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Castle vs Chainguard

Side-by-side founder and growth signal comparison.

Castle logoC
Castle Team

Castle

Castle Team

Chainguard logoC
Chainguard Team

Chainguard

Chainguard Team

MetricCastleChainguard
FounderCastle TeamChainguard Team
CountryUnited StatesUnited States
Total Funding$9.00M$356.00M
Last RoundSeries A Khosla Ventures, $9M Series A in 2019Series D Sequoia, $356M Series D in 2025, $3.5B valuation
Hiring RolesOpen RolesOpen Roles
IndustryCybersecurityCybersecurity
StageSeries ASeries D
HeadquartersSan Francisco Bay Area, California, USASeattle, Washington, USA
Employee Count11-50 employees201-500 employees
Tech StackAWS, React, Python, PostgreSQLAWS, React, Python, PostgreSQL
Open CastleOpen Chainguard