Belfast has fought off competition from the US and elsewhere to secure 58 new top tech jobs for the city.
Lou Shipley, boss of US firm Black Duck Software - which works in cyber security - said he looked at adding new jobs in Boston, but chose Belfast instead. He said Invest NI had helped make moving here an easy choice.
The jobs, which have average salaries of £37,000, will be appointed over the next four years.
The firm helps companies manage their use of open source software, which is a type of software which has free licences.
The new posts will be security research jobs, with eight already in place. The company is also looking for new offices here.
Mr Shipley said: "We looked in Boston, our head company is primarily based in Burlington, Massachusetts, and it is a matter of finding the best talent and scaling it up as quickly as possible.
"We considered a number of places for this new open source security research group, and found that Belfast had the depth of security research talent that fit our needs."
Economy Minister Simon Hamilton said Northern Ireland is becoming a growing player in the cyber security industry, with around 600 people now working in the sector.
"This was an investment which is mobile, and could have gone anywhere in the world.
"The team at Black Duck came here because of the talent of our people."
Black Duck received £377,000 from Invest NI towards the new jobs. The firm says the new posts will be worth around £2m in salaries to the Northern Ireland economy each year.
Mr Hamilton said: "Northern Ireland has invested significantly in cyber security research and in growing the number of computer science students at both Queen's and Ulster universities in recent years.
"Belfast is Europe's leading destination city for software development investment and Black Duck Software has joined a growing cluster of world-class companies choosing to invest in Northern Ireland."
A number of cyber security firms have set up shop in Northern Ireland.
Companies include Alert Logic from Texas, which announced it will create 90 jobs in Belfast.
Other businesses in the sector include Proofpoint, Whitehat Security and Rapid7.