Senior Java Backend Developer

Hace 12 horas

barcelona, catalonia, España Giesecke+Devrient Jornada completa

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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. 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 expertise with: Spring Boot (v4), including Spring Boot Actuator Spring Cloud and Spring Data Professional experience designing and implementing microservices in cloud-native environments. Proficiency in MongoDB, including schema design, performance tuning, and operational considerations. Solid knowledge of Docker and Kubernetes for containerized deployments and orchestration. Proven track record building API-first solutions: RESTful services OpenAPI/Swagger specifications Deep understanding of cryptography concepts and tooling: PKI, X. certificates Secure key management and cryptographic protocols Experience in agile teams (Scrum) with: TDD and BDD Automated testing strategies Security testing (SAST, DAST) Familiarity with large-scale, high-availability, enterprise-grade systems. Hands-on experience with Atlassian and DevOps tooling: Jira, Confluence Git (GitLab/GitHub) SonarQube, Jenkins, Nexus, Maven Strong problem-solving skills, with the ability to troubleshoot complex distributed systems. Excellent communication skills and a collaborative, team-oriented mindset. Fluent English (spoken and written).

Nice to Have

Experience developing SDKs (Java or other languages) for external integration. Knowledge of client application development (e.g., mobile or desktop clients interacting with backend APIs). Background in financial services,

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