Lead Engineer, 2025

flowsimple.co ↗
FlowSimple

FlowSimple is a CRM for small home service contractors: roofing, HVAC, plumbing, lawn care. A job moves from lead to estimate, schedule, field work and payment without anyone retyping it.

I led the team and made the architecture calls. We built it as a PWA so the office runs it on a laptop and the crew runs it on their phones, from one codebase.

  • 01Three roles. Owners see everything, managers run operations, crew only see their assigned jobs.
  • 02Estimates go out as a public link and PDF. Customers accept, decline or ask for changes from their phone.
  • 03Day, week and month scheduling with crew assignment and recurring jobs.
  • 04Crew view with Google Maps directions, checklists and photo uploads from the browser camera.
  • 05Revenue, win rate and lead source reports, with CSV export.

Built with

  • Next.js
  • NestJS
  • Fastify
  • PostgreSQL
  • Better Auth
  • AWS
  • Google Gemini
  • Google Maps SDK
  • PWA
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