Currently based in London, Mr Tallon will join the firm’s UK office later this year before relocating to Dublin in mid-2026.

He brings more than eight years’ international experience advising high-growth companies, founders and investors across the full corporate lifecycle.

Mr Tallon joins McCann FitzGerald from another international firm, where he worked extensively with clients across Europe and the US on a wide range of financing rounds, exits and strategic transactions.

Stephen Holst, managing partner at McCann FitzGerald LLP, said: “This appointment strengthens our corporate transactions group and reflects our focus on delivering strategic, commercially grounded advice across borders.

“Stephen brings a rare combination of international experience and sectoral insight that will be a real asset to our clients. We’re delighted to welcome him to the firm.”

Mr Tallon said: “Clients operating in fast-moving, cross-border environments value advice that combines strategic clarity with legal precision.

“McCann FitzGerald brings deep insight into how founders and investors approach scale, investment and decision-making across markets, and is recognised for delivering advice that’s commercially grounded and pragmatic.

“The firm is clearly building momentum, and I’m looking forward to contributing to its work with clients.”

His appointment brings the total number of partners at McCann FitzGerald to 98, following recent additions in competition, technology and knowledge management.