The number of jobs advertised online rose by 24% overall year on year, a new survey from Irishjobs.ie shows.
While Irishjobs.ie said the survey showed that jobs advertised online saw a seasonal decrease in the last quarter of the year - falling by 10% - the figures were up significantly compared with the same time in 2011.
The biggest increase was seen in the environment, health and safety sector with online jobs ads jumping by 133%.
This was followed by the manufacturing sector (up 96%), financial services and insurance (65%), marketing (46%) and hotel and catering (25%).
Online jobs advertisements saw declines in the legal, publishing and secretarial and administration sectors. While the construction sector actually saw an increase in the fourth quarter of 2012 - the first since the second quarter in 2009 - the sector was down 14% for the year.
''Sector-wise, the big story is the manufacturing and production where we are seeing a renaissance in manufacturing activity, the only success story for this sector in the euro zone,'' commented Stephen Kinsella, from the University of Limerick and author of the report.
Dr Kinsella said the Irish economy is growing again, when the presence of large multinational companies are accounted for. However, he added that the domestic picture looks rather different.
''Domestic demand for goods and services is still down more than 25% from the peak of the housing bubble. There was a slight increase in the third quarter of 2012 but clearly this hasn't contributed to increasing employers' expectations of a recovery,'' he added.