Senior Java Developer (Fintech)

TL;DR

Senior Java Developer (Java): Developing and optimizing billing systems for processing fees, exchanges, and payments with an accent on scalable on-premise solutions and technical architecture. Focus on managing the full feature development cycle, designing ERD/UML diagrams, and ensuring high-performance payment processing.

Location: Onsite in Warsaw, PL

Company

A global fintech company providing unified payment infrastructure and financial services for merchants and consumers worldwide.

What you will do

• Collaborate with Product Owners to clarify requirements and expectations.
• Design scalable on-premise solutions and gather feedback from Architecture, Security, and BI teams.
• Create detailed technical documentation, including ERD diagrams, UMLs, and process flows in Confluence.
• Develop and optimize billing systems for fees, exchanges, payments, and invoices.
• Partner with QA engineers to ensure high-quality software delivery.
• Troubleshoot production incidents and optimize system performance.

Requirements

• At least 5 years of professional experience with Java.
• Strong background in enterprise software development.
• Proven ability to independently manage the feature development cycle from inception to deployment.
• Experience working within Agile/SCRUM teams.
• English: Very good proficiency required.
• Location: Must be based in Warsaw, PL.

Culture & Benefits

• Opportunity to work on a global fintech platform.
• Engagement in the full software development life cycle.
• Collaborative environment with cross-functional teams including Architecture, Security, and BI.