How I Built ELCV.app in 2 Weeks Using Supabase, Vercel, and Gemini

A Resume Builder… Built in Just 2 Weeks?

Yes. And here’s how.

ELCV.app is a simple, multilingual AI-powered resume builder that lets users create and download a professional CV without needing to sign up. It supports any language, includes AI rewriting tools, and offers a clean one-page UX.

I built it from scratch in just under three weeks, solo.

This post is for makers, devs, indie hackers, or anyone interested in the actual tech stack and thought process behind a small SaaS product launch.

Problem First, Code Later

Before I wrote a single line of code, I validated one thing:

People struggle to write professional CVs — especially in languages other than English.

Most resume tools are:

• English-only

• Complex or bloated

• Locked behind sign-up or subscriptions

So I wrote down 3 core principles:

1. Multilingual input/output

2. No sign-up required to generate

3. Super cheap pay-as-you-go download model

The Tech Stack

I wanted a serverless, scalable, zero-maintenance setup. Here's what I used:

Frontend

• React + TailwindCSS – lightning fast development and responsiveness

• Next.js on Vercel – SSR, image optimization, easy deployment

• ShadCN UI – for modern components

Backend / Auth / DB

• Supabase

  • Auth: Email/password login (optional)

  • Postgres DB: To save resume content (if logged in)

  • Storage: For user-uploaded photos and resume backups

AI Tools

• Gemini API

  • Rewriting user CV content

  • Generating cover letters

  • Analyzing CV quality (coming soon)

Payments

• Kashier API (Egypt) for fast local micro-payments

• Stripe or crypto support is planned for global users

PDF Generation

• HTML-to-PDF via puppeteer-core on Vercel edge functions

• Output options: PDF, JPEG, PNG

Launch MVP, Learn Fast

Instead of waiting for everything to be “perfect”, I launched the first version with:

• 6 templates only

• 1 AI prompt per CV

• 3 download format (PDF, JPG, PNG)

• Only guest mode (no login)

The result? People actually used it.

What’s Next?

• More AI features: CV grading, tone correction

• More templates: By industry & design

• Global payment support (Stripe, Razorpay)

Lessons Learned

• You don’t need to build a giant product to be useful

• AI + nocode/devtools = launch fast, iterate faster

• Make the path to value instant — no forced login, no upsells

• A $0.50 product is still a business — if the UX is 🔥

Try ELCV.app

Want to see it in action?
👉 https://elcv.app

Try building a resume in your native language, and let me know what you think.

Built solo, shipped fast, and growing every day

Thanks for reading!
Hossam