Cezary is available for hire

Cezary Kujawa

Verified Expert in Engineering

EJB 3 Developer

Location

Lipinki Łużyckie, Poland

Toptal Member Since

October 29, 2015

Cezary is a quick-learning Java EE developer with over 10 years of experience. He has proven skills as a lead developer and architect. With great communication skills and a flair for finding the right solution, he's the perfect addition to your team.

Java Hibernate Spring MVC Spring PostgreSQL JUnit SQL Jira Confluence JavaFX Script JavaFX Spring Boot SOAP Apache Tomcat Linux

Portfolio

Dinghy Software

JavaFX, REST, JPA, JMS, EJB3, Spring, Java EE

Adams Software House

Java Web Start, Swing, JasperReports, Apache Struts, Hibernate, Spring, Java EE

Experience

Java - 12 years Hibernate - 11 years Spring - 9 years JPA - 7 years EJB 3 - 7 years

Availability

Part-time

Preferred Environment

Git, Bower, Apache Maven, WebStorm, Eclipse

The most amazing...

...thing I've implemented is a compiler and virtual machine to execute programs coded in my language.

Work Experience

Senior Java Developer

2006 - 2015

Dinghy Software

Designed and implemented the back-end for handling a loyalty program.
Planned and implemented a real-time location-based system.
Designed and implemented a large (over 500 tables in DB) ERP system as a web application.
Implemented a flexible portal engine that can be deployed by mobile operators.
Created a BI solution for analyzing real-time data (ETL and warehouse prototype).

Technologies: JavaFX, REST, JPA, JMS, EJB3, Spring, Java EE

Java Developer

2003 - 2006

Adams Software House

Migrated the persistence layer of a legacy system from pure JDBC to Hibernate ORM.
Implemented custom JSP tags for table data presentation.
Developed a custom action-based web application framework.
Built a simple work hour recording web application.
Created a chart presentation module for a web reporting system.

Technologies: Java Web Start, Swing, JasperReports, Apache Struts, Hibernate, Spring, Java EE

Experience

Toyota More

http://www.toyotamore.pl/

Design and implementation of a fully fledged Java EE 5 application for handling a points-based loyalty program launched by the Polish branch of Toyota (over 100k participants and 80 partner companies). With GUI back-office client and web service dealership integration.

Rasch ERP System

Design and implementation of a large (over 500 tables in DB) ERP system as web application for a German production company in order to replace the legacy system.

Dispatch System for Fleet Management

Design and implementation of a real-time location-based system with wide range of applications involving dispatching of mobile resources (possible deployments in areas such as medical emergency services, taxi company, delivery company, and public transportation company).

Skills

Languages

Java, JavaFX Script, SQL, JavaScript

Frameworks

Spring, Hibernate, Spring MVC, JPA, Spring Boot, Jersey, JUnit, Apache Struts, Swing, Java Web Start, Spring Security, OSGi, Apache Camel, Apache CXF, Swagger, Netty, Mockito, AngularJS

Storage

Spring Data, PostgreSQL, IBM Db2, MySQL

Other

EJB 3, EclipseLink, EJB3, RMI, SOAP

Tools

Jira, Confluence, WebStorm, Apache Maven, Bower, Git, Apache Tomcat, Jetty, Apache Solr, WildFly

Platforms

JavaFX, Eclipse, Java EE, Linux

Libraries/APIs

JMS, JasperReports, Leaflet, TopLink

Paradigms

Test-driven Development (TDD), REST, Scrum

Education

1999 - 2004

Master of Science in Engineering Degree in Computer Science and Information Technology

West Pomeranian University of Technology - Szczecin, Poland

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