After establishing a highly successful venture capital company called the Foundry Group, Feld wrote Do More Faster: TechStars Lessons to Accelerate Your Startup, as well as several other self-help books aimed at fellow entrepreneurs.
While studying at the Massachusetts Institute of Technology in the late 1980s, he co-founded a software company called Feld Technologies.
In 2005, he launched a technology entrepreneurship-themed blog titled Feld Thoughts.
He was raised in Arkansas and Texas, and he later settled in Boulder, Colorado with his wife Amy Batchelor.
He and PayPal founder Peter Thiel both had successful careers as venture capitalists; Thiel famously invested in Facebook right after the social media site's launch in the early 2000s.