Senior Java Developer

EPAM's Financial Services Practice is looking for an exceptionally talented Senior Java Developer to join our team of world-class engineers. You will work on cutting-edge technology solutions for one of the world's largest and most prestigious global investment banks — an institution at the forefront of financial innovation, operating across investment banking, securities, asset management, and consumer banking worldwide.

This is an opportunity to build high-performance, data-intensive systems within a fast-paced financial environment, collaborating with top-tier engineering talent on platforms that operate at global scale.

This role requires availability to work from the client's office in Warsaw 3 times a week.

Responsibilities

• Design, develop, and maintain robust Java-based backend services and applications
• Build and enhance scalable RESTful APIs serving critical business functions
• Implement reactive, event-driven solutions for high-throughput data processing
• Work with NoSQL databases to manage and query large-scale datasets
• Develop comprehensive unit and integration tests to ensure code quality and reliability
• Collaborate with globally distributed, cross-functional teams to deliver end-to-end solutions
• Participate in architectural discussions and contribute to system design for scalability and performance
• Operate within an Agile Scrum framework, delivering iteratively with continuous feedback

Requirements

• 6+ years of professional software development experience
• Strong Java development experience — with a focus on Java 8 & 9
• Experience with NoSQL databases — ideally MongoDB
• Experience implementing REST APIs — ideally with JAX-RS
• Experience with Reactive Programming — ideally with RxJava
• Solid experience implementing unit tests
• Strong analytical and problem-solving skills
• Good communication skills in English for collaboration within an international team

Nice to have

• Experience developing applications in fintech or established financial institutions
• Experience with microservice architectures
• Experience developing systems that can scale to large amounts of data
• Experience working in Agile Scrum
• Experience working on a globally distributed team