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# Backend Java Developer - Microservices, Aws & Ai (Flex)

- **Company:** Arktic
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Artificial Intelligence, Amazon Web Services, Amazon S3, Unit Testing, Cloud Computing, Code Review, Document Management Systems, Hibernate (Java), Java Persistence API, Junit, PostgreSQL, Apache Maven, Mockito, Enterprise Software Applications, Spring-boot, Caching, Backend, Git, Integration Tests, Non-relational Database, Restful APIs, Spring Batch, Golang, Microservices
- **Published:** September 13, 2026
- **Apply:** https://www.buscojobs.com.es/backend-java-developer-microservices-aws-ai-flex-en-madrid-ID-371684212

## About the Role

This is a hands-on backend role focused on performance, scalability, and clean engineering practices.
What you'll do Design, develop, and maintain backend microservices using Java and Spring Boot Build and maintain REST APIs Work with relational and non-relational databases Develop integration and unit tests Collaborate with cloud-native environments on AWS Participate in code reviews and technical discussions Contribute to scalable and maintainable backend architectures What we're looking for +3 years of hands-on experience developing backend microservices with: Java Spring Boot Spring Batch PostgreSQL Experience working with: REST APIs JPA / Hibernate Relational and non-relational databases Caching technologies Experience with: AWS AWS S3/Lambda Git Maven Experience developing: unit tests (JUnit, Mockito) integration tests Spanish fluent/native level English B2 (spoken and written) - required Nice to have Knowledge of Go / Golang Experience in digital banking or high-transaction environments Experience working in distributed agile teams Work model Hybrid model available in: Madrid
Barcelona Málaga Logroño Remote from other locations within Spain Note We are looking for backend-focused profiles with strong Java and microservices experience.
Experience limited to document management platforms or unrelated enterprise systems will not be considered relevant for this role.

## Description

Overview Senior Backend Java Developer (Microservices / AWS) (2) - Spain | Hybrid in Madrid, Barcelona, Málaga or Logroño | Remote in the rest of the country Full-time We are looking for Senior Backend Java Developers to join an international digital banking project focused on building scalable, cloud-native backend solutions.You will work on the development of modern microservices architectures within a high-availability environment, collaborating with distributed engineering teams in an agile ecosystem.This is a hands-on backend role focused on performance, scalability, and clean engineering practices.What you'll do Design, develop, and maintain backend microservices using Java and Spring Boot Build and maintain REST APIs Work with relational and non-relational databases Develop integration and unit tests Collaborate with cloud-native environments on AWS Participate in code reviews and technical discussions Contribute to scalable and maintainable backend architectures What we're looking for +3 years of hands-on experience developing backend microservices with: Java Spring Boot Spring Batch PostgreSQL Experience working with: REST APIs JPA / Hibernate Relational and non-relational databases Caching technologies Experience with: AWS AWS S3/Lambda Git Maven Experience developing: unit tests (JUnit, Mockito) integration tests Spanish fluent/native level English B2 (spoken and written) - required Nice to have Knowledge of Go / Golang Experience in digital banking or high-transaction environments Experience working in distributed agile teams Work model Hybrid model available in: Madrid Barcelona Málaga Logroño Remote from other locations within Spain Note We are looking for backend-focused profiles with strong Java and microservices experience.Experience limited to document management platforms or unrelated enterprise systems will not be considered relevant for this role.How to apply Please follow the kinl and apply right away!#J-*****-Ljbffr


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