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Katie MacGuire

Co-founder, Vubble

Media Tech

Katie MacGuire is a co-founder of Vubble, the Toronto media technology company she started with Tessa Sproule after the two met at CBC. Before Vubble she worked in CBC's new media department, made documentaries at CBC TV, worked on CBC Radio's As It Happens, and later worked at BabyCenter. Communitech described her as Vubble's co-CEO in 2021.

Katie hasn’t spoken on a TechTO, TechVancouver or TechWaterloo stage. This profile is here because Katie co-founded Vubble, which appears in 1 talk in the archive.

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Quick answers

Did Katie MacGuire co-found Vubble?

Yes. Vubble's about page, checked September 24, 2026, says the company's origin story starts with Tessa Sproule and Katie MacGuire, who first worked together in public broadcasting. In an article published August 19, 2014, Media in Canada reported that Sproule was creating Vubble in partnership with fellow former CBC staffer Katie MacGuire.

What did she do before Vubble?

In a TechPortfolio interview published June 20, 2016, she said she grew up in Alabama, studied political philosophy and religious studies at McGill, joined CBC's new media department in Toronto, spent time at the Canadian Film Centre, made documentaries at CBC TV, worked on CBC Radio's As It Happens, and then moved to BabyCenter.

How did the idea for Vubble come together?

In the same TechPortfolio interview from June 20, 2016, she said she was living in Waterloo and wanted to start a business. She pitched Sproule, then still at CBC, an app idea; Sproule had an idea of her own, and MacGuire told her to leave CBC and start.

What was her role at Vubble in 2021?

A Communitech article published July 23, 2021 called her co-founder and co-CEO of the seven-year-old, six-member company, and quoted her on Vubble's four months of testing its video Categorizer on the ENCQOR 5G testbed, which she said helped the team set development priorities for the following year.

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Maintained by TechTO · facts sourced and dated · last reviewed Sep 24, 2026