Here are some profiles, not really updated on a constant basis, with various research and technological communities.
Netbeans
Environment for Java development.
https://netbeans.org/people/335178-Dirk
Refind
Platform for sharing information.
https://refind.com/dirk-steffes-tun
Github.io
Software development
https://dirkstef.github.io/hrwalker/
Welcome.ai
Projects related to artificial intelligence.
https://www.welcome.ai/projects/sorec-pro
Remote
Project network
https://remote.com/profile/dirk-steffes-tun-0ae7fe63-946c-436b-9ee1-9d1472a53a3f
Clippings
Portfolio website
https://www.clippings.me/users/dirkste
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