A managing director in the energy team at global buyout firm Carlyle has left after just four months to join Pamplona Capital Management, the investment firm backed by Russian billionaire Mikhail Fridman’s Alfa Group, according to two people familiar with the situation.

London-based Pamplona hired Joao Saraiva e Silva from Carlyle at the beginning of September, one of the people said. The move came just four months after Carlyle hired him to help lead a new energy team focused on oil and gas exploration and production in Europe, Africa, Latin America and Asia.