Senior JAVA Developer | Contract

We are seeking a Senior Java Developer to join a cross-border engineering team focused on building and evolving enterprise-grade backend systems within the banking domain. This role involves hands-on development of cloud-native solutions, leveraging Java 17+ / Java 21, Spring Boot 3+, and microservices architecture. You will contribute to designing scalable and secure RESTful APIs, working within distributed systems and AWS cloud environments, while influencing technical decisions and platform evolution. n Key Responsibilities: Design, develop, and maintain backend services using Java 17+ / Java 21 and Spring Boot 3+. Build and integrate RESTful APIs for scalable and secure services. Develop and maintain microservices architecture in cloud-native environments. Implement event-driven solutions using Apache Kafka and low-latency messaging patterns. Collaborate with teams to ensure high-quality code, clean code principles, and automated testing. Contribute to CI/CD pipelines and infrastructure using Terraform, ArgoCD, and EKS. Monitor and optimize applications using AWS services such as API Gateway and CloudWatch. Must-Have Requirements: Strong experience with Java 17+ / Java 21. Hands-on experience with Spring Boot 3+. Proven expertise in RESTful API design and integration. Experience with Apache Kafka and event-driven architectures. Solid understanding of cloud platforms, preferably AWS. Experience working with distributed systems. Familiarity with CI/CD practices and tools like Terraform, ArgoCD, and EKS. Strong commitment to clean code and automated testing. Fluency in spoken and written English. Nice to Have: Experience in banking, financial services, or regulated environments. Familiarity with Quarkus. Notes:Location: Baltic States (Lithuania very highly preferred)Start Date: ASAPDuration: Until 2026-10-30 n€40 - €50 an hour n Apply To This Job