Tribold, a telecoms software provider, has announced the creation of 45 new IT jobs in Wales, while BT is recruiting 520 engineers.
BT needs the extra staff to implement is fibre broadband network, as it reaches its target to roll out the network to two-thirds of UK premises by the end of 2014, one year ahead of schedule.
Tribold, which provides software to BT, Microsoft, Vodafone, Sky and Alcatel Lucent, is creating the jobs as part of a new research and development (R&D) centre it has opened in Cwmbran, South Wales.
It is looking for software developers with skills including Microsoft C#, quality assurance and automation test engineers and technical support engineers.
The new R&D centre was established with investment from the Welsh government through its Economic Renewal programme.
Separately, 100 jobs have been created in Galway, Ireland, by Canadian technology solutions provider Pivot Acquisition Corp.
Pivot has opened a new Shared Services Centre in Galway to support the company's growth, and will recruit 25 people this year, and up to 75 in 2012. The available positions include IT, software development, process innovation and project management.
Staff at the centre will provide operations support as well as develop the company's technology solutions in areas such as cloud, virtualisation and mobile computing.