Mid/Senior Java Developer (Banking/Fintech)

We are looking for a Mid/Senior Java Developer to join a long-term fintech/banking project. The role involves designing and developing scalable backend solutions using Java 21 and Spring Boot, working within a microservices architecture, and ensuring high performance and reliability of backend systems. The ideal candidate brings hands-on experience with REST API development, cloud environments (AWS), and modern DevOps practices, and holds valid residency in Lithuania, Latvia, or Estonia (citizenship required; background check applies).

Key Responsibilities:

• Design and develop scalable, high-performance backend systems using Java 21 and Spring Boot
• Build and optimize REST APIs following best practices in software architecture
• Work within a microservices architecture, ensuring modularity and maintainability
• Manage builds and dependencies using Gradle
• Write and maintain automated tests using JUnit, Mockito, and AssertJ
• Ensure code quality through SonarQube analysis and code review processes
• Work with GitLab for version control and CI/CD pipeline management
• Containerize and deploy services using Docker on AWS
• Implement logging with Logback / SLF4J and monitor systems via Grafana
• Handle asynchronous event-driven communication using Kafka
• Work with PostgreSQL as the primary database and Redis for caching
• Apply strong security principles and best practices throughout the development lifecycle
• Collaborate closely with cross-functional teams in an agile environment

Must-Have Requirements:

• Proven professional experience in Java development with a strong technical background
• Proficiency in Java 21 and Spring Boot
• Experience with Gradle as a build and dependency management tool
• Hands-on experience with JUnit, Mockito, and AssertJ for testing
• Familiarity with SonarQube for code quality assurance
• Solid experience with GitLab and CI/CD pipelines
• Experience with Docker containerization
• Hands-on experience with AWS cloud services
• Knowledge of Logback and SLF4J for logging
• Experience with Grafana for system monitoring
• Working knowledge of Kafka for messaging and event streaming
• Proficiency with PostgreSQL and Redis
• Expertise in solution design and microservices architecture
• Strong understanding of security principles and best practices in software development
• Knowledge of DevOps practices and related tooling
• Strong problem-solving and analytical skills with a collaborative mindset
• Lithuanian, Latvian, or Estonian citizenship (residency requirement; BGC required)
• Fluency in English

Nice to Have: 

• Prior experience working on fintech projects