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I will build a saas mvp web app with next js and react
Rengelmedia
Level 1
About this gig
You have a SaaS or web app idea but no developer to build it. Most agency quotes are $20K plus, and Bubble prototypes break the moment you have real users.
I build production-ready MVPs with Next.js. Real code you own, deployed and ready for paying users.
What you get:
- Next.js frontend with App Router
- Authentication (NextAuth, Clerk, or Supabase)
- Database (Postgres via Supabase or Prisma)
- Tailwind UI components
- Type-safe TypeScript code
- Vercel deployment with custom domain
- Stripe billing-ready (Premium tier)
- Source code on GitHub, fully yours
Built for founders who:
- Have an idea but no technical co-founder
- Need to launch and validate quickly
- Want code they can hand to a developer later
- Have done research and know what their MVP needs
Stack:
Next.js, TypeScript, Tailwind, Supabase or Prisma, Vercel.
Timeline:
Starter 7 days, Growth 14 days, Production 21 days. Focused work on your build.
Not a fit if:
- You want no-code Bubble or Webflow
- Your scope is "Uber for X with AI agents"
- You need 50 features and ongoing dev
Send me your idea and I'll come back with honest scope and a plan.
Get to know Rengelmedia
Rengelmedia
Building WordPress Sites and Custom Web Solutions That Deliver!
Level 1
- FromNetherlands
- Member sinceSep 2021
- Avg. response time4 hours
- Last delivery3 days
Languages
English, Dutch, German
Hi, I'm Jari, Full-Stack Web Developer. I build high-quality websites that help businesses grow, stand out, and succeed. I specialize in WordPress development and also create custom websites using modern front-end and back-end frameworks. You can hire me to build a complete website or to work on specific features or customizations. With 8+ years of experience and 107+ successful projects, I'm ready to bring your vision to life.
My Portfolio
Other Software Development Services I Offer
FAQ
What stack will you use?
Next.js (App Router) with TypeScript and Tailwind on the frontend. Supabase, Prisma, or Postgres for the database. NextAuth, Clerk, or Supabase Auth for authentication. Vercel for deployment. Stripe for billing on Premium tier.
Will I own the code?
Yes, 100%. The code is delivered to a GitHub repository you own, with full commit history. No proprietary frameworks, no vendor lock-in. You can hand it to any other developer later and they'll be able to read it.
Can you integrate Stripe and billing?
Yes. Stripe Checkout, subscriptions, and webhooks are included in the Production tier. For Starter or Growth, add the Stripe Billing extra ($245). I implement subscription management and customer portal so you can launch a paid product immediately.
What about authentication?
Email + password is included in every tier. Social logins (Google, GitHub, etc.) included in Growth and Production. Magic-link and 2FA available on Production. I default to NextAuth, Clerk, or Supabase Auth depending on your preference.
Where will the MVP be hosted?
Vercel, which is the production-grade host for Next.js. Free tier covers most early-stage MVPs. I deploy on your account, you own the project from day one. Custom domain setup is included.
Can I add features later?
Yes. The code is structured to be extensible, with clean separation between UI and data layers. After delivery, you can add features yourself, hire any other developer, or come back with a custom offer for additional work.
Do you do design and UI?
Standard packages use a clean Tailwind UI library (shadcn/ui or similar). For custom-designed UI, add the Custom UI Design extra ($345). If you have a Figma file, I can implement it as part of the project.
What's the database?
Postgres via Supabase by default (free tier covers most MVPs, scales to production). Or Prisma with any Postgres provider you prefer. For very specific needs (vector DBs, edge databases), message me first to confirm fit.
Will it be mobile responsive?
Yes, every package is mobile-first. Built with Tailwind which means responsive design is baked in, not bolted on. You'll get a consistent experience across phone, tablet, and desktop.
What if I'm not sure exactly what features I need?
Send me your idea and a rough sketch of what you're trying to build. I'll come back with a feature list scoped for the right tier. The Starter package is good for testing one core feature; Growth and Production handle multi-feature launches.
