We are Castle

The team says hi. Get to know us and learn about our mission.

Let's make the Internet a safer place

A collaborative platform for keeping hackers out of your web and mobile apps

It's 2016, and still no decline in password breaches. Businesses are struggling frantically to protect their customer data from leaking into the wrong hands. As a consequence, customers are forced to use longer and more complex passwords, turn on two-step verification, and regularly keep an eye on their account activity - for every single service they use.

This shift of responsibility to the customer must stop. It is about time that companies take the next step in securing their products, and we are here to help. Whether you're building a bitcoin service, e-commerce store, mobile app, or any other customer-facing application, Castle will have your users' accounts protected from fraud and hijacks within minutes. And the more we are, the better our algorithms will get at catching the bad guys.

We're committed to making a security solution that plugs in to any environment at any level, and just works. Without the need for predefined rules, professional training, and expensive support deals. A security framework for the next-generation of cloud services.

Meet the team

Castle is built by a tight knit team of data nerds coding out of San Francisco.
Any way we can make our customers sleep better at night makes us happy.

Team johan
Johan Brissmyr
CEO & Co-founder
Team timo
Timo Engelhardt
Software Engineer
Team filip
Filip Tepper
Software Engineer
Team charlotte
Charlotte Huang
Data Scientist
Team aus
Ghislain Lacroix
Software Engineer
Team sebastian
Sebastian Wallin
CTO & Co-founder

Our investors

Our mission is to build a passwordless future.
These are some of the people that believe we can make that a reality.

Investors@2x