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Did Richard Sim co-found Proxxi?
Yes. TechCrunch reported on October 18, 2018 that Proxxi was "Founded by Richard Sim and Campbell Macdonald". A Proxxi blog post dated October 16, 2020, titled "Meet Our Founders!", says "Richard and Campbell are our co-founders here at Proxxi" and names Sim as chief technology officer.
How did Proxxi start?
With a BC Hydro brief for a wearable. In a Smithsonian interview published June 10, 2016, Macdonald said: "My business partner Richard Sim is an engineer; we met at the Vancouver Hack Space." He said BC Hydro gave the pair a small grant and that "within a few months in the spring and summer of 2015, we'd developed a working prototype." TechCrunch's October 18, 2018 article says the company began when BC Hydro "tasked Sim to research a product that would protect workers from electricity."
What is his engineering background?
Hardware, software and games graphics. His personal site, richard-sim.com/about, checked September 23, 2026 (the page itself is undated), describes him as "a full stack product engineer (software, hardware, mechanical, production)" and says he was formerly "a Lead Graphics Software Engineer for some of the largest video game development companies in the world" and ran the consultancy Mesophase Development.