They never crossed paths at the University of Virginia, but their shared background as student-athletes made the connection immediate.
“An instant click,” Justin Grender said.
Grender, a 2022 UVA graduate and former All-America swimmer, is two years into his role as operations manager for Mezcla, a plant-based protein bar company founded by 2019 UVA graduate and former national champion lacrosse player Griffin Spolansky.
The fast-growing startup now sells its protein bars in more than 9,000 retail outlets nationwide, including Costco and Whole Foods in Charlottesville. In March, Mezcla closed a $9.5 million funding round.
Grender, a 2022 statistics graduate from the University, is two years into his role at Mezcla. Only 25, Grender feels like he’s reached his “dream job” alongside Spolansky, a fellow former Wahoo student-athlete. (Contributed photo)
“Justin is arguably the most important piece of the business,” Spolansky said, “because he’s the one who ensures that all our product gets to our retailers. He’s getting trucks from Canada to Chicago to Florida to California, and that’s a lot of mess you have to deal with.
“I attribute a lot of our success to him.”
When UVA Today first introduced readers to Spolansky and Mezcla in October 2023, Grender was working as a business systems analyst for Peloton, the fitness-tech company known for its subscription-based live and on-demand workout classes.
On the surface, that made sense – the former collegiate athlete working for the company that fuels home gyms everywhere.
“It seemed like it was going to be great,” said Grender, who earned his degree in statistics. “But it wasn’t growing. I wasn’t learning. It was kind of this stagnant, full-time job, and I could kind of coast – and I didn’t want to coast.
“I wanted to be challenged. I wanted to be busy, have a productive day.”
Missing the team environment he’d experienced as a UVA swimmer, Grender jumped when a Mezcla opportunity surfaced on LinkedIn. An interview followed in March 2024.

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