You will get expert bug fixing for your website or web application
Project details
I’m a professional Full-Stack Web Developer with over 4 years of hands-on experience in building and maintaining web applications across various stacks. What makes this project stand out is my deep technical proficiency combined with a sharp focus on bug fixing and code quality. I specialize in identifying, troubleshooting, and resolving both simple and complex bugs in front-end and back-end environments.
Whether it’s a broken layout, JavaScript error, database query issue, or API malfunction, I don’t just fix the surface problem—I investigate the root cause, explain the issue clearly, and apply clean, readable, and scalable code solutions. I work with a wide range of technologies including JavaScript, TypeScript, Node.js, MySQL, MongoDB, Express.js, Next.js, and Nest.js.
Clients appreciate my fast turnaround, strong debugging skills, and clear communication. I take pride in making your web application stable, secure, and efficient—so you can focus on your business, not your bugs. Let’s make your site error-free and high-performing!
Whether it’s a broken layout, JavaScript error, database query issue, or API malfunction, I don’t just fix the surface problem—I investigate the root cause, explain the issue clearly, and apply clean, readable, and scalable code solutions. I work with a wide range of technologies including JavaScript, TypeScript, Node.js, MySQL, MongoDB, Express.js, Next.js, and Nest.js.
Clients appreciate my fast turnaround, strong debugging skills, and clear communication. I take pride in making your web application stable, secure, and efficient—so you can focus on your business, not your bugs. Let’s make your site error-free and high-performing!
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$30
|
Standard
$50
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 7 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$20 - $60
27 reviews
(23)
(4)
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This project doesn't have any reviews.
AT
Aiden T.
Jul 16, 2026
Next.js & TypeScript One-Page Website development
Very good experience, I love working with him, communication is on top also.
HZ
H Z.
Apr 10, 2026
Web Developer (HTML, CSS, Prefreably ReactJS)
AT
Aiden T.
Mar 28, 2026
Fix Next.js + Vercel Backend Issue for Remotion Video Export
Really nice to work with, smooth communication and really good at what he does!
MI
MD Rifatul I.
Jan 16, 2026
Convert Existing Website Design to Static HTML/Bootstrap (with Animations)
He is so good in frontend. Good coomunication. I will recommend for designing new website in html css.
MG
Michelle G.
Jan 7, 2026
Urgent! Experienced Full-Stack Engineer for SAAS Project(Next.js + Supabase)
About MD Saidul
Senior Next.js & React Developer | AI Web Apps | SaaS MVP | Full-Stack
100%
Job Success
Narayanganj, Bangladesh - 4:07 am local time
With 5+ years building production-grade products using TypeScript, HTML5, Tailwind CSS, and Node.js, I've earned Top Rated status on Upwork through consistent 5-star delivery, on-time launches, and long-term client relationships.
What I Do:
🚀 SaaS MVP Development
Rapid prototyping and deployment using Next.js, TypeScript, Tailwind CSS, and Supabase — with full CI/CD pipelines on Vercel, so you can validate your idea fast.
🛒 E-commerce Development
Custom online stores and storefronts built with Next.js and headless commerce architecture — fast checkout flows, product catalogs, and payment integrations that convert.
🤖 AI-Powered Web Applications
Custom OpenAI API integrations, intelligent chat interfaces, AI-driven automation, and smart workflows built to scale with your business — practical AI use that solves real problems, not gimmicks.
🎨 Figma to Next.js Conversion
Pixel-perfect, mobile-first, responsive UI development in HTML5, TypeScript, and Tailwind CSS that matches your design system exactly — no compromises.
📈 SEO & Core Web Vitals Optimization
Server-side rendering (SSR), structured data/schema markup, and sub-second load times that put you ahead of 90% of competitors on Google.
📊 Admin Dashboards & CRM Platforms
Role-based access control, dynamic data visualization, and secure REST APIs for internal tools and client-facing platforms.
Tech Stack:
Frontend: React.js, Next.js (SSR/SSG/ISR), TypeScript, Tailwind CSS, HTML5/CSS3
Backend: Node.js, Express.js, REST APIs, JWT Authentication
Database: MySQL, Supabase, PostgreSQL, Prisma ORM
AI & Automation: OpenAI API, custom AI chatbots, AI workflow automation
E-commerce: Headless commerce, Stripe/payment gateway integration, product catalog systems
DevOps: Vercel, Netlify, GitHub Actions, CI/CD
Why Clients Choose Me:
✔️ Top Rated on Upwork — proven track record of 5-star reviews and repeat clients
✔️ 5+ years of experience in production-grade Next.js, React, and TypeScript development
✔️ SEO-first architecture — SSR from day one, built to be found
✔️ Performance-obsessed — Core Web Vitals scores in the top tier
✔️ Clean, documented, maintainable code — easy handoff, no tech debt
✔️ Clear, proactive communication — weekly updates, fast response time
📩 Have a product idea, a Figma file, an online store to build, or a slow website? Send me the details — I'll review the scope and get back to you with a clear plan.
Steps for completing your project
After purchasing the project, send requirements so MD Saidul can start the project.
Delivery time starts when MD Saidul receives requirements from you.
MD Saidul works on your project following the steps below.
Revisions may occur after the delivery date.
Receive design from client