
FlowManual
AI for Construction's Back Office.
About FlowManual
FlowManual is the all-in-one AI estimating, bidding, and purchasing platform for both general and MEP construction contractors. Built by two engineers and Harvard dropouts, FlowManual automates the buying process during pre-construction. With FlowManual, specialty contractors win more work while general contractors deliver at higher standards.
Founders

David Shijoon Bae
Founder
Co-founder & CEO @ FlowManual. Automating Construction Contract Procurement. Previously MechE @ Harvard.

Michael Lin
Founder
Co-Founder and CTO at FlowManual. Previously SWE intern at Dijie, where he built a video-based landing page that scaled revenue from $3K to $336K MRR and reduced latency from 800ms to 100ms. Published CS researcher at UC Santa Cruz, co-authored paper submitted to IEEE IV 2025.