i'm a software coder for several years working on different languages and operating systems. 
I performed several coding tasks on all these programming languages on the following systems:

C-128D  : Basic 2.0 - 7.0 | Assembler | CP/M 3.0
Windows : DOS 5.0 - 6.22 - 7.10 | Visual Basic 4.0 - 5.0 - 6.0 | MySQL
WEB: HTML | CSS | Javascript
ARM v7  : Bash | MySQL | Ansi-C


Some memory-programmable controllers (PLC's) are also part of my daily work:

Siemens S5 - S7 | AEG A-120 - A-130 - A-500 | Converteam Logidyn D2 | Pilz PSS-3000
Siemens Logo! V3 - V4 - V5 - V6 - V7 - V8
Klöckner Moeller easy 412 - 512 - 712 - 812