Eatock (pictured) founded the firm in 2004.
Nick Eatock will return as Intelliflo's chief executive officer.
Founder of Intelliflo Eatock (pictured) replaces Hamish Purdey who is leaving the firm to pursue new challenges.
Purdey joined Intelliflo in November 2014 when Eatock became executive chairman.
Eatock said: "I am delighted to be returning to the role of chief executive at an enormously exciting timing for the organisation.
“Having worked closely with Hamish for the last five years we will be able to effect a seamless transfer of responsibilities and ensure continuity for staff and clients alike."
“Hamish has done a fantastic job over the last five years with Intelliflo, a period in which we have grown the business to 35% market share, with almost 23,000 users.
“I'd like to thank Hamish for his enormous contribution and wish him well in his future endeavours."
Purdey added: "I have thoroughly enjoyed my time with Intelliflo. I am very proud of everything we have achieved, including the seamless integration of business critical systems, the development of the Personal Finance Portal (PFP) and the ability to deliver access to new technology for advisers, such as open banking.
“I am confident I am leaving the business well positioned for continued success and growth."
