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Sprachen
- Java (Fullstack, Web- & Standalone-Anwendungen, mobile Anwendungen mit Android & J9)
- SQL, PL/SQL (Oracle), PL/pgSQL (PostgreSQL), TSQL (MS SQL Server)
- R / Python
- C/C++ und C#
- HTML(5), CSS, JavaScript
- XSLT / FO
Frameworks
- Hibernate / JPA
- J2EE
- Spring
- Node.js / Socket.io
- ADT / Android
- Apache FOP, POI, Axis
- iText
- OpenStreetMap / Mapnik / PostGIS / OpenLayers
Datenbanken
- PostgreSQL / TSearch2 / PostGIS
- MS SQL Server / R-Services
- IBM DB2
- Adabas/Natural
- Oracle
- MySQL
GUI
- Enterprise Client – CaptainCasa
- Swing, JavaFX, Java2D, Java3D
- Eclipse SWT, RAP, RCP
- OpenGL
- Qt
- R Shiny
Data Warehouse
- Pentaho Mondrian
- JFreeChart
- BIRT
- JasperReports
- ReportServer
Komponenten & Kommunikation
- SOA / SOAP / JSON / WebSockets
- EJB
- DCOM
- JMS
- TCP/IP
Anwendungsserver
- Apache/Tomcat
- Wildfly
- JBoss
- WebSphere
Mobile & sonstige Technologien
- Java embedded für ARM, J9
- Android
- RFID (Deister Electronic, Intermec)
- WAGO Steuerung / Modbus (jamod)
- Machine Learning, R, Python, Keras
- Docker