We're looking for a Lead Java Developer to join our team in Spain in a remote working mode. In this role, you will design and develop scalable, data-driven applications and microservices leveraging Java and cloud-native architectures. You will collaborate with cross-functional teams to simplify user journeys, ensure real-time data integrity and drive high-quality software delivery following Agile principles.

This position offers the opportunity to contribute to the development of business-critical platforms for a leading general financial market infrastructure provider, with exposure to emerging technologies including AI integration and advanced DevOps practices.

Responsibilities

Develop, enhance and maintain Java-based applications using Spring Boot and modern frameworks
Design and implement microservices architectures, adhering to RESTful API standards
Build cloud-native solutions on AWS, including Lambda, API Gateway, DynamoDB and other services
Ensure application reliability and scalability while improving performance and usability
Implement CI/CD pipelines using GitLab,



Terraform and containerization with Docker
Apply TDD principles, covering unit, integration and contract-based testing
Produce clean modular code and maintain comprehensive API documentation with OpenAPI/Swagger
Collaborate with stakeholders to future-proof technical designs for evolving analytics needs
Design and deploy AI-enabled features using Java and integrated AI frameworks
Stay current with Java ecosystem trends, AWS best practices and AI development techniques

Requirements

5+ years of hands-on experience in Java development (Java 17+ preferred)
Solid background in Spring Boot or Quarkus for enterprise-grade applications
Expertise in RESTful APIs and microservices architecture on HTTP standards
Practical experience with AWS services such as Lambda, EC2, S3, Step Functions, EKS, DocumentDB and Bedrock
Proficiency in relational and non-relational databases, including SQL
Familiarity wit

📌 Lead Java Developer (España)
🏢 Epam Systems
📍 España