About Six year experience with realtime billing system.
* several languages known from Java to Perl (passing through C/C++, Python)
* developer under linux - local, by remote connections or in emulated machine by virtual application - and windows too ;)
* linux sysadmin
* pragmatic methodologies: automated builds, tests and source versioning
* agile methodologies: Kanban and more
* problem foreseerer by monitoring software as Nagios or Zabbix