Dusan Sichrovsky

A sandbox project where I tested the following new technologies:
• A simple web UI and CRUD operations with security to prepare for a queuing system's 2nd generation.
• A "pluggable" UI framework and an ORM framework since the app uses DTOs and UI POJOs called forms. This version contains JavaServer Faces and PrimeFaces, but I was also able to plug GWT or CXF web services.

Currently developing a brand-new online platform for booking on-demand services. I am an active part of technical and architectural decision-making as well as working on the Agile development.

One of the new challenges is to improve my current skill level in Angular2. The architecture fully conforms to top-notch technologies and standards: has AJAX, a responsive front-end, and REST APIs by use of microservices architecture.

Utilized Technologies: Angular2, Gulp, NPM, Java/J2EE, Spring (Boot, Security, Data), Jackson, JSON, Maven 3, JUnit, DBUnit, Hibernate, Tomcat, PostGres, H2, Git, and Visual Paradigm.

“Samanta” ERP is a product that replaced SAP in recycling and paper factories in 2013/14 . It consists of 15 subsystems such as: Purchasing, Currency Forward Sales, Raw Material/Spare Parts Warehouses, Production and Sales Forecasting, Buyer Management, Interfacing with Bookkeeping and Production Systems, and more.

It was initially forked and started by me while it was built with a development team of 4; we completely refactored the old ERP “Silkroad 5”.

Refactoring activities included:
- Technological upgrade of Java 5 to Java 6.
- Migrating from Maven 2 to Maven 3.
- Transferring JDBC and custom frameworks to 100% Hibernate.
- Business logic refactoring and layer cleanup to comply with industry and company standards.

I have been active as development lead and later on as project manager but never gave up the opportunity to develop Java code as well – mostly technological proof-of-concept, complicated calculations, business logic and global build configurations (Maven 3).

Utilized Technologies: MS Project, Java, Java Web Start, IntelliJ, Swing, JIDE Components, Maven 2, Maven 3, Ant, SVN, Axis2, JDBC, Hibernate Spring, Java Reflection API, XDoclet, Tomcat, DB2/AS400, and Visual Paradigm.

An old ERP product for paper traders written in Java. I participated in the everyday development bug fixing and new feature implementation. This ERP had 3 main instances: Vienna, Bangkok, and Hong Kong; serving 1,000+ users and covering the whole business process of the paper trader group.

Utilized Technologies: Java, Java Web Start, IntelliJ, Swing, JIDE Components, Maven 2, Maven 3, Ant, SVN, Axis2, JDBC, Hibernate Spring, Java Reflection API, XDoclet, Tomcat, DB2/AS400, and Visual Paradigm.

I participated in many activities regarding this project’s development.

I was personally responsible for development of special features such as “dynamic localization and dynamic skinnability” of the portal, incorporation/configuration of Orchestra’s conversation scope, generic server-side pagination DataModel for JSF tables. I was also involved in the common implementation tasks e.g. UI implementation (Facelets, RichFaces, and Tomahawk), Hibernate mappings customization, JUnit tests writing, and business logic implementation.

Overall, I have greatly improved my knowledge of Hibernate and JSF 2.0 technology.

Utilized Technologies: Eclipse, Maven, MyFaces JSF 2.0, Facelets, Tomahawk, Orchestra, RichFaces, Spring (Core, AOP, Security), Quartz Scheduler, Axis2, Hibernate, JUnit, DBUnit, Dozer, PostGres, Tomcat 7, SVN, and Jira.

Message Broker provides a proxy between the front-end portal and the airline systems. It’s purpose is to transform the SOAP-protocol into XML-RPC and vice versa. Additionally, I created a simple testing server that mocks the airline systems. In July 2011, it went to production.

Redesigned an application model of a preexisting application in order to increase performance.

The aim of the application is to fill a prepared questionnaire for responsible users in order to produce a security concept for any application used as internal system in the Commerzbank. A security concept is a document which incorporates answers from filled questionnaires into a Word document.

This is one of the oldest projects in Commerzbank written in J2EE: Struts+Common Controls, Hibernate. We needed to change the application model, remove stored procedures on the Sybase-side (Transact-SQL), and integrate Spring into it. Due to this, the SQSC became more transparent for developers and also the performance in critical operations was increased.

Utilized Technologies: Eclipse, Oracle SQL Developer, Aqua Data Studio, Sybase (T-SQL), Struts,Tiles, Common-Controls, Spring, Hibernate, IBM ClearCase, Tomcat, XHTML, JavaScript, and CSS.

This is a web application used for the management of assets in Commerzbank such as asset registration, reservation of notebooks, projectors by employees, and the placement of all the technical accessories in offices.

The system is written in J2EE, it uses Struts+Common Controls, Spring (AOP for logging and transaction management), Hibernate, Oracle, Maven for project libraries management, Continuum for everyday integration – these are the standard tools and frameworks for Commerzbank. I also wrote tests in JUnit for the business service layer and Selenium tests for the front-end.

Utilized Technologies: Eclipse, Oracle SQL Developer, Aqua Data Studio, IBM Clear Case, Oracle DB, Hibernate, Spring, Struts, Tiles, Common Controls, Junit, Selenium, Tomcat, XHTML, JavaScript, and CSS.

The aim of my thesis was to design and implement an information system that supports electronic archiving and administration of high-school students’ research projects.

The system allows electronic registration of the students and their projects for the contests, which are held by regional and state authorities. The system is written in PHP strictly object-oriented and the architecture is MVC. I managed to implement my own simple object-relational mapping layer and automatic validations of forms and PDF generation (FPDF). Every layer of the system has its own specific function (DAO, Service, Controller, and View).

Utilized Technologies: Eclipse, SVN, PHP, Smarty templates, FPDF, Apache HTTP Server, MySQL, XHTML, JavaScript, and CSS.

Queuing system ReSys has client-server architecture.

There are 2 types of clients:
1. A hall client serves requests from the patients via touch-screens and prints paper tickets with numbers.
2. The doctor’s client marks the patients’ tickets as served and can set time and patient count restrictions.

The system is written in Java and MySQL is used to store the data on the server side (JDBC). Every request/response which is sent from/to server/client is in the XML format and is sent through the Socket channel. XML messages are parsed by SAX parser on each side. The GUI uses Swing. For each client which logs in to the server, a separate thread is created to serve requests and to generate responses (ex. a ticket request for the doctor, restriction set, and a denial ticket due to restriction, and more).

Only the server is connected to the database. The hall client is configurable by configuration XML file (height, width of printed ticket, fonts, GUI colors, etc.).

Utilized Technologies: Eclipse, Oracle SQL Developer, Java, SVN, XML, JDBC, Swing, SAX, Java Print Service (javax.print).

This is a school portal for high school teachers and students in Prague. At first, I was participating as a very junior developer. Initially I was fixing bugs especially in the front-end and action layers. Later I worked as a business analyst working on UML modeling, meetings, and on the customer relationship.

Utilized Technologies: NetBeans, CVS, Struts, JSP, Tiles, Hibernate, Oracle Tomcat, XHTML, JavaScript, and CSS.

This is a graphical program for barcode printing on plastic cards that printed more than 20,000 cards in production.

Utilized Technologies: Java, Swing, and the Barbecue Framework.