# Bailey Pumfleet

> Bailey Pumfleet is the New York-based co-founder and CEO of Cal.com. He began building its predecessor, Calendso, at 17 in 2021 after responding to co-founder Peer Richelsen’s call for engineering help. The company raised a $7.4 million seed round and a $25 million Series A. In April 2026 he announced that its production code would go private, while Cal.diy would continue as an MIT-licensed community project. His other public projects include depart.nyc and tech house DJ performances.

- **Role:** Co-founder and CEO at Cal.com
- **Organizations:** Cal.com, depart.nyc
- **Known for:** Co-founded Cal.com after building its early scheduling product at 17., Helped build a company that raised $32.4 million across its seed and Series A rounds., Helped establish an Open Startup model with published company metrics, salaries and handbook.

## Career timeline

- **2021** — Began writing Calendso code at 17 while employed in in-house software engineering at a backup and disaster recovery company; started as a paid contractor for Peer Richelsen and became a co-founder.
- **2021** — Calendso rebranded to Cal.com; company raised a $7.4 million seed round.
- **2022** — Cal.com announced a $25 million Series A on April 15, led by Seven Seven Six, alongside an API and app store.
- **2026** — Announced on April 14 that Cal.com’s production code would move to a private repository while Cal.diy continued under the MIT license.

## Achievements

- Co-founded Cal.com after building its early scheduling product at 17.
- Helped build a company that raised $32.4 million across its seed and Series A rounds.
- Helped establish an Open Startup model with published company metrics, salaries and handbook.
- Developed depart.nyc, listed on his personal site as a New York subway tracking app.
- Performed tech house sets at Harbor NYC, Temple Nightclub San Francisco and the Graduate Hotel rooftop in New York.

## Latest updates

- **2026-04** — Announced the move of Cal.com production code to a private repository, citing AI-assisted vulnerability discovery and customer-data protection; retained Cal.diy as an MIT-licensed community project.
- **2026-03** — The 021 Podcast published a long-form conversation about his upbringing, company origins, fundraising and goal of connecting a billion people by 2031.

## Links

- Website: https://baileypumfleet.com
- LinkedIn: https://www.linkedin.com/in/baileypumfleet/
- Twitter/X: https://x.com/pumfleet
- GitHub: https://github.com/pumfleet
- YouTube: https://www.youtube.com/@baileypumfleet
- Instagram: https://www.instagram.com/baileypumfleet

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