Ambuj Kumar is Co-Founder and CEO at Simbian, an AI security operations platform that uses autonomous agents to accelerate security operations across diverse IT environments.

Ambuj was Co-Founder and CEO at Fortanix where he raised $135M and pioneered Confidential Computing, and spent 8 years as lead engineer at NVIDIA building the first generations of GPUs that power today's AI revolution.

Ambuj holds over 100 patents across computer science, cryptography, and cloud computing, and earned his MS from Stanford University and B.Tech from IIT Kanpur as Gold Medalist.

Simbian raised an oversubscribed $10M seed round in April 2024 from investors including Cota Capital, Icon Ventures, Firebolt, and Rain Capital, with notable angels like Olivier Pomel (Datadog CEO) and Joe Sullivan (former CSO at Meta, Uber, Cloudflare).

Ambuj won the 2024 Security Innovator Award and the IIT Kanpur Distinguished Alumni Award 2025, and Simbian's AI agents enable security teams to scale coverage 10x or more while automating level-1 and level-2 security analyst operations.