Overview
Gradon is Legora for the firms that design the world's buildings and infrastructure. Every road, bridge, water system and building starts with engineers, and there aren't nearly enough of them for everything the world needs to build.
Gradon works across every workflow and tool an engineering firm runs on, from CAD design and calculations to full plan sets, and firms using it today have decreased average project times by more than 75%. We're building the platform that makes every engineer a 10x engineer, and with it, how the world gets built.
Founders & team
Previously Vendo
Nour Zahzah
Founder/CEOCo-Founder & CEO at Vendo (YC S26). MechE at UC Berkeley. Previously founded a company building in-store AI shopping assistants for retailers and did mechanical design for startups. Played professional academy soccer at SJ Earthquakes for 7 years.
Yousef Helal
Founder/CTOCo-Founder at Vendo (YC S26). I graduated top of my class from UC Berkeley at 19, and then went and got an MS from Stanford.
I previously designed software and hardware at Apple (FPGA infrastructure) and AMD (Microblaze V), and then founded a startup building in-store AI shopping assistants for retailers. Before that, my teachings methods as a TA at Berkeley won awards and got published in a paper.
Founded 2026 · Source ↗
Sources & observations
Y Combinator
Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 2 of 6 areas documented
Source-based assessment · automated evidence rules
The retained text does not establish product availability or customer use.
Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.
- Product overviewSource description Checked 2026-11-11
- Product visualsNot documented
- Founders & originsTeam information
- Business model & pricingNot documented
- Funding & ownershipNot documented
- Dated milestonesNot documented
Stage definitionsindependent websitesource corroborationreachable websitedescriptive evidencesourced peoplesourced founding yearrecent publishing observed