Experience

My experience is relatively broad. It aligns to the need of christian organizations with 2-50 PC clients in these fields of activity:

deaconess motherhouses
missions
theological education
schools
retreat centers
bookstores/publishing house
nursing homes
ambulant healthcare
dentist

for these functions:

accounting
controlling
pension and health insurance
donation management
human resources
secretariat
address management, mailing publications
order processing

Planning, Setup and Administration of Networks, Servers and Client PCs

Central efficient administration of about 50 servers (mostly Debian Linux, occasionally Windows) in about 25 locations totalling about 220 client PCs (mostly Windows, occasionally Mac and Linux):

file and print services
e-mail
internal web (static pages, eGroupware, Dokuwiki, WordPress)
remote networking by VPN (preferred tool: OpenVPN)
support/helpdesk, also as a team, using then ticket system RT
fault isolation, including data recovery, on servers and client PCs
virtualisation of servers (preferred tool: KVM)

Security

encryption (mail, web incl. SSL certificates, hard disk, files)
VPN
firewall
antivirus (incl. central management for more than 500 client PCs)
general strategic planning, incl. non-technical aspects

Setup and Operation of Application Programs

Mesonic WinLine accounting and controlling
Optigem address and donation management
Forum and Vivendi nursing home administration
Medifox and Vivendi for ambulant healthcare
and many others

Custom Programming

Currently using the programming languages Swift, Ruby, PHP, Kixtart, AutoItScript, Access VBA, Shell. Previous experience in many others.

Access applications (DGD database, pension accounting, payments to supplementary pension fund)
web application (meal plan, group calendar, job board)
data conversion, e.g. for interfaces from and to accounting
automation of system administration, e.g. backup

Telecommunication

market research (German market)
plan optimization
dealing with provides (placing and tracking orders, switching providers, trouble cases)
configuration of equipment

for

telephone (PBXes with 2-100 extensions)
mobile phones
Internet access
Internet presence

Building and Maintaining Web Presence

mostly in German language, in cooperation with a professional designer (mostly www.designbuero-oetjen.de)

without external designer:

supervision-homberger.de
marion-stut.de
stut.de (ProcessWire with standard theme)

General

structuring and solving of problems; I love to learn about new areas
find ideas, including unconventional ones, for your situation, once the basic whys and hows are known..
listening (I used to do telephone counseling)
vocational training for "IT specialists in system integration" (German name: "Fachinformatiker, Richtung Systemintegration")