The London-based firm received a £244,000 grant from Invest NI in 2008 to set up its Belfast software development facility, committing £2.5 million of its own money and hiring around 25 staff.

It is now promising to increase staff levels to 115 over the next three years after gaining another £970,000 in assistance for its operations developing trading, portfolio analysis, decision support, compliance, market data and connectivity technology.

Chris Aspinwall, CEO, Fidessa, says: "The Belfast centre has been central to the development of our new products and services for the international market and we have been delighted with the calibre of software engineers we have been able to recruit."

Last year Invest NI handed over £8 million in funding to US banking giant Citi to secure 440 new IT and operations jobs and gave capital markets tech house First Derivatives £1.29 million towards a major research and development push. The previous year Nyse Euronext received £9.6 million to support 400 jobs at a new development facility.

First minister Peter Robinson says: "The financial services technology sector is important to the Northern Ireland economy in its potential to create wealth through high value jobs and export focused trading. This investment is a welcome confidence boost for the economy, which, as we begin this New Year, is still facing many challenges and will help to drive the growth and international reputation of the financial services sector in Northern Ireland."