Deane will be a member of both the audit and remuneration committees, acting as chair of the audit committee.
Optimum Credit has appointed Stuart Deane to the board as a non-executive director.
Deane is also a non-executive director of Experian and Sainsbury's, where he was chief trading officer for the past three years.
He will be a member of both the audit and remuneration committees, acting as chair of the audit committee.
Ashish Kashyap, chairman of Optimum Credit, said: “We are delighted to welcome Stuart to the board.
“He brings significant lending experience across the mutual and banking sectors gained over his 25-year career in financial services firms including Sainsbury’s Bank and the Principality and Portman Building Societies.
“We are looking forward to his insights and inputs as we continue to grow the business.”
Deane has worked in financial services for 25 years including over five years at Principality Building Society, most recently as managing director, distribution and eight years at the Portman Building Society where roles included director, branch distribution.
