Senior Java Developer

EPAM Systems; Warszawa; Hybrid; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Hybrid by design

Remote in Poland

Opportunity to work abroad up to 60 ? 

Relocation opportunities

Health insurance

Multisport

Employee Stock Purchase Plan with 15%"

Job summary

EPAM's Financial Services Practice seeks a Senior Java Developer to join world-class engineers, designing and maintaining Java-based backend services and scalable RESTful APIs for high-impact financial platforms.

Based in Warsaw, you will collaborate with global teams to build reactive, data-intensive systems in a fast-paced environment, with hybrid work and three days on client site.

Qualifications

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

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

Skills

Java

Reactive programming

Unit testing

Problem solving

English communication

Tools

MongoDB

JAX-RS

RxJava

REST APIs

JUnit

Job description

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

We offer

• We gather like-minded people:
  • Top tech minds driving innovation in AI, cloud and digital platform modernization
  • Supportive team and agile, startup‑like culture
  • Hybrid by design mode and opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually
  • Business‑driven relocation opportunities
• We provide growth opportunities:
  • Career development programs
  • Thought leadership, mentoring, soft skills and well‑being programs
  • Certification (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes
• We cover it all:
  • Stable pay
  • Participation in the Employee Stock Purchase Plan with a 15% discount
  • Benefits package (health insurance, multisport, shopping vouchers)
  • Referral bonuses up to $2,000
  • Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
  • Corporate, social and well‑being events
• Please, note:
  • Benefits listed above are available to employees only
  • We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
  • We will reach out to selected candidates exclusively

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI‑Native enterprises, driving measurable value from innovation and digital investments.