Jobs at Castle
Block bots & bad behavior
About Castle
as of Nov 2026New AI agent detection[1]
Castle provides developer-grade infrastructure to stop bots, abuse, and fraud by turning user behavior into real-time signals. They offer a comprehensive platform of data, tools, and APIs to eliminate the need for multiple disconnected tools, aiming to build the trust layer the internet never got.[2]
Product
The Castle platform offers a complete stack of data, tools, and APIs to detect and prevent fraud and abuse. Key features include IP intelligence, device fingerprinting, bot detection, AI scoring, AI agent detection, email intelligence, case and state management, behavioral analysis, a rules engine, and advanced analytics.[1]
Sells to: developers[2]
Founders
- Shardul Shah[2]
- Phin Barnes[2]
- Olivier Pomel · CEO[2]
CEO at Datadog
Previously: Datadog
- Eric Berg[2]
Former CPO at Okta
Previously: Okta
- Jim Cyb[2]
Former SVP Sales at Duo
Previously: Duo
- Zack Urlocker[2]
Former COO at Duo
Previously: Duo
- Rene Bonvanie[2]
Former CMO at Palo Alto Networks
Previously: Palo Alto Networks
- Ludwig Pettersson[2]
Former Head of Design at Stripe
Previously: Stripe
- Jim Gochee[2]
Former CTO at New Relic
Previously: New Relic
- Ryan Petersen[2]
CEO at Flexpo
Previously: Flexpo
[ Open roles ]
- Backend Software EngineerRemote
Castle is hiring a Backend Software Engineer to build and maintain REST APIs using Django, manage cloud infrastructure, and oversee CI/CD pipelines. The role involves developing a bill payment system, an AI-powered payment recording system, and a data pipeline for customer insights.
- Software EngineerRemote
Software Engineer at Castle, a finance app for homeowners. This role involves building and maintaining a financial platform, web and mobile applications for expense tracking, and AI-powered data pipelines for savings insights. Requires strong computer science fundamentals, problem-solving skills, and the ability to write clean, maintainable, and well-tested code.