You will get Angular & React bug fix and performance optimization | Node.js, TypeScript
Project details
Angular & React Bug Fix | Node.js Debugging | Performance Optimization | JavaScript | TypeScript
Angular or React app running slow or crashing in production? I fix frontend bugs, resolve performance bottlenecks & optimize web applications fast — with production-grade code that holds up at scale.
I specialize in Angular (v12+), React, Next.js, TypeScript, Node.js, MongoDB, PostgreSQL, Stripe & PayPal. Whether it's a memory leak, broken API integration, RxJS subscription issue, slow SaaS dashboard, or a UI component that refuses to render correctly — I diagnose & fix it. A REAL FIX.
With 10+ years building SaaS platforms — including AutoLeap (5,000+ businesses, North America) and BWL League — I know what production-grade code looks like and exactly how to fix code that isn't.
Why me?
✔ Root cause diagnosis — not just patches
✔ Clean, maintainable code with explanation
✔ Fast turnaround — most fixes delivered in 1 day
✔ 100% Job Success Score — all 5-star reviews
✔ Available immediately — no waiting
If your app is broken, slow, or just not working the way it should — let's fix it.
Angular | React | ReactJS | Node.js | TypeScript | JavaScript | Bug Fix | Performance Optimization
Angular or React app running slow or crashing in production? I fix frontend bugs, resolve performance bottlenecks & optimize web applications fast — with production-grade code that holds up at scale.
I specialize in Angular (v12+), React, Next.js, TypeScript, Node.js, MongoDB, PostgreSQL, Stripe & PayPal. Whether it's a memory leak, broken API integration, RxJS subscription issue, slow SaaS dashboard, or a UI component that refuses to render correctly — I diagnose & fix it. A REAL FIX.
With 10+ years building SaaS platforms — including AutoLeap (5,000+ businesses, North America) and BWL League — I know what production-grade code looks like and exactly how to fix code that isn't.
Why me?
✔ Root cause diagnosis — not just patches
✔ Clean, maintainable code with explanation
✔ Fast turnaround — most fixes delivered in 1 day
✔ 100% Job Success Score — all 5-star reviews
✔ Available immediately — no waiting
If your app is broken, slow, or just not working the way it should — let's fix it.
Angular | React | ReactJS | Node.js | TypeScript | JavaScript | Bug Fix | Performance Optimization
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, W3C Markup Validation ServiceWhat's included
| Service Tiers |
Starter
$50
|
Standard
$120
|
Advanced
$220
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 2 | 4 | Unlimited |
Design Customization | - | - | |
Content Upload | - | - | |
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$20 - $75
Priority Delivery
+$50
Unit Test Coverage
(+ 1 Day)
+$75
Code Review & Report
(+ 1 Day)
+$75Frequently asked questions
4 reviews
(4)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
AF
Ahmed F.
May 21, 2026
Full-Stack Feature Update (React + Node.js)
Really good experience working with Mustafa once again. He handled both frontend nd backend tasks properly nd was quick to understand the existing codebase. Communication was smooth, updates were clear, nd the fixes were done faster than expected. Everything worked well after delivery. Would definitely hire again 👍
AF
Ahmed F.
May 14, 2026
Angular SaaS Dashboard Optimization & UI Enhancements
Great experience working with Mustafa. He quickly found the performance issues in our Angular dashboard nd fixed them smoothly. Communication was easy, updates were clear, nd the UI feels much faster now. Would definitely work with him again 👍
GH
George H.
May 6, 2026
Angular Dashboard Bug Fix & Performance Optimization
Great work. Fixed my app dashboard issues quickly and improved performance too. Easy to work with him and good communication as well
ES
Ellis Otto S.
Apr 23, 2026
Small website updates (WordPress/ statics site) _ quick task
Great experience working on this project. Communication was smooth and everything was well coordinated from start to finish. The work was straightforward, and the process was efficient throughout.
Looking forward to working together again 👍
Looking forward to working together again 👍
About Muhammad
Full-Stack Developer | React, Node.js, Angular | SaaS & AI Integration
100%
Job Success
Karachi, Pakistan - 11:43 am local time
I've spent 10 years fixing exactly that — including at AutoLeap, a platform serving 5,000+ real customers across North America, and BWL League, a real-time sports SaaS deployed globally.
I build full-stack web apps and AI integrations that hold up when it matters most — not just when everything is running smoothly.
I've built it all: Angular SaaS dashboards, MERN stack web apps, REST API backends, real-time features, payment integrations, admin panels, and full MVPs from scratch. I also integrate AI features using OpenAI and ChatGPT API — custom chatbots trained on your data, content generation, smart search, and workflow automation.
On the ecommerce side — Shopify store development, theme customization using Liquid, Shopify 2.0, WooCommerce, and full dropshipping store setups built to convert.
What you get when you hire me:
- Full-Stack MERN/MEAN — React, Angular, Node.js, MongoDB, PostgreSQL, TypeScript
- AI Integration — OpenAI API, ChatGPT, custom chatbots, RAG on your own data
- SaaS Platforms — dashboards, real-time features, Kanban, scheduling, auth
- Payment Integration — Stripe, PayPal, subscriptions, webhooks
- 100% Job Success — every client satisfied, every project delivered
- Clean, scalable code — not spaghetti you'll regret in 6 months
So ask yourself: do you want the cheapest developer or the right one?
Message me — tell me what you're building, and I'll confirm scope and timeline upfront. On time. On budget. No surprises. No back and forth. Clean handoff.
Angular | React | Reactjs | Node.js | OpenAI API | ChatGPT | MERN | MEAN | SaaS | MVP | Shopify | WooCommerce | Liquid | Dropshipping
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Share your issue and codebase access
Send me a clear description of the bug or performance issue, along with repo access, error logs, or screenshots. The more detail you provide, the faster I can diagnose it.
Diagnosis and scope confirmation
I review your codebase, identify the root cause, and confirm the exact fix with you before touching anything. No surprises — you approve the scope first.