Senior Java Backend Developer - Cloud-Native Microservices & Cryptography

Giesecke+Devrient; el Prat de Llobregat; Híbrido; EUR 90.000 - 120.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work options

Onsite cantine

Annual training plan

Company parking

Descripción de la vacante

Giesecke+Devrient seeks 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. Focus on backend development with Spring Boot 4, cryptographic operations, automation, and test-driven practices in a Kubernetes-based environment.

Responsibilities include API-first REST/OpenAPI, Docker/Kubernetes deployment, PKI workflows, MongoDB data modeling, and extensive automated testing.

Formación

• University degree in Computer Science or related field.
• Extensive experience as a senior backend Java developer.
• Strong hands-on expertise with Spring Boot 4, Spring Cloud and Spring Data.
• Experience designing microservices in cloud-native environments.
• Proficient in MongoDB, Docker, and Kubernetes.
• API-first design with REST/OpenAPI.

Responsabilidades

• Lead end-to-end development of TSM backend services.
• Develop robust Java backend applications with Spring Boot.
• Implement API-first architectures (REST, OpenAPI).
• Build and operate cloud-native apps with Docker and Kubernetes.
• Implement cryptographic operations and PKI workflows.
• Design data models and access layers with MongoDB.
• Drive automated testing: TDD/BDD, unit/integration tests.
• Promote Scrum, secure coding practices.
• Mentor team members and collaborate with stakeholders.
• Contribute to observability with Actuator and monitoring.

Conocimientos

Spring Boot 4

Spring Cloud

Spring Data

REST APIs

OpenAPI

Docker

Kubernetes

TDD/BDD

Crypto/Security

MongoDB

Jira/DevOps tooling

English communication

Educación

University degree in Computer Science

Herramientas

Jira

Confluence

Git

SonarQube

Jenkins

Nexus

Maven

Descripción del empleo

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.

• 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
  • CI/CD pipelines and automation tooling
    
• Implement secure cryptographic operations, including:
  • PKI-based workflows
  • 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.
  

G+D hace más segura la vida de miles de millones de personas en todo el mundo. Creamos confianza en la era digital con tecnologías de seguridad integradas en tres áreas de negocio: Seguridad Digital, Plataformas Financieras y Tecnología Monetaria. Hemos sido un socio confiable para nuestros clientes durante más de 170 años con nuestras soluciones innovadoras para SecurityTech! Somos un grupo tecnológico internacional y una empresa familiar tradicional con más de 14,000 empleados en 40 países. Crear Confianza es nuestro camino hacia el éxito. La confianza es la base de nuestra cooperación en G+D. ¿Quizás es pronto para ti también?

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.
• 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.509 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, 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 offer

• CULTURE: 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 flexible 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.
  

Código de identificación: 27756

Gracias.