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)
🏢 Talent Connect
📍 Madrid