Joel O.

You want your own CRM or business software, and you want to sell it to other businesses as a subscription. That means each customer gets their own secure account, billing works on its own, and you can run it all from one admin panel. I'm a Top Rated full stack developer who builds SaaS products that are ready to sell: separate accounts for each customer business, user roles, Stripe subscriptions with plan limits, dashboards, and AI features where they actually help. WHAT I BUILD • Custom CRMs: contacts, pipelines, tasks, follow-ups, reports • White-label SaaS: your brand, many customer businesses, each with its own data • Billing: Stripe subscriptions, free trials, plan limits, failed-payment handling, webhooks • Admin panels for you, and dashboards for your customers • AI features: assistants, summaries, smart follow-ups (OpenAI, Claude) • Already started in Lovable, Base44 or Replit? I make it secure and launch-ready, usually without a rebuild WORK I'VE DELIVERED ON UPWORK • Appointment booking platform with a business dashboard, built in 8 milestones from planning to launch testing • Stripe payments: fixed failed webhooks and payment integrations on Base44 and full stack AI apps • SaaS architecture review for a non-technical founder on a Base44 MVP • Deployment fixes on Replit apps, plus a Squarespace domain connected to a Replit app • Cleanup of a messy AI generated Lovable Next.js and Node app, plus Base44 backend repairs • Real estate app: redesign and bug fixing on Base44 HOW A PROJECT WORKS 1. SaaS Blueprint (paid): we agree on the features, user roles, pricing plans and database plan, and I give you a fixed price 2. Build in milestones: you get a working preview link after each one 3. Launch: tested, deployed on accounts you own, with a walkthrough video 4. Grow: I stay on for new features as your customers ask for them You own the code, the accounts and the data. I write updates in plain English and flag any risk early. STACK Next.js, React, TypeScript, Node.js, Supabase, PostgreSQL (row-level security), Stripe, OpenAI and Claude APIs, n8n, Vercel, GitHub. I use Claude Code and Cursor to move fast, and I review and test every change myself. Tell me what your software should do and who you'll sell it to. I'll reply with the first version I'd build and a price range.