LTIMindtree expanded its presence in middle east by opening its regional headquarter in Saudi Arabia’s capital, Riyadh. The move is a part of the company’s expansion in Kingdom of Saudi Arabia (KSA) and the Middle East, said the company in a filing with BSE.The development also comes three months after the sixth largest Indian IT service firm picked up 51% controlling stake in a new joint venture (JV) formed with Global Digital Integrated…