Sachin Agarwal is a technology entrepreneur and cybersecurity expert renowned for co-founding Signal Sciences, a pioneering web application security company established in 2014 with Andrew Carlton. The company specialized in runtime application security protection (RASP) and next-generation web application firewalls (WAF), focusing on securing APIs and microservices. Signal Sciences was acquired by Twilio in 2019 for approximately $250 million. Agarwal served as CTO of Signal Sciences and later as CTO of Twilio's security business unit post-acquisition, leading integration efforts within Twilio's communication platform. His work emphasizes scalable, developer-friendly security tools in cloud-native environments.

Prior to Signal Sciences, Agarwal held significant engineering roles at Google (working on search infrastructure and distributed systems), VMware, and other startups, building expertise in large-scale software development, systems programming, and security. He holds a Bachelor of Science in Computer Science from Stanford University and is active in the tech community as an author, speaker, and mentor, addressing topics like web security, DevSecOps, and cloud computing at conferences such as Black Hat and AWS re:Invent.

Based in the San Francisco Bay Area, Agarwal continues to influence cybersecurity through advisory roles and investments in early-stage startups. His contributions have established him as a thought leader in application security, bridging development and security teams.