- High-performance, scalable distributed systems
- Implementation of micro-service architectures
- Conception, archictecture, orchestration
- Electroning Invoicing (Factur-X/ZUGFeRD, XRechnung, UBL, CII)
- Programming in TypeScript/JavaScript, C/C++, Perl, Python, Java, ...
- Internationalization of software and documentation with standard technologies like gettext and DocBook
- Responsive web design und HTML/CSS coding
- Content management with qgoda, imperia CMS, and pirobase CMS