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.

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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
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