Jeff Wampler
Jeff co-founded Blackjack in 2025 and serves as Co-CEO. Prior to founding Blackjack, Jeff served as EVP, Engineering and Evaluations with 89 Energy where he led the Reservoir Engineering, Development Budgeting & Planning, Reserves, and A&D Evaluation functions for the company.
Prior to joining 89 Energy, Jeff held technical roles at Kayne Anderson and Warburg Pincus, working with management teams across most basins in the U.S. and Canada to evaluate and underwrite deal opportunities, and build and manage long-term plans for each business. Jeff started his career at BP where he held roles covering reservoir and completions engineering then joined Hilcorp Energy Company, holding engineering and leadership roles across multiple Asset Teams and the New Ventures and A&D Groups. Jeff received a B.S. in Petroleum Engineering from the University of Oklahoma.