Constellation Energy has appointed Jason M Mullens as vice president, human resources for its merchant energy subsidiary, Constellation Energy Resources, effective immediately. In this role, Mr Mullens will be responsible for leading the integrated human resources capability for the merchant organization of Constellation Energy. He will jointly report to Shon J Manasco, senior vice president and chief human resources officer, Constellation Energy, and Kathleen W Hyle, senior vice president, Constellation Energy, and chief operating officer, Constellation Energy Resources.