Explore
Challenges
For Business
For Startups
Who We Are
Results
Get Started
Launch a challenge
Connect with talented problem solvers
Solve a challenge
Join our community and win prizes
Log In
menu
log in
Explore Challenges
For Business
For Startups
Who We Are
Results
share
Follow
Following
Unfollow
message
Michael Wittmann
Federal Republic of Germany, Germany
more
About
Following
Followers
Activity
Awards
Activity
About
Following
Followers
Activity
Awards
Jan. 2, 2022, 5:52 p.m. PST
The Column SpeedConnection Challenge
registered for challenge
Nov. 30, 2016, 8:40 a.m. PST
Space Poop Challenge
registered for challenge
