Kevin O'Sullivan has been appointed as UniSuper's chief executive, replacing retiring CEO Terry McCredden from 1 July.
O'Sullivan has spent the last 22 years as Russell Investments' director, actuarial and benefits consulting, and was instrumental in establishing its total retirement outsourcing business.
The initiative saw the outsourcing of a number of large corporate superannuation schemes to Russell.
UniSuper chairman Chris Cuffe said O'Sullivan emerged as the best-placed candidate to lead the fund due to his breadth of experience.
"His experiences in product design and managing complex superannuation products are first rate," he said.
"Kevin has also demonstrated himself to be a strategic, long-term thinker who has the kind of engaging consultative style that is so important for working effectively with stakeholders both internally and externally."
According to Cuffe, McCredden has left the fund in a strong position, "having effected significant changes to the organisation's capability, systems and processes" since he took the helm five years ago.
The fund has hired a former ART executive as its new head of group strategy.
The sovereign wealth fund has revealed six internal hires to support the execution of key strategies.
The fund has announced the departure of a second senior executive in as many months, with its chief member officer to finish up mid-December.
The $89 billion fund has announced a new leadership role within its private markets team.