Marlton will focus on securing new business and building relationships with brokers in and around Bristol.
The lender offers up to 80% loan-to-value and is a subsidiary of finance firm S&U plc.
Borro offers bridging loan valuation in 48 hours.
The high net worth broker has launched an office in Monaco and will expand to Dubai in quarter three, as it aims to become a global mortgage broker.
For the year ending 31 December 2016 the specialist bank increased its loan book by 42% to £617m, operating income rose 29% to £40.8m and customer deposits grew by 46% to £664m.
The specialist lender provides bridging and development finance.
After a shaky political climate in 2016, the bridging industry saw a last minute recovery in 2016,
Largest first charge the lender has written in 10 years.
Brokers need to put more processes in place to counter increased due diligence from bridging lenders in the wake of uncertainty following Brexit, Brian Rubins, managing director of Alternative Bridging Corporation, has claimed.