James co-founded Heroku where he obsessed over developer experience details like reducing workflows from two commands to one, then founded Heavybit specifically to help devtool founders with the go-to-market challenges he experienced firsthand. He champions a bottoms-up enterprise adoption framework where developer tools sell through developers rather than to them, and looks for deeply technical, design-forward tools that empower expert developers rather than replace them with low-code abstractions.
About their Fund
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Heavybit
Sectors
Devtools, Enterprise, AI, Cybersecurity, Data
Rounds
Pre-Seed - Series A
Avg Check Size
$500K - $5M
Notable Investments
Heavybit is the leading early-stage investor in enterprise infrastructure. Since 2013, we've helped launch and scale visionary technical startups—from DevSecOps and feature flagging to AI code generation and beyond. We go hands-on from day 0, backing founders as they turn code into companies and build the future of software from the bottom up to the top down.
Notable Fund
Investments
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Popular Investors
investor name
Active in
Rounds
Avg. Check
Links
Deeptech / Hardware
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Robotics
Biotech
+
12
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Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Biotech
Health
Deeptech / Hardware
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$250K - $2M
Unknown
Climate
Deeptech / Hardware
Materials
+
4
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $1.5M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
7
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
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Deeptech / Hardware
Robotics
Biotech
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
~$750K
Unknown
Fintech
Deeptech / Hardware
Devtools
+
2
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
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