SocialGO, the AIM-listed developer and provider of software for social network building, has appointed Alex Halliday as its new chief executive.

At 25 years old, Halliday is the youngest chief executive of an AIM company. The company has also made Dominic Wheatley executive chairman of its board, and Ian Livingstone has taken on a non-executive director role.

Tim Wade has been appointed to the board of Monetise as non-executive director and chairman of the firm’s audit committee. Wade holds independent non-exec roles on the boards of Macquarie Bank International and Access Bank UK, and is chief executive of Finance Pronto.

He was formerly a managing director at AMP, and is a qualified accountant and lawyer.

Renaissance Capital
Renaissance Capital has hired a new chief executive, Clifford Sacks, to run its African operations. Before starting at Renaissance Capital in early 2010, Sacks worked for 12 years at Merrill Lynch, becoming co-chief executive of the bank’s Africa operation in 2006.

He will continue his current role for Renaissance Capital as chief executive of South Africa, and head of African equities.

The Dutch-headquartered bank has appointed Richard McGuire as a senior fixed income strategist in its global financial markets group in London. He will join from RBC Capital Markets, where he led the Eurozone and UK rates strategy team for six years, prior to which he was a lead analyst at Dun & Bradstreet.

Richard will report to Jan Lambregts, who is global head of financial markets research, and will lead a small fixed income strategy team focused on the Eurozone markets.

Asset manager Threadneedle has appointed Matthew Cobon as a fixed income fund manager in its developed government and currency team, which is led by Quentin Fitzsimmons.

Harris Williams & Co
In yesterday’s paper City A.M. reported on the appointment of Julien Darmon as managing director at Harris Williams & Co. Though the company was described as a US law firm in the article, it is actually a mid-market investment firm.