# Brian McMahon

> Brian McMahon is the New York-based co-founder and CEO of Pickle, a peer-to-peer rental and resale marketplace. A former University of Maryland football player and data specialist at Booz Allen Hamilton and Blackstone, he co-founded the business with Julia O’Mara, learned to code, and helped fulfill its early rentals by subway. Pickle evolved from a 2021 shopping-poll app into a rental marketplace in May 2022 and announced a $12 million Series A in March 2025.

- **Role:** Co-founder and CEO at Pickle
- **Organizations:** Pickle, Blackstone, Booz Allen Hamilton, University of Maryland football, BUILD
- **Education:** Business information systems major; business analytics minor, University of Maryland, College Park, Atholton High School
- **Known for:** Co-founded Pickle and led its transition from social polling to peer-to-peer rentals., Helped secure an announced $20 million across the seed and Series A rounds., Named to the Forbes 30 Under 30 Retail & E-commerce 2024 list, as confirmed by his university.

## Career timeline

- **2012-2014** — Member of the Maryland football team; played tight end and served as a backup quarterback in 2012.
- **2015-2018** — Interned and then worked in data science strategy consulting at Booz Allen Hamilton.
- **2018-2021** — Worked at Blackstone, including data and product work; met future co-founder Julia O’Mara.
- **2021** — Left Blackstone and launched the original social-polling version of Pickle with O’Mara.
- **2022-05** — Relaunched Pickle as a peer-to-peer rental marketplace.
- **2023-10** — Announced $8 million seed financing co-led by Craft Ventures and FirstMark, with Burst Capital.
- **2023-12** — Announced Pickle’s first New York store in the West Village.
- **2025-03** — Pickle announced $12 million Series A funding, bringing announced funding to $20 million.
- **2026-02** — Appeared on Unit Economics to discuss the pivot, logistics and marketplace economics.

## Achievements

- Co-founded Pickle and led its transition from social polling to peer-to-peer rentals.
- Helped secure an announced $20 million across the seed and Series A rounds.
- Named to the Forbes 30 Under 30 Retail & E-commerce 2024 list, as confirmed by his university.
- Listed in Maryland’s 2014 Academic All-Big Ten football honors.

## Latest updates

- **2026-07** — Pickle and its rental users were featured in Fortune on July 27, 2026.
- **2026-03** — In an Observer interview, McMahon discussed improving customer experience in 2026, expanding beyond fashion and eventual international expansion.
- **2026-02** — Featured on the February 26 Unit Economics episode about Pickle’s origins, delivery operations and marketplace model.

## Links

- Website: https://www.shoponpickle.com
- LinkedIn: https://www.linkedin.com/in/brian-mcmahon-50130083

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Profile page: https://yespress.io/brian-mcmahon
Published by YesPress — https://yespress.io
Last updated: 2026-10-25