Hacker & photographer. CEO @valetdotio, @Columbia dropout.

Check us out @filmcourage on Youtube - New video daily at 5:00 p.m.!

Top Writer On Medium. Writer of 90+ books under multiple pen names. Yes, I make money writing ebooks.

Staff Software Engineer @ Medium • https://jacob.bio • I write about software engineering, product design and development, and leadership in tech.

Digital Marketing Expert, Multilingual — I help companies bring value and revenue by focusing on optimization

Rooter-man is a cleaning company, provides solutions for plumbing, sewer and drain cleaning problems of customers. https://rooterman.com/eastern-pa/

Inventor of the hashtag. Product therapist. Investor. Previously: Google, Republic, Uber, On Deck, YC W’18.