Quilter retail customer solutions director John Porteous has left the company just over a year from when he took on the role.
Porteous, who was previously Towry's client proposition head, joined Old Mutual Wealth, now Quilter, in September 2017. Towry was acquired by Tilney in April 2016 and Porteous was subsequently appointed head of client proposition.
In his position he was tasked with helping the firm's vertically integrated business model and how this interacted with clients and advisers.
A statement from Quilter said: "John joined in 2017 to focus on customer experience and services across Quilter's end-to-end wealth management solutions.
"Having laid solid foundations and established the retail customer solutions function, John has now left to seek new challenges.
"We would like to thank John for his contribution and he leaves with our best wishes."
The team headed by Porteus will now report directly to the firm's chief marketing officer, Michelle Andrews. She has been chief marketing officer at the firm since 2017, and with the company since 2012. Prior to that, she worked at Skandia in a variety of roles.
Prior to his time at Towry, Porteous was partner, head of wealth managementat Baker Tilly Financial Management where he was responsible for private client financial planning and investment management services He also worked at Macquarie Bank and BDO Stoy Hayward.
Quilter is the business formerly known as Old Mutual Wealth, and listed on the London Stock Exchange last year, following a managed separation from parent company Old Mutual.