Siemens, the German engineering giant said, it has appointed Bernhard Fonseka as the company’s new chief executive for its rapidly-expanding operations in Qatar. Based in Doha, Fonseka will take on his new role at Siemens WLL, the Qatari unit of Siemens AG, from October 1, 2012 and continue to expand the company’s footprint in the country. Fonseka will succeed Martin á Porta, who was at the helm of Siemens in Qatar since 2010 From : Gulf times.