Rumney joined Pact, the industry group for UK indie producers, last June as director of legal, business affairs and industrial relations.
Prior to joining Pact, he worked at Carlton Television & Film in business affairs, and more recently as head of business affairs at September Films, which is now part of DCD Media.
Rumney said: “I am delighted to be appointed deputy CEO of Pact at an important juncture for the future of the sector. The challenges are many – from the Terms of Trade review and the consequences of a Digital Single Market, to BBC Studios and the future of Channel 4.
Pact CEO John McVay added: “Max has proved to be an invaluable contributor to the Pact team and after 1.5 years he has shown himself to be an exceptional executive.”
Pact last had a deputy CEO back in 2010, making this, effectively, a new position. Then-deputy CEO Andrew Chowns is now at Directors UK.