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Staff & Board » Colleen Mahaffie
Headshot of Colleen Mahaffie, Marketing and Communications Manager at CSI

Colleen Mahaffie

Marketing and Communications Manager

The ability to communicate clearly and effectively is a foundational skill, which Colleen saw in her youth as a camp counselor with toddlers and as a tutor to high school students. She graduated from Villanova University with a Bachelor’s degree in Communications and worked in marketing for travel and interior design before finding her place in the impact sector. Colleen worked for an environmental nonprofit, Forests Ontario, prior to joining CSI as the Marketing and Communications Manager. Putting people and planet first is a core value for Colleen, and one that she is happy to embody at CSI. Here, she works closely with the team to manage the external communications of the Centre and helps to market its many offerings, ideals, and members. She also has a passion for good design, typography, and the Oxford comma.

Colleen moved to Toronto from the beautiful green mountain state of Vermont. You can usually find Colleen hanging with her rescue pup, Bennie, and exploring the many neighbourhoods of Toronto. She’s always happy to chat about craft beer, politics, and Grey’s Anatomy.

Stories by Colleen Mahaffie

People stand or sit together in conversation on the ground floor of CSI Annex during Innovator Drinks.
Welcome to Connections at CSI, a monthly recap of CSI hosted events and rituals! These community gatherings are just a few of the many events and workshops organized by the entire CSI community.
June Callwood sits in an archyway at Casey House.
June Callwood’s life was full of social activism and fighting for what she believed in to make Toronto a better place for all. As we celebrate Women’s History Month, we’re highlighting Callwood’s life and many achievements.
A group of people face a speaker, who is standing in front of a red curtain, in the lounge of CSI Spadina.
Welcome to Connections at CSI, a monthly recap of CSI hosted events and rituals! These community gatherings are just a few of the many events and workshops organized by the entire CSI community.
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Galloway’s work at CSI involves training AI models to identify invasive mussels on the bottom of the Great Lakes, expanding scientists’ knowledge of the density of these mussels on the vast lake beds. We spoke to Galloway to explore the impacts of invasive mussels, how AI technology can help, and how being a member of the CSI community has benefited Galloway.
A black and white photograph from the 1940s of the Roseland Theatre in New Glasgow, Nova Scotia.
You may know Viola Desmond from school lessons, from history books, from the ten dollar bill, or from the Viola Desmond room on the third floor of CSI Spadina! Desmond was an entrepreneur who helped to catalyze the Canadian Civil Rights movement.
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STEPS Public Art, one of CSI's many esteemed alumni, celebrated a pretty big milestone recently - 10 years! After their big anniversary party at CSI Spadina, we knew we had to catch up with them to learn more about their experience and their first decade of social impact. Read on for the full interview!
A view of 720 Bathurst Street. It is a brick building, 5 storeys tall, and we are looking at the eastern facade, which faces Bathurst Street. The northern wall is covered in ivy.
On Monday, January 22nd, CSI launched the official RFP process for anyone interested in the purchase of the storied brick and beam gem, 720 Bathurst St., that has been home to CSI Annex for the last decade. 
A crowd stands in front of a riser at CSI's 2023 Holiday Gathering. In the foreground, we see the backs of party goers. In the background, we see CSI CEO Tonya Surman giving a speech.
For the sixth year in a row, CSI honoured members with the Bow Tie Award during our annual Holiday Gathering. The Bow Tie Award, named after former CSI Executive Director Adil Dhalla’s proclivity for community leadership (and a certain kind of neck adornment), celebrates those who have gone above and beyond in facilitating connection and strengthening community impact.
A group of people are seated and standing in a circle around Tara, Community Manager at CSI Annex. Event takes place on the ground floor of CSI Annex (720 Bathurst St).
Giving Tuesday encourages us to “give, collaborate, and celebrate generosity. These are some of the CSI members participating in this year’s Giving Tuesday, how your donation will support their impact work, and more information on where to donate.
Canadian Connections team poses at the back of an empty truck
We take a deep dive into the differences between nonprofits and charitable organizations in Canada and look at it through the lens of CSI Member Canadian Connections, who recently transitioned from being a nonprofit to a registered charitable organization.