Description

With over 15 years of Java development experience, I specialize in backend architecture, system integration, and building robust, maintainable enterprise applications. I’ve worked across sectors—from fintech to SaaS—and currently lead my own company, Drasyl, where we develop a hierarchical task and project management system while also delivering integration-focused consultancy for clients.

My daily toolkit includes Java, Spring Boot, gRPC, JPA/Blaze Persistence, Liquibase, Testcontainers, PlantUML, Keycloak, and JHipster. I have a strong testing culture (JUnit, Mockito, TDD) and CI/CD know-how (Maven, Jenkins, Docker). I regularly work on performance optimization, refactoring legacy systems, and modularizing large codebases.

If you're looking for someone to cut through complexity, and deliver quality code, I’m available for freelance work or collaborations.

Industry field of expertise

Languages

Hungarian
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

Drasyl Ltd.
Java Developer, Owner, Managing Director
January 2021 - Today (5 years and 5 months)
Driven by our own idea, we began developing a hierarchical project/task management system. In addition, we participate in external projects, currently focusing primarily on system integrations. Most of my time is spent on development work (Spring, Antlr, Maven, PlantUML, OpenAPI, Blaze Persistence, gRPC, Liquibase, Testcontainers, JHipster, Keycloak – all part of my daily toolkit). To a lesser extent, I also handle operations (Hetzner, Docker), and as managing director, I take care of company-related tasks, administration, and communication with both our subcontractors and clients subscribed to our services.
Docker Keycloak Liquibase Maven Spring boot
Magnet Bank Zrt.
Java Developer
January 2014 - January 2020 (6 years)
I've participated in the development and maintenance of the customer interface, operator interface, and other internal backend systems of the NetBank service. My job involved developing and introducing new services/features, identifying performance issues, and I've actively participated in the introduction of the instant payment system. Worked both independently and as a member of a Scrum team. Keywords: Java 8, EJB, JSF, PrimeFaces, JPA, JUnit, Mockito, SQL, JMS, PostgreSQL, JasperReports, GIT, Maven, Jenkins, Glassfish, Wildfly, Docker, Linux
JavaServer Faces Maven GlassFish JasperReports Jenkins
Baxter Technologies Ltd.
Java Developer
January 2011 - January 2014 (3 years)
Development and testing of the company's forex trading products. Written communication in English with corporate clients, Pair Programming in English with Ukrainian colleagues. In the first year, I've contributed a significant improvement to automated tests via the introduction of Mockito and PowerMock (team training included). Later, I participated in the modularization and refactoring of the company's main product and took part in redesigns wherever it was needed. Keywords: Java 6, TDD, JUnit, DBUnit, Mockito, PowerMock, JBehave, JPA, SQL, JDBC, Hibernate, JMS, Oracle, MSSQL, SVN, GIT, JIRA, Redmine, Maven, Jenkins, Sonar
Mockito TDD Maven SQL Java