Position: Senior Java Backend Developer – Cloud-Native Microservices & Cryptography

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