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

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.

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📌 Backend Developer (Java / Spring Boot / AWS) - Spain (Hybrid/Remote) - Madrid, Comunidad de Madrid, Spain
🏢 Talent Connect
📍 Madrid