Mr Haslem was formerly managing director, chief economist and head of macro research for UBS in Australia and New Zealand.
Crestone was launched in 2016 after a number of senior UBS managers bought out the Swiss financial services giant’s Australian wealth arm.
The firm’s current CIO David Sokulsky will be departing Crestone.
“We are delighted that Scott will join us at Crestone and pleased to have the opportunity for a measured handover between Scott and David over coming weeks,” said Crestone spokesman Adam Ginnivan.
“These opportunities include providing extensive economics research and investment strategy across all asset classes, but in particular equities and fixed income opportunities, and engaging with all our clients, fund managers, superannuation funds and financial advisers.”
Correction: A previous version of this article mistakenly inferred that Mr Haslem is currently at UBS. It has since been amended to clarify that he departed from the company in June 2017.