Brian MacMahon

Founder & Managing Partner atEXPERT DOJOCalifornia

Brian MacMahon is a founder & managing partner at EXPERT DOJO, which invests at pre-seed, seed across sectors, with checks of $25K to $100K.

What Brian can write

Writes checks of$25K to $100K
Comes in atPre-seed, SeedCan lead the round
Ownership target5-7%At first check
Email the firm[email protected]The firm's own inbox for founders.

EXPERT DOJO writes $25K to $100K checks, larger than 1% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: EXPERT DOJO.

Also at EXPERT DOJO

Partners like Brian

At firms with a similar stage, sector and check size.

Alert me when EXPERT DOJO is active

One email when Brian's firm raises a fund, adds a partner or shows new activity.

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Questions

Who is Brian MacMahon?

Brian MacMahon is a founder & managing partner at EXPERT DOJO, which invests at pre-seed, seed across sectors, with checks of $25K to $100K.

How much does Brian MacMahon invest?

Brian MacMahon invests through EXPERT DOJO, which writes checks of $25K to $100K at pre-seed, seed.

How do I pitch Brian MacMahon?

Email [email protected], the firm's inbox for founders, and name Brian in the subject. A warm intro from a founder EXPERT DOJO backed works better.

Last updated 2026-10-15. Is this you? Ask for a correction.