Our founders

Having first-hand experience with engineering workflow inefficiencies, we built CalcTree to create a step-change for how engineers design and collaborate.
Mahan Lamei
CTO
Frustrated with the inefficiencies of re-creating calculations and workflow logic on most GeoTechnical projects, Mahan believed there had to be a better way.
Mahan Lamei
CTO
Onur saw first-hand the data fragmentation challenges in the construction industry during his time as a Product Manager at Archistar.
Mahan Lamei
CTO
Tim lived the pain of calculation management at Arup as a senior structural engineer and knew it had to be addressed differently.