Mark Johnson
Founding Partner at Focused Apps LLC
Oakland, California, United States
Summary
👤
Senior🎓
Top SchoolMark Johnson is a founding partner and veteran iOS app entrepreneur with 15+ years building high-performance mobile and client-server systems from Oakland, CA. He co-founded Focused Apps, which has published around 20 apps and driven over 50 million downloads, earning Apple App of the Day placements, Time Magazine recognition, and multiple #1 rankings across dozens of countries. Technically hands-on in Objective-C and Unity3D, he pairs game and app development with performance engineering, capacity planning, and mobile advertising expertise. His background includes architecting scalable check-imaging systems for major banks and early work in distributed systems and research, reflecting a rare combination of product instincts and deep systems experience. He’s open to partnerships with game makers, publishers, advertisers, and investors—preferring collaboration over traditional employment.
15 years of coding experience
13 years of employment as a software developer
BEng (hons), Computer Engineering, BEng (hons), Computer Engineering at Queen Mary University of London
Stackoverflow
1,105reputation
301kreached
17answers
0questions
Github Skills (22)
godot10
game-engine10
open-source10
game-development10
caching8
asynchronous7
swift7
xcode6
iphone6
memory-management6
jailbreak6
objective-c6
ios6
itunes4
appstore3
Programming languages (2)
Github contributions (4)
markofjohnson/HJCache
Jan 2011 - Apr 2011
iOS asynchronous download, sharing, and caching library for images and more
Contributions:19 commits, 2 PRs, 1 push in 2 months
asynchronouscachingsharingswiftios
markofjohnson/godot
Mar 2024 - Mar 2024
Godot Engine – Multi-platform 2D and 3D game engine
Contributions:20 pushes in 3 days
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