Erinys
We help lawyers start and scale AI-native law firms.
About Erinys
Erinys provides the technology, intake, back office, and client acquisition needed to launch and scale an AI-native law firm. Lawyers own their firms and make every legal decision; Erinys handles everything around them.
Founders
Jason Guo
Founder
Founder at Erinys (YC S26). Has experience in very diverse parts of the tech stack, from industrial PLCs to kernel exploitation. In-progress computer engineering degree in the University of Maryland.
Matthew Pallan
Founder
Founder at Erinys (YC S26). Before Erinys, Matthew led greenfield development at multiple organizations, directing engineering across several product groups. He's a deep technical builder across domains, having engineered sub-290ns trading systems for HFT firms and worked in cybersecurity spanning exploitation and security systems. He scored a perfect 180 on the LSAT and studied Computer Science and Real Estate at the University of Maryland.
Sasha Zyuzin
Founder
Founder at Erinys (YC S26). Presented vulnerability discovery research at Black Hat USA 2025 and spoke at the SANS OSINT Summit 2025. Undergraduate researcher at UMD working across IPv6 botnet detection, malware analysis, and hardware security. Previously taught an OSINT course at UMD and led the university's 1800+ member cybersecurity club.