Senior Java Backend Developer – Cloud-Native Microservices & CryptographyWe 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 ResponsibilitiesLead 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 CloudSpring DataImplement and maintain API-first architectures (REST, OpenAPI), ensuring clear contracts and maintainable integrations.Build, deploy, and operate cloud-native applications using:Docker containersKubernetes (K8s)CI/CD pipelines and automation toolingImplement secure cryptographic operations, including:PKI-based workflowsX.509 certificate lifecycle managementEncryption, signing,



and key management best practicesDesign data models and access layers using MongoDB for scalable, high-performance storage.Drive automated testing and quality assurance:TDD and BDDUnit, integration, and end-to-end test automationSecurity 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 & ExperienceUniversity degree in Computer Science, Software Engineering, or a related field.Extensive experience as a senior backend Java developer.Strong, hands-on expertise with:Spring Boot (v4), including Spring Boot ActuatorSpring Cloud and Sprin

📌 Senior Java Backend Developer (España)
🏢 Giesecke+Devrient
📍 España