I’m shutting down Gefyra.co indefinitely soon.

TL;DR

The site has strayed from its original purpose, and I’m looking for ways to focus on my personal growth.
- If you want to read more on why, here’s a write-up on it: https://newsletter.levelupwithdata.com/p/the-need-to-reinvent-myself-as-an-data-engineering-manager-2025
The site may resurrect, but it will never be as it is today.

What It Means To You

I’m splitting my content into three places:
- Medium: https://medium.com/@jonathan.moo
  - All miscellaneous articles are posted here until I have a reason to include them elsewhere.
- Level Up With Data: https://levelupwithdata.com/
  - The focus is on all data-related topics:
    - Data Science / Machine Learning / AI
    - Career advice
- Web Musing: https://www.webmusing.com
  - Personal musings and blog
I will not be replacing any removed content if they are not on my other platforms:
- I will remove the student notes that I provided when I taught at the University of Denver (DU), Arizona State University (ASU), and the University of Miami (UM).
- I have plans to recreate some of the content, but not all of it.
- For my ex-students, feel free to connect with me on LinkedIn if you need help with the content.