Pamela Richardson, commercial director for Capital FM Scotland has been appointed as sales director for STV, while Kris Yule has taken the role of digital sales manager.
She will take responsibility for co-ordinating the direct client and agency account teams in Scotland, reporting to commercial director Peter Reilly.
Meanwhile, former general manager for display advertising for The Scotsman Publications, Yule will report to Steven Walker and work closely alongside Reilly and the commercial team.
Anthony Polydorou and Stuart Kuczynski, will transfer from the STV commercial team to take up the roles of account director in London.
Peter Reilly, commercial director, said: "These appointments are designed to ensure Scottish agencies and direct clients receive an outstanding service which enables them to grow their businesses in partnership with STV across all our commercial assets. This also reflects the increased opportunities arising from STV's successful multi-platform strategy and will enhance our presence in both Scottish and London markets."