Senior Java Engineer - Fintech, Reactive APIs (Hybrid)

EPAM Systems; Warszawa; Hybrid; PLN 150,000 - 220,000; Full time

Benefits offered by this job

Health insurance

Stock Purchase Plan (15% discount)

Relocation opportunities

Hybrid/Remote options in Poland

Job summary

EPAM Systems in Warsaw seeks a Senior Java Software Engineer to join our Financial Services Practice. You will develop Java-based applications for major banks, implement REST APIs, and apply reactive programming to build responsive systems.

You will design and maintain unit tests, integrate MongoDB, and collaborate with cross-functional teams to deliver scalable software. The role includes client-site work 3 days/week with hybrid and remote options within Poland.

Qualifications

• 6+ years of experience in Java development, focusing on Java 8 & 9.
• Experience with NoSQL databases, ideally MongoDB.
• REST API implementation expertise, ideally with JAX-RS.
• Experience with Reactive Programming, ideally RxJava.
• English proficiency at B2 level or higher.
• Experience developing fintech applications or within financial institutions is a plus.
• Familiarity with microservice architectures.
• Experience in Agile Scrum.
• Experience working on globally distributed teams.

Responsibilities

• Develop robust Java-based applications and solutions for financial services clients.
• Implement REST APIs to support business requirements.
• Apply reactive programming principles to build responsive systems.
• Design and maintain unit tests to ensure code quality and reliability.
• Integrate NoSQL databases into the architecture.
• Collaborate with cross-functional teams to deliver high-quality software.
• Contribute to architectural decisions for scalable systems.

Skills

Java

REST API

Reactive programming

Unit testing

Agile Scrum

Microservices

Distributed teamwork

English (B2)

Tools

MongoDB

RxJava

JAX-RS

Job description

EPAM Systems in Warsaw seeks a Senior Java Software Engineer to join our Financial Services Practice. You will develop Java-based applications for major banks, implement REST APIs, and apply reactive programming to build responsive systems.

You will design and maintain unit tests, integrate MongoDB, and collaborate with cross-functional teams to deliver scalable software. The role includes client-site work 3 days/week with hybrid and remote options within Poland.