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