Matheson managing partner Michael Jackson said the San Francisco office will allow the Dublin-based firm “to support our West Coast client base with operations in Ireland, and also our Irish client base accessing international markets”.

Mr Jackson added: “We are seeing growth in the areas of technology, data protection, fintech, intellectual property, international corporate transactions and tax.

“The new office will focus on these areas as well as other key areas including pharma, medtech and financial services.”

Thenew office will be led by Matheson West Coast head partner Mark O’Sullivan together with technology and privacy partner Chris Bollard, who joins the firm on Tuesday 1 August.

Mr O’Sullivan said: “The US West Coast is an important technology and innovation ecosystem with significant investment into Ireland. Face to face relationships are as important to us as they are to our clients - and all of our global offices are partner-led.

“The global technology industry is booming, fuelled by advancements in emerging areas such as AI and data analytics. Post-Brexit, Ireland, with an already large presence of technology multinationals, has the capacity to benefit from additional US investment into Europe.

“The opening of our San Francisco office will support our continued collaboration with our clients and help them to remain competitive as they deal with the complexity of the current market conditions.

“Furthermore, working with the strong Irish Government support network and the IDA on the West Coast, we can play a part in integrating more of these companies into Ireland, ultimately creating revenue growth and job opportunities.”

In parallel with the expansion, Matheson announced seven new senior appointments:

The firm will also welcome both Chris Bollard and Deirdre Kilroy as partners in its technology and innovation group in August.