16. Firstsource Solutions
CEO: Matthew Vallance
Pre-tax profit: £1.0m
Firstsource Solutions started operations in Northern Ireland in 2006 and has contact centres in Derry and Belfast.
The company is a wholly-owned subsidiary of Indian-owned business process outsourcing company Firstsource Solutions, which employs over 29,000 people in 44 centres in India, the US, UK, Argentina and the Philippines.
The firm provides business process management to clients in industries including telecomms, media and healthcare.
The company has been a major recipient of Invest NI grants to bring employment to the Northwest.
Total employment has risen by nearly 500 in the last year although both turnover and profits have fallen.
32 Linenhall Plaza,