---
title: "Founder @ IT Consultancy Florian Kessler · Florian Kessler"
url: https://vutuv.de/florian_kessler/work_experiences/founder-it-consultancy-florian-kessler
type: work_experience
schema_version: 3
generated_at: 2026-08-18T12:11:01Z
noindex: true
noai: true
---

# Founder @ IT Consultancy Florian Kessler · Florian Kessler

- Founder @ IT Consultancy Florian Kessler (1993-07 – 2004-09): I wrote my first ever invoice for customers of my parents' tax office helping them set up an electronic ledger (DATEV) on MS-DOS.  Besides school I grew the business to support clients with Windows in the frontend, Windows and Linux in the backend (AD/exchange; samba, sendmail/postfix, lpr/cups) and BSD (pf) on the perimiter.  Virtualization brought some sort of sanity to upgrade Windows in the backend (VMware, XEN, later kvm).  Automated and fully documented everything there was way before "infrastructure as code" was coined.  Hired first staff. Grew a team.