First of all, thank you so much for sharing knowledge! :)

I find your lessons very interesting and valuable. It really helped me streamline my design knowledge and get a lot of new one.

For this lesson I created a project for individual entrepreneur - full-stack developer/programmer.

These are some logo drafts. I tried to use the idea of Z letter and chip or create some digital association. 

This one had been chosen. The idea of logo consists of a Z letter and a chip-shaped or a button-shaped rectangle. I've also chosen dark-blue color and dark blue/purple gradient as I wanted to make some digital association in solid style but with some little bright accent.

The presentation of the idea. I've done some correction work in Photoshop - Z key button and chip (cutting and color correction, by Graphic Design Masterclass). 

The business card layout and mocup

 

Branding description

Final branding mocup

Thank you for watching my project!