Senior Java Backend Developer – Cloud-Native Microservices & Cryptography We are looking for a Senior Java Backend Developer to lead the design, development, and maintenance of secure, scalable, cloud-native microservices for our Trusted Service Manager (TSM) platform. This role focuses on backend development with Spring Boot 4, cryptographic operations, automation, and test-driven practices in a Kubernetes-based environment. Key Responsibilities * Lead the end-to-end development and implementation of TSM backend services and microservices. * Design, develop, and optimize robust Java backend applications using: * Spring Boot 4 (including Spring Boot Actuator) * Spring Cloud * Spring Data * Implement and maintain API-first architectures (REST, OpenAPI), ensuring clear contracts and maintainable integrations. * Build, deploy, and operate cloud-native applications using: * Docker containers * Kubernetes (K8s) * CI/CD pipelines and automation tooling * Implement secure cryptographic operations, including: * PKI-based workflows * X.509 certificate lifecycle management * Encryption,



signing, and key management best practices * Design data models and access layers using MongoDB for scalable, high-performance storage. * Drive automated testing and quality assurance: * TDD and BDD * Unit, integration, and end-to-end test automation * Security testing (SAST, DAST) * Apply and advocate agile methodologies (Scrum), engineering best practices, and secure coding standards. * Collaborate closely with architects, product owners, QA engineers, and other developers to deliver high-quality solutions. * Guide and mentor other team members, promoting knowledge sharing and continuous improvement. * Contribute to observability and operations using Spring Boot Actuator and monitoring/logging tools. Required Skills & Experience * University degree in Computer Science, Software Engineering, or a related field. * Extensive experience as a senior backend Java developer. * Strong, hands-on expe

📌 Senior Java Backend Developer (Sant Joan Despí)
🏢 Giesecke+Devrient
📍 Sant Joan Despí