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

Talent Connect; Madrid; Híbrido; EUR 40.000 - 60.000; Jornada completa

Descripción de la vacante

Talent Connect is seeking experienced Backend Developers for a hybrid role in Spain, primarily focused on Java, Spring Boot, and AWS development. The ideal candidate will have over 3 years of experience in backend development, designing and implementing scalable microservices and RESTful APIs. Proficiency in PostgreSQL and a strong understanding of microservices architectures are essential. Fluency in Spanish and B2 English is required. The position offers flexibility to work remotely or on-site across various Spanish cities.

Formación

• 3+ years of professional experience in backend development.
• Strong hands-on experience with Java and Spring Boot.
• Experience with PostgreSQL and JPA/Hibernate.

Responsabilidades

• Design and develop scalable microservices using Java and Spring Boot.
• Define and implement RESTful APIs ensuring performance and security.
• Collaborate with DevOps and cloud teams in AWS environments.

Conocimientos

Java

Spring Boot

Microservices architectures

PostgreSQL

AWS

JUnit

Mockito

Clean architecture principles

English (B2)

Spanish (Fluent)

Herramientas

AWS Lambda

Kafka or similar technologies

Descripción del empleo

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.