Cambridge Radio Frequency Services was co-founded in 2007 by chief executive Alistair Massarella, 47, to provide spectrum monitoring services such as tracking wi-fi usage in airports and public buildings. Its biggest client is the Brazilian government, which contracted the firm to develop systems for the World Cup and the 2016 Rio Olympics. The company has grown by investing in product development and international expansion. It is based in Cambridge but has two offices in America and 90% of its £5.6m sales are from exports.
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