Craig is the co-founder and Managing Member of SD Asset Group, LLC, a holding company, with a portfolio of captive engineering and construction companies, as well as private equity investments in various technology firms. Among the captive SD Asset holdings that Esterly co-founded is CSD Engineers, LLC, a multi-disciplined industrial design/engineering firm, with offices in Pittsburgh, Philadelphia, Chicago, and Houston.

Mr. Esterly has extensive prior volunteer experience in community foundations and donor advised funds. He is currently involved in many nonprofit activities, serving as President of the Punta Gorda Rotary Foundation, Director of Water4Mozambique (Punta Gorda), Board Member and former Vice Chair for  TEAM Punta Gorda, Director, Chair of Planning Committee for the national Hepatitis B Foundation, Director, Chair of Quality Committee for UPMC Presbyterian/Shadyside Hospitals (Pittsburgh, PA), and Assistant Treasurer, Chair of Quality Committee of The Shadyside Hospital Foundation (Pittsburgh, PA).