Cork, who has 20 years’ experience of international technology and investment banking, will join Landbay co-founders John Goodall and Gray Stern in leading the business.
Cork worked at JPMorgan for 15 years before moving to Macquarie Group as global head of technology for the corporate and operations groups.
John Goodall, co-founder and chief executive of Landbay, said: "Julian’s fantastic hands-on management experience in banking and technology will be incredibly useful as we put in place the operational structures we need to continue our growth.
“His deep understanding of wholesale financial services means that he is perfectly placed to help us to develop new strategic partnerships with institutional investors, who are increasingly attracted to Landbay’s innovative model.”
Cork also has international experience in institutional banking, having worked in New York, Tokyo, Sydney and London.
He said: “Landbay’s rapid growth since launching last year is impressive and I look forward to helping steer the business through the next phase of its development.
“Landbay has a fantastic proposition and this is a really exciting time to be joining the team.
“The inclusion of P2P within ISAs will be a big opportunity for the sector as a whole, and Landbay is perfectly placed to benefit because of the way it mitigates risk for lenders.”
Landbay is targeting building a £1bn loan book within the next four years.