It’s expected around 390 Meta employees in Dublin will by made redundant by mid-December.
It's part of large-scale reductions across the company, with 11,000 people being let go globally.
The tech firm's reducing its global workforce by 13% as part of a wider shake-up of the business following a fall in online commerce.
Around 100 people work in Cork's Meta offices, which are based on the top of the Capitol Building on Grand Parade.
It's understood the number of redundancies affecting its Dublin office is in line with the global figure, though that can’t be confirmed until a 30-day consultation process is completed.
In a statement, founder Mark Zuckerberg apologised to staff, saying overinvestment during the e-commerce boom felt during the pandemic, along with increased competition and a macroeconomic downturn has left the company with less money than expected.
Here outside its European Headquarters in Dublin, staff were informed not to speak to the media.
Two employees did stop to tell me there’s a nervous energy inside the office.
Tanaiste Leo Varadkar says redundancy packages will be granted to the affected staff.
