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 v

📌 Backend Developer (Madrid)
🏢 Talent Connect
📍 Madrid