PL - Senior Java Developer

B2Bnetwork • IT Outsourcing & Dedicated Teams • Software Testing & QA • JavaScript • Java • TypeScript • SQL • C++ • 12 days ago
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Location
In office
Seniority
Senior · 5+ years exp

Confirmed on the employer's own hiring board on Sep 29, 2026. First seen by Alion on Sep 18, 2026. B2Bnetwork scores B on the Alion truth index.

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B2Bnetwork

B2Bnetwork (B2B.net S.A.) is a Warsaw-based IT outsourcing and software testing company that supplies IT engineers and whole teams to clients in data and analytics, cloud, cybersecurity, digital workplace and application development and maintenance. It operates from the Kopernik Office Buildings in Warsaw, runs QA, cloud, security and academy networks, organises ISTQB examinations, and places many specialists on projects for large banks, most visibly Nordea in Warsaw and Gdansk. Its postings cover Java and Python developers, test automation engineers, IT analysts, data engineers, solution architects, Scrum masters and project managers, largely on B2B contracts.
b2bnetwork.ai • HQ: Warsaw, Poland • IT Outsourcing & Dedicated Teams • Software Testing & QA • IT Staffing & Staff Augmentation • Est. 2019

We are looking for a skilled and experienced Senior Java Developer to join one of our teams in Cards Technology. As the Java Developer, you will play a critical role in the design, development and maintenance of Java applications that support our business services.

At our company, we recognize that the world is evolving rapidly, and we aim to stay ahead of the curve. We are dedicated to providing innovative solutions for our customers. Our agile environment fosters experimentation and growth, and we value your unique ideas and background. Join us, and you'll be part of a supportive community with the opportunity to make a meaningful contribution.

At the Cards Domain, we are deeply committed to providing the financial solutions of tomorrow to our customers.

About this opportunity

Examples of what you could be doing:

  • Designing, developing, and maintaining Java applications
  • Collaborating within agile team and ART
  • Working with various internal and external stakeholders
  • Troubleshooting and resolving issues in existing applications
  • Optimizing application performance and ensuring code quality
  • Creating technical documentation for developed functionalities

Your technical skills and experience:

  • Minimum 5 years of Java Software Development experience.
  • Practical knowledge of microservices architecture, clean code and continuous integration.
  • Knowledge and hands on experience of Java (8+), Spring Framework, Spring Boot, SQL
  • Good understanding of REST API design
  • Familiarize with CI/CD tools like Bitbucket, Jenkins
  • Agile/Scrum/SAFe methodology experience

Nice-to-have knowledge and experience

  • Experience in C++ development
  • Hands-on experience with AI-assisted development tools (e.g., GitHub Copilot) is a significant advantage.
  • Familiarity with test automation concepts, tools, and best practices
  • Kafka
  • Front-end development experience with at least one of the following: JavaScript, Angular or React
  • Spring WebFlux
  • Docker, Kubernetes
  • Experience in the financial industry
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