Java Developer

Experienced Java/Spring Developer with over 10 years of programming experience in Java and Hibernate. Skilled in Spring Boot, JSP, JSF, Primefaces, Angular, and various databases. Proficient in CI/CD tools, cloud platforms, and architecture design. Strong project management and team leading abilities. Available for freelance projects and teaching opportunities.

• Worked on technical refresh of Dashboard and Main UI applications, updating them to Java 17 version and migrating to SpringBoot. Redesigned and rewrote applications from old Java 8 and Primefaces 3 to Primefaces 13 and SpringBoot 3.
• Redesigned Formular Gateway system for electronic forms processing and integrated with other systems using Java and SpringBoot. Implemented frontend using JSP.
• Taught evening course on Java and SpringBoot programming, covering Java algorithms, OOP, IO, Spring, SQL, Hibernate, etc.
• Implemented DataModel Services SpringBoot application for editing metadata validating accounting bookings. Developed backend using SpringBoot 5 and frontend using Angular framework.
• Designed and implemented data warehouse for Badminton World Federation using SpringBoot 5 Framework with Postgres database. Provided REST API for data access, secured with KeyCloak authentication server.
• Designed and implemented peer-to-peer lending portal using PHP 7 + Nette Framework with Postgres SQL and CouchDB NoSQL databases. Integrated system to bank interface, Email&SMS gateways, and deployed to Amazon EC2 cloud server.
• Implemented intranet web portal for Slovak Railways using JSF + Primefaces technology. Reimplemented loan approval system for Credit Scoring using Whitestein BPM framework.
• Developed Android applications as a freelancer, including DeliverUp for trucks navigation, Attendance for scanning QR cards, EMERE Payments for mobile payments, and own Android games like Woodebox Puzzle and Transact.