Development and maintainace of a telephone system. Set up and lead a team for the development
of a webshop in Ruby on Rails from ground up. Connecting the webshop to the telephone system,
create a billing system and connect to payment providers. Build a solution for slide presentations
on our web site by converting DOC, PDF, XLS, PPT files and distribute them to many web clients. Setup a
Jitsi conference system and build a webshop for it. Extent the Jitsi mobile App. The used technologies
where Ruby on Rails, Capistrano, ISDN, SIP, SMPP, Libreoffice modules, .net, Golang, Python, Nagios, MySQL/MariaDB,
Docker, Linux, Nginx, NodeJS, C/C++, PostgreSQL, PM2, VirtualBox, OpenVPN, SIP, Asterisk