Mathieson, who was responsible for the execution of Standard Life’s platform strategy, will be responsible for overseeing the financial affairs of the Nucleus wrap.
She replaces Neil Howitt who left the platform in November.
Nucleus chief executive David Ferguson says: “Aileen is a hugely talented individual with a wealth of knowledge of the platform market and excellent commercial experience. To have been able to attract someone of her calibre to join the team is not only a huge endorsement for what has already been achieved at Nucleus but an indication of the size of the opportunity that lies ahead for the business.”
Mathieson, who joins in March, will also sit on the board alongside Ferguson and chairman Paul Bradshaw.