Hillen has been a director of the specialist bridging lender since 2012; previously he held numerous senior banking roles.
He was senior corporate director at the Royal Bank of Scotland, managing director of Anglo Irish Bank for Scotland and Northern Ireland and head of commercial and corporate banking at the Bank of Ireland for Scotland.
Hillen said: “The market for short-term lending continues to grow.
“Smaller independent providers like Alpha Bridging are well placed to help advisers and their clients with the funding they need, particularly for the increasingly important short-term cash injections that SMEs need in order to grow.
“I am looking forward to taking a greater role in helping Alpha Bridging move to the next level.”
Mercedez Binning, managing director of Alpha Bridging, added: “Having worked with Kenneth over the past eighteen months and seen how he has helped the business develop, I am delighted to see him take on this key role as Alpha is planning to expand its operations considerably over the next twelve months.
“And I am sure that Kenneth will have a central role to play in helping us achieve those objectives.”
Alpha Bridging has operated in the UK for the past three years.