Erinys
YC S26San Francisco, US · Founded 2026 · 3 employees · 1 known investors
Erinys launches and operates AI-native law firms, providing lawyers with the software, support staff, back office, billing, compliance, working capital and growth infrastructure needed to run a turnkey firm. It targets practicing lawyers who want to start their own firm while retaining biglaw-level pay and equity ownership.
AI & Machine LearningEnterprise SoftwareLegalTechSaaSArtificial IntelligenceLegalUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
Erinys was founded in 2026 by Jason Guo, Matthew Pallan, and Sasha Zyuzin.
JG
Jason GuoinFounderJason Guo is the founder of Erinys (YC S26) and has worked across a broad range of the tech stack, from industrial PLCs to kernel exploitation. He is currently pursuing a computer engineering degree at the University of Maryland.
MP
Matthew PallaninFounderHe previously led greenfield engineering efforts across multiple organizations, built low-latency (sub-290ns) trading systems for high-frequency trading firms, and worked in cybersecurity covering exploitation and security systems; he studied Computer Science and Real Estate at the University of Maryland.
SZ
Sasha ZyuzininFounderSasha Zyuzin is the founder of Erinys (YC S26) and an undergraduate researcher at UMD focused on IPv6 botnet detection, malware analysis, and hardware security. He has presented vulnerability discovery research at Black Hat USA 2025 and spoken at the SANS OSINT Summit 2025, and previously taught an OSINT course and led UMD's cybersecurity club of over 1,800 members.
Investors · 1
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Frequently asked questions
- What does Erinys do?
- Erinys launches and operates AI-native law firms, providing lawyers with the software, support staff, back office, billing, compliance, working capital and growth infrastructure needed to run a turnkey firm. It targets practicing lawyers who want to start their own firm while retaining biglaw-level pay and equity ownership.
- Who founded Erinys?
- Erinys was founded by Jason Guo, Matthew Pallan, Sasha Zyuzin in 2026.
- Who are Erinys's investors?
- Erinys's investors include Y Combinator.
- Where is Erinys headquartered?
- Erinys is headquartered in San Francisco, US.