Cardiff. This role focuses on integrating the Backbase platform into customer systems through hands-on development and client collaboration. The position requires extensive travel (approximately 6-month implementations) to work directly with customer developers on-site. As a Senior Backend Engineer, you'll be responsible for writing high-quality code, conducting testing, and serving as a technical expert for backend-related matters. The role combines technical expertise in Java, Spring, and Microservices with client-facing responsibilities including training and coaching developers. You'll work in an Agile environment, handling high-pressure situations and meeting demanding customer expectations. The ideal candidate should be adaptable to different work cultures, as this is a global-scale position. This role offers the opportunity to work on complex integration projects while contributing to reusable component development, making it perfect for developers who enjoy both technical challenges and collaborative work.