Backend Developer (Java / Spring Boot / AWS) - Spain (Hybrid/Remote)

Backend Developer (Java / Spring Boot / AWS) - Assisted Channels

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Spain | Hybrid in Madrid, Barcelona, Málaga or Logroño | Remote in the rest of the country

Full-time

About The Role

We are looking for experienced Backend Developers specialized in Java and Spring Boot, with strong expertise in microservices architectures and cloud-native development in AWS environments. You will join an international digital transformation project focused on building scalable backend services, event-driven architectures, and modern API ecosystems within a high-availability environment.

This role combines backend engineering, cloud-native development, integrations, and modern architectural practices.

What you’ll do

• 
  
• Design and develop scalable microservices using Java and Spring Boot
  
• Define and implement RESTful APIs ensuring performance, scalability, and security
  
• Apply clean architecture principles, including hexagonal architecture (ports & adapters)
  
• Develop and maintain persistence layers using PostgreSQL and JPA/Hibernate
  
• Build and maintain serverless components using AWS Lambda
  
• Contribute to event-driven architectures using AWS services such as SQS and EventBridge
  
• Integrate internal and external systems, including CRM platforms via OData
  
• Write and maintain unit and integration tests
  
• Collaborate with DevOps and cloud teams in AWS environments
  
• Follow best practices in CI/CD, version control, and code quality
  

What we’re looking for

• 
  
• +3 years of professional experience in backend development
  
• Strong hands-on experience with:
  
  • 
    
  • Java
    
  • Spring Boot
    
  • Microservices architectures
    
  
  
  
• Experience designing and implementing:
  
  • 
    
  • REST APIs
    
  • API versioning and documentation
    
  
  
  
• Strong knowledge of:
  
  • 
    
  • PostgreSQL
    
  • JPA / Hibernate
    
  
  
  
• Experience with:
  
  • 
    
  • JUnit
    
  • Mockito
    
  • unit and integration testing
    
  
  
  
• Experience working in AWS environments and cloud-native architectures
  
• Understanding of clean architecture principles and separation of concerns
  
• Spanish fluent/native level
  
• English B2 (spoken and written) – required
  

Highly valued

• 
  
• Experience with:
  
  • 
    
  • AWS Lambda
    
  • Event-driven architectures
    
  • Amazon SQS
    
  • Amazon EventBridge
    
  • Kafka or similar technologies
    
  
  
  
• Experience integrating with:
  
  • 
    
  • Microsoft Dynamics
    
  • OData protocols
    
  
  
  
• Knowledge of:
  
  • 
    
  • Hexagonal Architecture
    
  • Domain-Driven Design (DDD) principles
    
  
  
  

Work model

• 
  
• Hybrid model available in:
  
  • 
    
  • Madrid
    
  • Barcelona
    
  • Málaga
    
  • Logroño
    
  
  
  
• Remote from other locations within Spain
  

Note

We are looking for backend-focused engineers with strong experience building modern Java microservices and cloud-native systems. This is a highly technical and hands‑on role within a collaborative engineering environment. xcskxlj

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