You will get Fix & Optimize React/Node Web Apps – Debugging, Performance & Modernization
Rising Talent
Project details
Got a broken vibe coded web app that's causing headaches? I specialize in rescuing struggling applications built with React, Node.js, and modern web technologies. From fixing critical bugs and performance issues to modernizing legacy code, I'll transform your problematic app into a reliable, scalable solution that actually works.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$500
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 1 | 2 | Unlimited |
Number of Pages | 3 | 5 | 10 |
Design Customization | |||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Urgent
(+ 1 Day)
+$80
Additional
(+ 1 Day)
+$50Frequently asked questions
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JM
John M.
Sep 2, 2025
Contract 2 - Finishing FindMyAI
JM
John M.
Mar 20, 2025
Convert HTML, CSS, and JS to Next.js
Sagar consistently completed his work on time, demonstrating exceptional talent and delivering high-quality results.
JM
John M.
Feb 21, 2025
Frontend Development
Very skillful developer. All the millstones were completed on time and the requirements were completed as expected!
About Sagar
Full-Stack SaaS Developer | AI Integration | Next.js - Node.js
100%
Job Success
Ahmedabad, India - 6:01 pm local time
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RECENT WORK
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⭐ AIVERSE (tryaiverse) — I helped take this AI-discovery platform from concept to a live MVP as a core full-stack developer on the founding team, owning the full UI/UX and system architecture. It now serves 19,000+ users.
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PROOF YOU CAN CHECK
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✔ 100% Job Success Score
✔ 5.0 stars on every completed contract
✔ ID-verified — real production systems (one with a public URL, one serving 19K+ users)
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WHAT I DO
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- Build AI SaaS products from scratch (MVP → production)
- Add AI features & chatbots to existing products (OpenAI / Claude APIs)
- SaaS dashboards, admin panels & multi-tenant architecture
- Full-stack web apps in Next.js, React, Node.js & TypeScript
MY STACK: Next.js · React · Node.js · TypeScript · PostgreSQL · MongoDB · OpenAI & Claude APIs · REST APIs · Tailwind · Docker · AWS
I also design and build my own SaaS product MVPs, so I understand the founder's side of the table — shipping fast without leaving a mess to rewrite in six months.
If you need one developer who can own the entire build — frontend, backend, and the AI on top — let's talk.
Steps for completing your project
After purchasing the project, send requirements so Sagar can start the project.
Delivery time starts when Sagar receives requirements from you.
Sagar works on your project following the steps below.
Revisions may occur after the delivery date.
Emergency Diagnosis
Comprehensive audit to identify bugs, security vulnerabilities and bottlenecks
Priority Assessment
Rank issues by severity and plan a fix roadmap