Semble AI builds AI agents that design building-systems (fire, HVAC, plumbing, and security). Construction companies use Semble to replace weeks of manual design work with instant, code-compliant system layouts and bills of materials.

The $600B building-system integration industry still runs on spreadsheets and hand-drawn markups, even as building codes evolve rapidly and grow more localized. It’s one of the largest blind spots in construction tech, and we’re fixing it.

Jonathan and Ethan met studying computer science at Stanford. Jonathan worked at Convergint, one of the world’s largest building-system integrators, to learn the industry from the inside. Ethan’s motivation is personal: his home burned down in 2017 due to a faulty fire system.

We’re building the platform that will become the industry standard for construction-system design, and we’re looking for people who want to build foundational AI products that touch every building on the planet.