Hamish Purdey has taken up the job at the technology firm whose software is used by 1,250 financial services firms.
Intelliflo's founder and former chief executive Nick Eatock moves up to the role of executive chairman.
Mr Purdey was chief executive at FfastFill plc from 2009 through to 2013, over which period the company grew from a market capitalisation of £28m to £110m.
Mr Eatock said: "Whilst I am moving to a new role within the business, I continue to remain wholly committed to Intelliflo's success.
"There are huge strategic and product opportunities currently available to Intelliflo which require me to focus my time on ensuring these opportunities are delivered.
"To allow me to do this effectively the business requires a strong operator to focus on the core operational areas. Having met with many potential candidates over the summer, it was clear that Hamish is ideal for the role. Attracting Hamish is a real coup for the business and I'm delighted to have him on board."
Intelliflo's key product, Intelligent Office has 11,250 users from 1,250 firms with assets under advice of £172 billion.
Mr Purdey said: "I am delighted to join Intelliflo at such an exciting time in the company's history. I have huge admiration for Nick's leadership and how he and his team have developed Intelliflo into a major force in software services that operate at the heart of the UK's financial advice sector. I look forward to working with him to continue this growth over the coming years."
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