James Lindenbaum co-founded Heroku and Heavybit, and established Heavybit as a fund focused on developer company go-to-market. He advises on developer product design and early GTM, and serves on Begin's board.
What James can write
Heavybit writes $500K to $10M checks, larger than 71% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Heavybit.Career
- Heroku · co-founder
- Heavybit · Founding PartnerNow
- Heroku
Companies founded
Investments named in public bios
Focus
Also at Heavybit
Partners like James
At firms with a similar stage, sector and check size.
Alert me when Heavybit is active
One email when James's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is James Lindenbaum?
James Lindenbaum co-founded Heroku and Heavybit, and established Heavybit as a fund focused on developer company go-to-market. He advises on developer product design and early GTM, and serves on Begin's board.
How much does James Lindenbaum invest?
James Lindenbaum invests through Heavybit, which writes checks of $500K to $10M at pre-seed, seed.
How do I pitch James Lindenbaum?
A warm intro from a founder Heavybit backed works best. A short LinkedIn note with one line on traction is the next best route.
What did James Lindenbaum do before Heavybit?
co-founder at Heroku; Heroku.
Last updated 2026-10-15. Is this you? Ask for a correction.