Persistent Systems is bulking up with the acquisition of Europe services provider Nagarro in a deal valued at nearly $1.3 billion. The combined company will have $2.9 billion in annual sales and more than 46,000 employees. Nagarro, based in Munich, will add about 18,500 employees and $1.14 billion in annual sales. Nagarro also has a strong Europe footprint in digital engineering across industrial, consumer, telecom and financial services. Persistent is strong in North America.