Currently I'm providing network support to SAIC in Athens Greece. I am tuning the existing routers and switches and will be configuring the replacements. Additional desktop support is provided as necessary. 
 
Previously I built the snmp and service monitoring system at NASA Headquarters for SAIC. 
 
I built the network back end for the new e-mail system at NASA Headquarters which consisted of cisco stackable switches. 
 
Prior to that, I administered the Unix infrastructure including e-mail, web servers, database servers and other miscelaneous servers providing infrastructure services.