Every founder I work with wants the same thing: a working product in front of real customers as fast as possible. After building 350+ SaaS products, I've refined a process that consistently delivers a launch-ready MVP in 2–4 weeks.

Week 1
Foundation
Week 2
Core Features
Week 3
Payments & Polish
Week 4
Launch

Before Week 1: Scope Lock

The projects that blow past deadlines almost always share one cause: the scope wasn't locked before development started. Before I write a single line of code, I do a 2-hour scoping session with the founder. We define:

  • The core user journey — what does a user do from sign-up to getting value?
  • The MVP feature list — maximum 8–10 features
  • The payment model — subscription tiers, pricing, trial period
  • The data model — what entities exist and how do they relate?
  • What's explicitly OUT of scope — as important as what's in scope

Week 1: Foundation

The first week is infrastructure. It's not glamorous, but it determines everything else.

  • Project setup on Replit with Next.js and TypeScript
  • Database schema in Supabase — every table, relationship, and index defined upfront
  • Authentication with Clerk — sign-up, login, forgot password, email verification
  • Basic layout and navigation — header, sidebar, dashboard shell
  • Environment configuration — development, staging, production

By end of week 1, a founder can sign up, log in, and see a dashboard. The plumbing that everything else builds on is solid.

Week 2: Core Features

This is where the product takes shape. Week 2 focuses exclusively on the features that make the app valuable.

  • The primary CRUD operations for the main entities
  • The core user workflow — the thing users do in the app every day
  • Basic API integrations — any third-party services the app depends on
  • Real-time features if needed — Supabase subscriptions for live updates

Want This Process Applied to Your SaaS?

I take 2 clients per month. If you're serious about building a $1M+ SaaS on Replit, let's talk now.

DM Me on Fiverr →

Week 3: Payments and Polish

No SaaS is complete without billing. Week 3 integrates Stripe and addresses the UX quality that converts users into paying customers.

  • Stripe Billing integration — subscription plans, trial periods, payment collection
  • Customer portal — let users manage their own subscriptions
  • Webhook handling — payment success, failure, cancellation events
  • Feature gating — premium features locked behind paid plans
  • Onboarding flow — first-run experience that guides new users to value
  • Email notifications — welcome email, payment receipt, cancellation confirmation

Week 4: Launch Readiness

The final week is about making the product trustworthy and ready for public launch.

  • Error handling — graceful failures, not crashes
  • Loading states — every async operation has feedback
  • Mobile responsiveness — tested on real devices
  • Performance optimization — lazy loading, image optimization, caching
  • Security review — authentication, authorization, input validation
  • Custom domain setup on Replit
  • Analytics integration — track signups, activations, and churn

What Happens After Launch

Launch isn't the end — it's the beginning. The first 30 days after launch are the most valuable for learning. I stay available for a 30-day post-launch support period on all projects.

We went from idea to first paying customer in 23 days. I couldn't believe it was possible until it happened. — B2B SaaS founder, 3 weeks post-launch

If you have a SaaS idea and want to know if it's feasible in 4 weeks, message me on Fiverr and I'll tell you honestly within 24 hours.