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Senior Java Developer – Banking Microservices Expert
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Offer summary

(Summary generated by AI based on the full job description)

The project involves banking systems focused on scalable, event-driven microservices. Technologies include Java 21/25, Spring Boot 4.0, MongoDB and Apache Kafka. Responsibilities cover developing and maintaining core banking services, designing event-driven architectures, collaborating within a microservices ecosystem, working with legacy code, and participating in CI/CD pipelines (OpenShift, Jenkins, Maven). Applied patterns are DDD, CQRS, and hexagonal architecture. Polish communication and EU work authorization are required.

you can start ASAP

Senior Java Developer – Banking Microservices Expert

Company: ITDS Polska Sp. z o.o.

from: 22 May 2026
to: 21 June 2026
18 900 - 23 100 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

JaCoCo
Java
Jenkins
Kafka
Maven
MongoDB
OpenShift
SonarQube
Spring Boot
Schema Registry

Our requirements

  • 7+ years of experience in Java development, ideally within banking or financial services.
  • Deep knowledge of Java (21/25), Spring Boot, and MongoDB.
  • Strong experience with Kafka and event-driven architecture.
  • Proficiency with REST APIs, Git, Maven, and CI/CD tools.
  • Ability to work with legacy systems and develop scalable solutions.
  • Solid understanding of microservices architecture and domain modeling.
  • Communicative Polish.
  • Only candidates with an existing legal right to work in the European Union will be considered for this role.

Optional

  • Certifications or experience in OpenShift, Jenkins, or related cloud technologies.

Your responsibilities

  • Develop and maintain core banking services using Java 21/25, Spring Boot 4.0, and MongoDB.
  • Design and implement event-driven architectures utilizing Apache Kafka and Schema Registry.
  • Collaborate on microservices ecosystem, ensuring high quality and scalability.
  • Work with legacy code and contribute to system evolution within a complex environment.
  • Ensure code quality through tools like JaCoCo and SonarQube, following best practices.
  • Participate in CI/CD pipelines using OpenShift, Jenkins, and Maven.
  • Apply Domain-Driven Design (DDD), CQRS, and Hexagonal architecture principles.
  • Work independently within a mono-repo approach, managing multiple repositories and shared libraries.

About the project

Empower scalable financial systems — drive innovation in banking technology!
Warsaw-based opportunity with remote work model (up to 5 days remote per week).
As a Senior Java Developer, you will be working for our client, a leader in the banking industry, dedicated to building and maintaining core domain systems that serve internal clients. Join us in creating robust, event-driven microservices that shape the future of banking infrastructure, fostering seamless digital experiences and technological excellence.

This is how we organize our work

This is how we work

at the client's siteagilescrum

This is how we work on a project

  • DDD
  • Continuous Deployment
  • Continuous Integration

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.
We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

📌 You can report violations in accordance with ITDS’s Whistleblower Procedure available here: https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
Company

What we offer

  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

Benefits

  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

Recruitment stages

  • 1.
    first online interview
  • 2.
    second online interview

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.
We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.
We see where banks, insurers, payment companies, or fintech can go and how they can get there.
That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.
ITDS in Poland - Pure player in new Technologies & Financial Industry
+300 IT implementation professionals
+20 clients in the Banking, Insurance, Payment & Fintech Industry
ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

This is how we work

Senior Java Developer – Banking Microservices Expert
18.9k–23.1k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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