Reactionary Capital
Reactionary Capital is a Seed, Series A venture capital firm based in San Diego, CA investing in Other, Developer Tools. The firm typically writes $1.0M–$4.5M checks and has 2 portfolio companies in our records.
- Check size
- $1.0M–$4.5M
- Portfolio
- 2 companies on record
- Partners
- 12 listed
- Stage
- Seed, Series A
- Sectors
- Other, Developer Tools
- HQ
- San Diego, CA
- AUM
- Not in our records
Last verified: 2026-07-18
Seed, Series A
$1.0M – $4.5M
2+ companies
12 partners
Investment Thesis
Investing in startups focused on next-gen cloud data solutions and code-driven middleware for developers.
How Reactionary Capital invests
Reactionary Capital is a vc firm based in San Diego, CA. The firm invests at the Seed, Series A stages, with a focus on Other, Developer Tools. It does not invest in Gaming, EdTech.
Reactionary Capital typically writes checks of $1.0M–$4.5M per investment.
Reactionary Capital has backed 2 companies in our records, including SnowConvert, Airbyte.
Partners & Team
Jonathon Lee
Partner
Natasha Thomas
Partner Experience
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (2)
Other
SnowConvert
Airbyte
- •Raising at Seed, Series A? You're squarely in their sweet spot.
- •Lead with your fit in Other, Developer Tools — the sectors they actively back.
- •Size your ask to their typical $1.0M – $4.5M check.
- •cold outreach ok
- •Address your outreach to a specific partner, such as Singari Seshadri, Founding Partner.
- •A warm introduction beats a cold email. Get matched and request an intro.
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