City of Mississauga announces changes to its senior leadership team

The City of Mississauga is making the following changes to its senior leadership team, effective Thursday, May 1, 2025:

Commissioner Corporate Services, Chief Financial Officer and Treasurer

Marisa Chiu, current Chief Financial Officer and Treasurer, will become the Commissioner of Corporate Services, Chief Financial Officer and Treasurer. Chiu joined the City in March 2023, and has overseen the development and adoption of two City budgets. Before joining the City, Chiu was the Comptroller of Finance and Enterprise Risk and Interim Executive Officer of Finance at the Toronto District School Board, where she managed a diverse portfolio and a $3.5 billion budget. In her new portfolio as Commissioner, Chiu will continue to manage the Finance division, as well as oversee the Corporate Business Services and Information Technology divisions.

Biography: Marisa Chiu

City Solicitor and Commissioner of Legislative Services

Graham Walsh will take on the new portfolio of City Solicitor and Commissioner of Legislative Services. Walsh returned to the City of Mississauga in 2024, having previously served as the City’s Deputy City Solicitor from 2018 to 2023 and Legal Counsel from 2012 to 2017. He also served as Solicitor and Director of Legal Services for the Region of Waterloo from 2023 to 2024. In his new portfolio, Walsh will continue to manage Legal Services, while taking on oversight of the Legislative Services and Human Resources portfolios.

Biography: Graham Walsh

Commissioner of Community Services

Raj Sheth will assume the role of Commissioner of Community Services. Sheth is currently the Commissioner of Corporate Services, a position he has held since May 2023. Sheth has been with the City of Mississauga for 30 years, serving in progressively senior roles including Director of Facilities and Property Management where he oversaw the building of many City facilities, including community centres, libraries and fire stations. In the role of Commissioner of Community Services, Sheth will oversee the following service areas: Recreation and Culture; Library; Parks, Forestry and Environment; Facilities, Planning & Development; and Enforcement.

Biography: Raj Sheth

These organizational changes were recommended by City Manager and Chief Administrative Officer (CAO) Geoff Wright and were finalized through Mayoral decisions.

Quotes

“Mississauga’s success lies in our ability to adapt and strengthen our leadership to meet the needs of our growing and evolving community. These changes bring together a team of talented professionals with the expertise and experience needed to deliver on our city’s priorities. They reflect our dedication to ensuring that our residents and businesses are at the heart of everything we do. Marisa, Graham, and Raj bring a deep understanding of our city’s needs and a strong commitment to serving our community, and I am confident they will continue to serve our residents and businesses with integrity and vision.”– Mississauga Mayor Carolyn Parrish

“We are in an ever-changing environment facing new municipal challenges and opportunities. This new organizational structure will help us navigate both, to ensure we’re ready for whatever comes our way. Both Marisa and Graham have been serving Council on the front bench and will now join the Leadership Team to move the City forward. Raj has been a long-time member of the Leadership Team and I am confident he will excel in the Community Services portfolio. We have a strong team ready to serve Mississauga residents and businesses.” – Geoff Wright, City Manager and Chief Administrative Officer

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