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.

No deje pasar esta oportunidad, inscríbase rápidamente si su experiencia y habilidades coinciden con lo que se indica en la siguiente descripción.

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 Spring DataProfessional 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 servicesOpenAPI/Swagger specificationsDeep understanding of cryptography concepts and tooling:PKI, X.509 certificatesSecure key management and cryptographic protocolsExperience in agile teams (Scrum) with:TDD and BDDAutomated testing strategiesSecurity testing (SAST, DAST)Familiarity with large-scale, high-availability, enterprise-grade systems.Hands-on experience with Atlassian and DevOps tooling:Jira, ConfluenceGit (GitLab/GitHub)SonarQube, Jenkins, Nexus, MavenStrong 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 HaveExperience 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, payment systems, or digital currency projects.This role is ideal for a senior backend engineer who enjoys working on secure, high-availability microservices, is comfortable with advanced cryptography, and wants to drive automation and quality across the entire delivery lifecycle.What we offerCULTURE: Join a professional, dynamic environment where collaboration, teamwork, and innovation are valued.PHILOSOPHY: Be part of a team where your ideas and contributions have real impact.SCHEDULE: Mon–Thu 8:30–17:30h, Fri 8:30–15:30h (1h versátil start time).

Hybrid work options available.CONTRACT &

BENEFITS: Permanent contract, annual training plan, summer intensive schedule, company parking, flexible compensation (transport, childcare, training, health insurance).CANTEEN: Onsite cafeteria with breakfast and lunch at subsidized prices.LOCATION: El Prat de Llobregat, Mercabarna exit.

Accessible via Bus 88/110 from Barcelona or PR4 from El Prat. xugodme Explore what makes G+D unique – check out this video: Giesecke+Devrient – We make the lives of billions of people more secure.Privacy NoticeThe personal data you provide will be processed to manage your application in accordance with the GDPR and our Privacy Policy, available at Data Privacy | G+D.

📌 Senior Java Backend Developer - Cloud-Native Microservices & Cryptography (España)
🏢 Giesecke+Devrient
📍 España