You will get fix 1 bug in your Next.js/React app within 24h (clean PR + explanation)

Rayan S.Status: Offline
Rayan S. Rayan S.
5.0
Rising Talent

Let a pro handle the details

Buy Web Application Programming services from Rayan, priced and ready to go.
Rayan S.Status: Offline
Rayan S. Rayan S.
5.0
Rising Talent

Let a pro handle the details

Buy Web Application Programming services from Rayan, priced and ready to go.

Project details

What you’ll get

A fast, professional bug fix for your Next.js / React / TypeScript app

A clean delivery: PR/commit + explanation of what was wrong & how it was fixed

Communication: quick questions, quick updates, no fluff

Common issues I fix

Next.js build errors, hydration issues, SSR/CSR bugs

TypeScript errors, broken UI, runtime crashes

API integration bugs (fetch/axios), auth edge cases

Vercel deployment failures, env vars misconfig, routing issues

Performance bottlenecks (basic optimizations)

To keep this project quick & affordable
This project is designed for small, clearly defined issues.
If your issue requires a large refactor or includes multiple unknowns, I’ll first send:

a clear diagnosis,

options + estimate,

and we can upgrade to the right tier.
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$49.99
Standard
$99.99
Advanced
$149.99
Delivery Time 1 day 2 days 3 days
Number of Revisions
112
Number of Pages
111
Design Customization
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Content Upload
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Responsive Design
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Source Code
Optional add-ons You can add these on the next page.
Additional Revision
+$25
extra bug/issue (+ 1 Day)
+$39.99

Frequently asked questions

5.0
1 review
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SC

Savior C.
5.00
Jan 28, 2026
Frontend Developer for AI-Powered Korean Website (Next.js, Vercel, Supabase)
Rayan S.Status: Offline

About Rayan

Rayan S.Status: Offline
Full-Stack SaaS Engineer | TypeScript / Python / Stripe /AI Automation
5.0  (1 review)
Le Mans, France - 7:16 pm local time
Full-Stack SaaS Engineer | NextJS · FastAPI · Stripe · AI Automation 🚀

I build production-ready SaaS platforms and web applications.
From MVP to deployment, I handle the full stack: TypeScript/NextJS frontend, Python/FastAPI backend, Stripe payments, and cloud infrastructure.

What I deliver: 🛠️
→ SaaS MVPs built from scratch (auth, billing, dashboard, API)
→ Stripe integration: subscriptions, payment intents, webhooks, usage-based billing
→ AI/LLM automation pipelines (OCR, data extraction, async workers)
→ REST APIs & real-time features (WebSockets, Redis)
→ Production deployment: Docker, CI/CD, VPS/cloud

Recent projects: 📌
• Pont Factur-X — B2B SaaS converting PDFs to compliant e-invoices with AI extraction (Mistral LLM), Stripe billing, async pipeline. Built solo, live in production.
• Pick4Me — Marketplace with escrow payment flow, Stripe Issuing virtual cards, real-time chat (Socket IO), push notifications.

Why me: ✅
✓ 4+ years in production (not just tutorials)
✓ I’ve built complete SaaS products end-to-end, alone
✓ Fast delivery — MVP in 1–2 weeks
✓ Available remote, any timezone (Seoul-based)

Stack: 💻
NextJS · TypeScript · FastAPI · Python · PostgreSQL · Redis · Stripe · Docker · GitHub Actions · Tailwind

Steps for completing your project

After purchasing the project, send requirements so Rayan can start the project.

Delivery time starts when Rayan receives requirements from you.

Rayan works on your project following the steps below.

Revisions may occur after the delivery date.

Diagnose & Confirm Scope

I reproduce the issue, identify the root cause, and confirm what counts as “1 bug” for this project. If the scope is larger than the selected tier, I’ll propose the right option before starting.

Implement the Fix (Clean & Safe)

I apply a clean fix with minimal risk, following your codebase conventions. If needed, I’ll add small safeguards (types, error handling, basic validations) to prevent the bug from coming back.

Review the work, release payment, and leave feedback to Rayan.