Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get React.js Bug Fixing & Performance Optimization | React Expert

Umar F.Status: Offline
Umar F.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Umar, priced and ready to go.
Umar F.Status: Offline
Umar F.
Preview image

Let a pro handle the details

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

Project details

Is your React.js application slow, broken, or showing unexpected errors? I will identify and fix bugs, improve performance, optimize rendering, refactor inefficient code, and ensure your application is fast, stable, and production-ready. With over 8 years of experience, I deliver clean, maintainable, and scalable React solutions.
Programming Languages
JavaScript, TypeScript
What's included
Service Tiers Starter
$50
Standard
$100
Advanced
$200
Delivery Time 1 day 3 days 5 days
Number of Revisions
24Unlimited
Number of Pages
136
Design Customization
Content Upload
Responsive Design
Source Code

Frequently asked questions

Umar F.Status: Offline

About Umar

Umar F.Status: Offline
Senior React.js & Next.js Developer | TypeScript | Node.js
Multan, Pakistan - 11:44 pm local time
I’m a Senior Software Engineer specializing in building scalable, high-performance web applications using modern JavaScript technologies. I work across the full stack with Node.js, React.js, and Next.js, delivering end-to-end solutions from intuitive, pixel-perfect user interfaces to robust and secure backend systems.

I have strong experience with headless CMS architectures, including Payload CMS, enabling flexible, content-driven platforms and seamless integrations. I design and develop RESTful APIs, implement secure payment solutions, and integrate complex third-party services to streamline business operations.

I also have hands-on experience in the automotive SaaS industry, building solutions involving data integrations, payments, and operational workflows.

I focus on clean architecture, maintainable code, and performance optimization while collaborating closely with teams to deliver reliable, high-quality solutions that drive real business value.

Steps for completing your project

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

Delivery time starts when Umar receives requirements from you.

Umar works on your project following the steps below.

Revisions may occur after the delivery date.

Review the bug report and project source code.

Identify the root cause of the issue.

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