HW/operation system :
IBM zOS, 370, 43xx, 93xx / DOS/VSE,  OS/MVS  ;  Siemens/ BS1000,BS2000  ;   HP/UX (UNIX)   Honeywell-Bull/GCOS ;  PC /   MSDOS ,WINDOWS       
 
Programing languages
ABAP/4, APL, ASSEMBLER (IBM Host) ,  BASIC, C,C++, COBOL , FORTRAN, FORTH,  NATURAL, PASCAL , PLIOPT , RPG,  usw
 
Data bases   
ADABAS, IDMS , IDS II., IMS , SQL ( DB2,ACCESS), Teradata, OMS (Object Management System)
 
DC
 CICS, IMS
 
Methods
            Projektmanagement PRINCE, Agile
 
Sonstiges
ISPF, JCL, VSAM, Windows, Telekommunikation (TCP/IP, NETBIOS), EDI, EDIFACT, MAESTRO II,  SAP R/3 (Module : AM, BC, CO, FI, MM)  BaaN/TRITON  PPS , AUTOMOTIVE, AJM  (automatic Job management)