Firm Etain, formed in 1999, is almost doubling its workforce with a £2.3 million expansion plan.
The jobs boost comes with the aid of money from Invest NI.
Etain is investing in training and marketing in an effort to grow more sales in the Republic and Britain.
Invest NI has offered Etain just over £324,000 of support – just under £10,000 per job.
Said Invest NI chief executive Alastair Hamilton: “Etain is a home grown success story, winning business from markets outside Northern Ireland with its advanced products and services.
“This small but innovative IT firm has grown steadily in recent years and will employ 70 people when recruitment for this latest investment project completes.
“Etain is almost doubling its workforce to meet the needs of key customers. Delivering additional salaries of over £1.1m annually, this expansion is evidence of how local firms are competing strongly in external markets.”