I...
1. ...know Windows System Services and have created stable & well architectured multithreaded servers in C# before,
2. ...know Serial Programming at high and low level and have done advanced RS232 communication (for example: I've implemented bit banging transfers on very basic Z80 system),
3. ...know Web Services and WCF.
4. ...have implemented various logs before including hierarchical and all inclusive audit trail,
5. ...understand parsing techniques (grammars, finite state machines, lexers, parsers, etc.) for processing text streams,
6. ...produce clean and optimal code, good architectural designs and documentation.