Linux and open source expert since 1994, senior journalist, IT manager and trainer, management consultant and coach. Owner and consultant at Feilner IT (founded in January 2000). Loves professional research and investigation, loves to write, explain, organize, structure, make complex things understandable – in words, images and presentations.
Expert for human factor in IT (OSI Layers 8 to 10), digital sovereignty & sustainability.
User of modern documentation, project management, open source and common sense.
Author of three books (Security/OpenVPN, Mail/Groupware) and hundreds of articles in tech magazines and beyond.
Former deputy editor-in-chief for the German “Linux-Magazin”, former deputy editor-in-chief at Heise iX, the leading German language magazine for IT professionals, 2014-2019 Team Lead Documentation at SUSE, responsible for budget, hiring and leading a global team of 16 documentation experts.
Currently editor for technology and internet politics at Heinlein Support.