Engineering firm Charter International has appointed Gareth Rhys Williams as its new chief executive officer with immediate effect, filling the position left open by its previous head Michael Foster, who resigned after the company's disappointing performance.On June 28, Foster stepped down from his position as chief executive officer, saying that he was leaving by "mutual consent" after taking over from David Gawler in 2006. Williams, who was the chief executive officer of safety equipment manufacturer, Capital Safety Group from 2008 to 2010, will take the helm at a time when Charter is still lagging behind its engineering peers in recovering from the global economic crisis. Williams said, "I am delighted to be joining Charter, a company with a long heritage, leading global brands and positions and considerable growth potential. I believe there are substantial opportunities for operational improvement across the company."Charter, which had rejected the revised approach from investment firm Melrose, was trading down 1.1% at 818p in London.AR