Swedish telecoms equipment maker Ericsson is looking to cut up to 130 jobs across its Irish operation.
It is understood most of the job losses will be at the company's Dublin operation.
SIPTU, which is representing employees at the firm, said Ericsson is seeking to reduce its headcount via voluntary redundancies, with a VR scheme starting today that will remain open for two weeks.
The firm will also seek to redeploy staff across its Irish operation where possible.
The company said the redundancies are "to ensure a competitive business model aimed at securing long-term growth and linked to the technology needs of our customers".
Ericsson added that it regrets the impact of the announcement and "remains committed to R&D in Ireland and will continue to employ over 1,200 people in our Athlone and Dublin campuses".
Last December the company announced it was cutting 59 jobs at its Dublin office as a result of a cost and efficiency programme.
Ericsson is in the midst of a global restructuring programme to make cost savings of nine billion Swedish crowns - just under €1 billion.
It has an Irish workforce of about 1,400 between its software campus in Athlone and services campus in Clonskeagh, Dublin.
Earlier this year Ericsson announced a Q1 operating loss of more than €1 billion, with its business hit by shrinking markets and restructuring costs.
The company has been cutting thousands of jobs at its operations around the world. This process is still under way.
Ericsson has been hit by a drop in spending by telecoms firms, with demand for next-generation 5G technology still years away, and weaker than expected growth from its emerging markets, such as Russia, China and Latin America.
It also faces mounting competition from China's Huawei and Finland's Nokia.