Prior to joining SPF IN 2001, Magnussen worked as a broker for John Charcol and Woolwich Property Services.
She said: “I'm thrilled to be joining Dragonfly. Since it started in 2009 it has raised the bar in the world of short-term finance and continues to drive the sector forward. There's a huge amount of energy and innovation within the short-term finance industry and I can't wait to experience it first-hand."
She will report to Mark Posniak whose role has been expanded from head of marketing and operations to head of sales and marketing.
Jonathan Samuels, chief executive of Dragonfly, said: "Maria is a fantastic addition to the Dragonfly team while Mark's new role and extra responsibility reflects the impact he has made at the company. Without his drive, contacts and forensic knowledge of the sector there's no way we would be the company we are.”
He added: “Looking forward we've got our eyes set on making 2013 our best year yet and have set some very big targets. To ensure we meet them we will be announcing further strong hires in the weeks and months ahead."