Java Developer

About the Project 

Our client is a European payments organization undergoing a major digital transformation focused on modernizing its core transaction‑processing platform. The team is building a modern microservices‑based environment designed to increase scalability, reliability, and performance across high‑volume payment operations.

Technology stack in use: Java 21 (Spring Boot 3), OpenShift / Kubernetes, Apache Kafka / Rabbit MQ for streaming and queuing, MongoDB, Oracle Database, multiple DevOps tools for development, automation and monitoring.

Work mode: hybrid, 3-4 per week from Cracow office

 Key Responsibilities:

·       Design, develop and support testing payment services features together with the team.

·       Resolve issues by troubleshooting and root cause analysis and support in production issue analysis when needed.

·       Ensure high quality via unit testing and code reviews.

·       Demo and document the results of work in demo sessions.

Required Experience & Skills:

·       At least 3 years on similar position

·       Technical knowledge in at least some of the technologies used is needed.

·       Java development skills are the most relevant.

·       Understanding of microservices architecture and distributed systems.

·       Familiarity with API design principles.

·       Fluent English

 Additional Valuable Skills:

·       Experience in designing and implementing high-throughput, low-latency systems capable of handling large data volumes

·       Groovy, Maven, Jenkins

·       Knowledge of the Card Processing domain

·       Documentation and use of Jira/Confluence

·       Excellent communication and coordination skills

We offer

• Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. 

• Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. 

• Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. 

• Spectacular events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), 

• Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. 

• Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, 

A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad