Personal Background:
I'm a former marine, former priest, former game designer, husband, and father of 3.
I work as an IT Engineering Department Leader from 8-4 every day, some days much more.

Video Game Experience:
I am an avid gamer and have played many notable titles:
Doom, Everquest, Asheron's Call 1 & 2, Eve Online, Neocron, Warcraft, Total Annihilation, Star Citizen, Minecraft and it's many modpacks, Project Gorgon, Skyrim, Arcage, Camelot, Dark Age of Camelot, Starcraft, Shadowbane, Scum, Arma 2 and 3 (Epoch), Civilization, All the Final Fantasy's, Phantasy Stars, Dragon Warrior Series, RUST, Grimrock and Wizardries to give you an idea.

I have developed but never published various games from simple to extremely complex using Unreal Engine and C++. Examples are a Hex Map Generator, VR MMORPG, and a platform game for my kids based on Mario and Myst.

Dungeon Master Experience:
I have also been a Dungeon Master for about 35 years.

I have DM'd from 1st edition all the way to 5th edition,
including essentials at game stores and pathfinder.

I've ran campaigns in a break area at work,
under a tree, in a living room, and in game stores.

I've even ran campaigns as a collaboration with multiple DM's in one scenario with multiple groups.

My point being, my experience is extensive, but I've never memorized every rule, and am far from an exceptional DM (cough) Matthew Mercer.

In my experiences, I've used description based maps, hand-drawn maps, printed maps, random maps, make-shift tiles, board game tiles (munchkin quest and D&D games) as well as actual quality dungeon tiles.

I have an extensive library of books/campaigns, if not physically, in digital format.