BT has started a recruitment drive for 190 engineers to help roll out fibre broadband in Wales.
Carmarthen is one of the areas it is looking to recruit in.
The 190 in Wales are among 1,600 new jobs to be created throughout the UK, and women and ex-armed forces personnel are hoped to take on many of the roles.
BT said its Openreach business had spread fibre broadband to two thirds of the country - more than 19 million UK homes and businesses.
The new jobs will aim to accelerate this spread.
"Not only are we building a superfast broadband network, which is giving a major boost to Welsh households and businesses, we are creating highly skilled local jobs offering exciting careers, such as those announced today,” said Ann Beynon, BT director for Wales.
"Working with our partners in the public sector we are determined to ensure that Wales is in the best position possible to take full advantage of the superfast broadband revolution."