Software Engineering
Extensive knowledge of modern Web Development with Responsive Design, REST/JSON API’s and Javascript on both front and back end. Deep knowledge of ReactJS, JavaScript, TypeScript, Elixir/Phoenix, XSLT and several web frameworks (jQuery, Rails, NodeJS)
Ruby/Rails Web Development since 2007 in several projects involving membership, conference and document management, e-Commerce integration with both React and Rails frontends in HTML and HAML
Database Development with PostgreSQL, MySQL, MongoDB, Python and Redis
GUI/UX Design including experience with Responsive Design, Touch and Pen Input, and designing and implementing and integrating web frontends with low-level hardware systems
Devops and deployment in cloud based systems such as AWS, DigitalOcean, Scaleway, Hetzner Cloud as well as On-Premise and Bare Metal Cloud-based Linux Servers.
Some experience with integrating document databases with AI Large Language Models, both with local models and ChatGPT / Mistral
Other languages: Javascript/TypeScript, NodeJS, Elixir/Erlang, ReasonML, Clojure/Script, PureScript, C/C++, Python, Assembler and Basic
System and Network Administration
Experience with Linux since 1993 (Linux 0.97), MacOS/X since 2005 (OSX 4.0) and Windows since 1990
Installation, management and integration of heterogenous Windows/Linux networks as well as virtualisation with Proxmox, Kubernetes and Docker
Very deep technical knowledge of Internet protocols including TCP/IP, SMTP and HTTP as well as infrastructure procols (routing, firewalls). Experience in implementing several custom email servers for special workflow requirements.
Experience with modern Devops methodologies (Ansible, Puppet, Docker, CircleCI).
UX / GUI / Media Production
Extensive experience in GUI and Interaction design for Desktop, Web and Mobile Devices. Several projects developed as full stack developer for both responsive mobile and desktop applications.
Digital document production (Print, PDF, EPub/Mobi) Indesign, Illustrator, Photoshop, XML/XSL. AutomatisatiMore...