You will get React, Next.js, or Node.js Bug Fix & API Integration
Top Rated
Project details
Is your React, Next.js, or Node.js project stuck with bugs or performance issues? Don’t worry I’ll get your app running flawlessly again.
I’m a Full-Stack Web Developer (MERN Stack) specializing in bug fixing, performance optimization, and API integration. I deliver clean, scalable, and maintainable code that saves time and boosts reliability.
🛠️ What I Can Fix or Improve:
🔹 Frontend: React state/logic bugs, Next.js rendering errors, UI glitches, and Tailwind CSS responsiveness.
🔹 Backend/API: Node.js or Express logic issues, MongoDB CRUD errors, and authentication/authorization bugs.
🔹 API Integration: Connect React or Next.js apps with REST APIs or third-party services (Stripe, Firebase, etc.).
🔹 Database: Schema fixes, performance tuning, and connection troubleshooting.
💡 Why Clients Choose Me:
⚡ Fast & reliable delivery for urgent issues
🔹 Deep expertise in Next.js, React, Node.js, Express & MongoDB
🧹 Clean, well-documented solutions
💬 Quick communication & professional support
Let’s make your app bug-free, optimized, and ready to scale.
📩 Message me before ordering share your issue, and I’ll deliver a precise, reliable fix.
I’m a Full-Stack Web Developer (MERN Stack) specializing in bug fixing, performance optimization, and API integration. I deliver clean, scalable, and maintainable code that saves time and boosts reliability.
🛠️ What I Can Fix or Improve:
🔹 Frontend: React state/logic bugs, Next.js rendering errors, UI glitches, and Tailwind CSS responsiveness.
🔹 Backend/API: Node.js or Express logic issues, MongoDB CRUD errors, and authentication/authorization bugs.
🔹 API Integration: Connect React or Next.js apps with REST APIs or third-party services (Stripe, Firebase, etc.).
🔹 Database: Schema fixes, performance tuning, and connection troubleshooting.
💡 Why Clients Choose Me:
⚡ Fast & reliable delivery for urgent issues
🔹 Deep expertise in Next.js, React, Node.js, Express & MongoDB
🧹 Clean, well-documented solutions
💬 Quick communication & professional support
Let’s make your app bug-free, optimized, and ready to scale.
📩 Message me before ordering share your issue, and I’ll deliver a precise, reliable fix.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$15
|
Standard
$30
|
Advanced
$40
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 1 day |
Number of Revisions | 1 | 1 | 1 |
Bug Investigation | |||
Fix Documentation | - | - | |
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$10Frequently asked questions
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OA
Osaf A.
Aug 24, 2026
Full Stack Developer to Fix AI Workflow Issues
Majid was great to work with. He understood the requirements quickly, communicated well, and delivered quality work on time. He was professional, responsive, and easy to work with. I highly recommend Majid and would definitely work with him again.
KJ
Kenny J.
Mar 8, 2026
Full Stack Web App Developer
UM
Usman M.
Oct 6, 2025
Resolve CORS Preflight Error for Image Uploads in MERN App with Firebase Storage
Great experience working with Majid. He solved the problem instantly, communicated clearly, and went above expectations. Very professional — highly recommended.
About Majid
Full Stack Web Developer | SaaS, CRM & AI-Powered Web Apps
100%
Job Success
Shekhupura, Pakistan - 11:41 am local time
I build SaaS platforms, CRM systems, AI web apps, dashboards, and custom business applications that connect your frontend, backend, database, APIs, and business logic into one reliable product.
With 3.5+ years of full-stack development experience, I’ve worked on products including:
→ FeedbackWorthy: SaaS platform for collecting, managing, and showcasing customer feedback.
→ D2Metrics: Analytics platform processing around 20,000–40,000 records daily, with interactive dashboards and automated data workflows.
→ Real Estate CRM: CRM integrated with GoHighLevel (GHL) for lead tracking, automation, and business workflows.
→ AI Agriculture Platform: AI-powered application for crop disease detection, recommendations, and agriculture services.
What I can help with:
• SaaS and custom web application development
• CRM and business workflow systems
• AI-powered web applications
• REST API development and third-party integrations
• Dashboards and data-heavy applications
• Database design and optimization
• Existing application fixes and improvements
• Deployment and production setup
Tech Stack:
Next.js, React, TypeScript, Node.js, NestJS, Laravel, MongoDB, PostgreSQL, MySQL, Tailwind CSS, REST APIs, Webhooks, OpenAI, Gemini, Docker, and Vercel.
I also use Cursor, Claude Code, and LLMs where they make sense to speed up development, debug issues, and reduce repetitive work, while keeping the final code clean, maintainable, and production-ready.
I focus on building products that are fast, maintainable, scalable, and reliable in production, not just applications that work in development.
If you have a SaaS idea, CRM, AI application, dashboard, or existing web app that needs to be built or improved, send me the details. I’ll help you figure out the right technical approach and get it built properly.
Steps for completing your project
After purchasing the project, send requirements so Majid can start the project.
Delivery time starts when Majid receives requirements from you.
Majid works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
I will review your project details, bug report, or API documentation.
Code Review & Setup
Access your codebase, set up the environment, and reproduce the issue.