Whittaker will remain CEO of the Property Business Group which owns the brokerage and also buy to let lending brand, Keystone Property Finance.
Olejnik (pictured) has more than 20 years of leadership experience in business development within the mortgage and retail banking sectors.
He joined the Mortgages for Business broker team in 2002 after 14 years as a retail banker with NatWest and a short time as a financial adviser with The Woolwich.
During his time with the firm he has won the Complex Buy to Let Broker of the Year 2017 at the British Specialist Lending Awards and Buy to Let Broker of the Year 2012 at the British Mortgage Awards.
Olejnik said he was ready for the challenge ahead as he took on the lead role at the firm.
“The buy-to-let mortgage market in particular has become more complex in recent years,” he said.
“I’m keen to ensure that we remain at the forefront of helping landlords implement wise financing strategies to run successful portfolios.”
Whittaker credited Olejnik with his work building the business already.
“This is a well-earned step-up for Steve who has been my right-hand man for many years now,” Whittaker said.
“I trust him implicitly to lead the business through our plans for rapid growth. He has the drive and the diplomacy to deliver.”
Whittaker added that he was not retiring but would be focusing on other elements within the group.
“Last week we moved Keystone into new offices and that’s where I shall be focusing my efforts.
“We’ve got some exciting developments afoot which I hope to share in the coming weeks,” he added.