2x founder

Joanathan McIntosh

Co-founder @ Billow AI (YC S26) | 2x Exited Founder building in Accounting & Finance

Co-founder

Billow AI Labs· Summer 2026 🇺🇸 Palo Alto, California, United States

in LinkedIn 𝕏 @joanathanlmc

2026Co-founder· The Billow AI

Founder · since 2021

Company

The Billow AI

Role

CEO & Co-founder (YC S26)

current

Stage

—

no public source

Raised

—

no public source

Based

Palo Alto, California, United States

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

Billow AI Labs

AI-native Accounting Firm to Replace the Big-4

Summer 2026

Experience

Career

The Billow AI
Co-founder
CEO & Co-founder (YC S26) · Palo Alto, California, United States · 2026 – Present
2026
Opaper
Founder
CEO & Founder (Acquired) · 2021 – 2025
2021
Lacuna Technologies
Senior Product Manager - Data, Payments, AI/ML · Palo Alto, CA · 2019 – 2021
2019
StreetLight
Senior Product Manager - Data, AI/ML (Acquired) · San Francisco, CA · 2015 – 2019
2015
Merrill Lynch
Associate · Menlo Park · 2014 – 2015
2014
To-Go Ware
Head of Finance (Acquired) · Emeryville, CA · 2012 – 2014
2012

Bio

Co-founder & CEO of Billow AI Labs. Repeat, exited founder - built an accounting/ERP software (45,000 businesses in 4 years). Formerly en-route to become a CPA/CFA, ex-Merrill Lynch and StreetLight Data (AI/ML for the U.S. government and regulated industries).