Devlin said: "It is fantastic news for the club that Bill has decided to take up the challenge at Swindon. I had the pleasure of working with Bill in my time as Chief Executive at QPR and always found his commitment, passion and business knowledge invaluable."
"Bill's football experience helps us to bridge a gap in the Directors team, and will allow other individuals to concentrate on working with the Council and supporters on The County Ground redevelopment plans."
He plans to invest over £1m in Swindon with money up front, and more money in the future which should have to secure Swindon's future.