McDowell (pictured) will join from Aldermore Bank where he is currently commercial director of mortgages.
He will take up his new position with Hampshire Trust from October 1 and will sit on the bank’s executive committee, reporting to chief executive Matthew Wyles.
Wyles said: “Charles is a rising star in the mortgage market and I am pleased beyond words that he has agreed to join us.
“Our specialist lending business has massive, untapped potential and I know that Charles will lead the division with energy, flair and skill.
“He will be supported by Alex Upton who has just joined us as sales director – they will be a formidable double act.
“I want Hampshire Trust to be a magnet for the best and brightest talent in the market and Charles’ appointment is testament to that commitment.”
McDowell added: “Matthew and the board of Hampshire Trust have ambitious plans for the business and I am thrilled to be playing such an important role in developing and delivering the bank’s strategy in the specialist lending market.”