Eric Kessler is founder, principal, and senior managing director of Arabella Advisors, a Washington, D.C.-based philanthropic consultancy that caters to left-leaning clients. Arabella Advisors also manages a number of center-left funding and fiscal sponsorship organizations, including 501(c)(4) Sixteen Thirty Fund, 501(c)(3) New Venture Fund, 501(c)(3) Hopewell Fund, and 501(c)(3) Windward Fund. Kessler himself is closely involved with these organizations, often serving as the founder, principal officer, or board member in them.
Kessler is closely involved in Democratic Party and left-wing politics. He is a former Clinton administration White House appointee and previously served as national field director for the League of Conservation Voters.  Kessler later served as a member of the now-defunct Clinton Global Initiative. 
Kessler chairs a committee on culinary advocacy for the center-left James Beard Foundation and is co-founder of the Chef Action Network. He also serves on the board of directors of the National Democratic Institute.