I’m Johnathan - a full-stack web who ships web applications from ground-up to production. Next.js for web, Supabase for backend, and AI/LLMs where they add real value. 8+ years building AI-powered products for healthcare, fintech, real estate, and SaaS teams.
If you're a founder with an idea (or a half-built product), I can take it to production.
I'm a full-stack engineer. I help founders go from "we have a Figma" to "we have paying users."
No contractor handoff. No "the frontend dev can't wire Stripe." I own the whole thing - architecture, code, deployment, monitoring.
Here's what I've shipped recently:
→ AI SaaS MVP: zero to first paying customer in 4 weeks (Next.js + Supabase + OpenAI + Stripe)
→ Multi-tenant SaaS: 150+ customer accounts, per-tenant data isolation via Supabase RLS, zero cross-tenant incidents in prod
→ CRM automation: replaced 30 hrs/week of manual data entry with a Python + Twilio webhook pipeline. ROI in month one.
→ RAG internal assistant: cut support response time ~60% for a B2B SaaS team
My stack: Next.js · Supabase · Node.js(Express/Nest.JS) · Python (FastAPI/Django) · Stripe · OpenAI/Anthropic · Vercel · AWS
The founders I work best with usually have one of these problems:
◾ Need an AI SaaS MVP shipped in 4–6 weeks
◾ Want multi-tenant architecture done right from day one
◾ Have "vibe-coded" output from Cursor/Lovable that broke in production
◾ Are stuck on a stalled contractor handoff
If any of that sounds familiar - send me a message. I respond within a few hours and I'm happy to talk through what you're building before any commitment.
8+ years · AI · Fintech · Real estate · B2B SaaS · Healthcare