You will get fix bug errors in MERN MongoDB Express React Next Node JS Firebase Auth JWT
Project details
Is your React, Next.js, Node.js, or Express.js Web Application experiencing bugs, errors or issues? Look no further! I specialize in fixing, optimizing your web applications to ensure they run smoothly. With extensive experience in:
JWT
Firebase
Firestore
Authentication
Database Management
API Development
API Integration
I tackle any challenges head-on, from authentication errors and database connection issues to complex API integration problems. My expertise also includes handling real-time data with Firebase, ensuring secure data transactions, and providing seamless user experiences. Whether you're dealing with performance bottlenecks, security vulnerabilities, or deployment issues, I have the skills to troubleshoot and resolve them quickly.
Additionally, I offer services in:
Full-stack development
Backend development
Frontend development
Server-side applications
Database optimization
Enhance your application's performance and reliability with professional bug-fixing services. By leveraging the latest technologies and best practices, I ensure your application is robust, secure, and ready to scale. Trust in my expertise to deliver high-quality, maintainable solutions tailor
JWT
Firebase
Firestore
Authentication
Database Management
API Development
API Integration
I tackle any challenges head-on, from authentication errors and database connection issues to complex API integration problems. My expertise also includes handling real-time data with Firebase, ensuring secure data transactions, and providing seamless user experiences. Whether you're dealing with performance bottlenecks, security vulnerabilities, or deployment issues, I have the skills to troubleshoot and resolve them quickly.
Additionally, I offer services in:
Full-stack development
Backend development
Frontend development
Server-side applications
Database optimization
Enhance your application's performance and reliability with professional bug-fixing services. By leveraging the latest technologies and best practices, I ensure your application is robust, secure, and ready to scale. Trust in my expertise to deliver high-quality, maintainable solutions tailor
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
PSD to HTML, Security, DesignWhat's included
| Service Tiers |
Starter
$40
|
Standard
$75
|
Advanced
$100
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 2 days |
Number of Revisions | 3 | 5 | 6 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $20
Additional Revision
+$10
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TM
Travis M.
Mar 23, 2026
Senior Software Engineer (Python & SQL Server) – Data Processing & Automated Reporting System
Mukhtar did an excellent job on the project. He was very professional, responsive, and delivered the work exactly as required. His technical skills and attention to detail were impressive, and he made sure everything was working smoothly before completion. Communication was clear throughout the project, and he was always willing to help and make adjustments when needed. I would definitely recommend him and look forward to working with him again in the future.
SA
Serdar A.
Aug 21, 2025
reCAPTCHA v3 Bypass – Python + Playwright Expert Needed
He has clear experience with playwright
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Joshua David R.
Aug 21, 2025
Full Stack Developer (TypeScritpt, tRPC, NodeJS, PostgreSQL)
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Jon G.
May 17, 2025
Scrape 1000 Blog Posts into a CSV File - Complete ASAP under 2hrs
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Joshua David R.
Aug 28, 2024
Fullstack Developer: React & Typescript
Good developer and very committed
About Mukhtar
Full Stack Web Developer Data Engineer, Crawler Scraper, AI Automation
100%
Job Success
Lahore, Pakistan - 12:47 am local time
I specialize in end-to-end development and data extraction solutions using modern technologies tailored to your business needs. Whether it's building a custom WordPress site, a React frontend, or extracting structured data from dynamic websites, I provide reliable and scalable services with clean, maintainable code.
Services Offered:
Web Scraping & Data Mining
Automated data extraction from websites (static & dynamic)
Scraping real estate, e-commerce, job boards, directories, social media
Bypass anti-bot systems (Cloudflare, CAPTCHA, User-Agent rotation, Proxy rotation)
Deliver structured data (CSV, Excel, JSON, SQL, MongoDB)
Schedule scraping tasks with CRON or Node-based schedulers
Headless browser scraping using Puppeteer, Playwright, or Selenium
Web Crawlers & Automation
Build custom web crawlers to navigate multi-layered websites
Automate form submissions, logins, and user flows
API integrations for data fetching & manipulation
Browser automation for testing or repetitive tasks
Full Stack Development
React.js, Next.js for frontend UI/UX
Node.js, Express.js for backend REST APIs
MongoDB, PostgreSQL, MySQL databases
JWT & OAuth-based secure authentication
Deployments with Docker, PM2, NGINX, DigitalOcean, or AWS
WordPress Development
Custom WordPress themes and plugins
Speed optimization, SEO, and security enhancement
WooCommerce integrations
Data scraping tools integrated within WP dashboards
Migrate, clone, or redesign existing websites
Tech Stack & Tools:
Frontend: React, Next js, Tailwind CSS, Bootstrap, Material UI, Chakra UI, Daisy UI
Backend: Node.js, Express.js, Php, Python, django
Antidetect Browsers: MultiLogin, GoLogin, AdsPower, Incogniton, Dolphin{anty}, Kameleo, SessionBox
Scraping: Puppeteer, Cheerio, Playwright, Selenium, Axios, Requests
Databases: MongoDB, MySQL, Firebase, PostgreSQL
CMS: WordPress, WooCommerce
DevOps: Docker, Git, NGINX, Linux, PM2
Others: CRON jobs, RESTful APIs, JWT Auth, Regex, Proxy Rotators, Captcha Solvers
Why Choose Me?
Clean, maintainable, and optimized code
Quick turnarounds & scalable architecture
Custom solutions for both small & enterprise-level projects
100% data accuracy with compliance to legal guidelines
Friendly communication and transparent workflow
Use Cases I Cover:
E-commerce product scraping from Amazon, eBay, Walmart, etc.
Job board data extraction (Indeed, LinkedIn, etc.)
Real estate data mining (Zillow, Realtor, etc.)
Price comparison and market research tools
Lead generation and contact scraping
Custom WordPress dashboards for scraped content
Automation of data collection and reporting tasks
Let’s discuss your project and get it built exactly the way you need.
Message me to get started!
Steps for completing your project
After purchasing the project, send requirements so Mukhtar can start the project.
Delivery time starts when Mukhtar receives requirements from you.
Mukhtar works on your project following the steps below.
Revisions may occur after the delivery date.
step1
Send me clear requirements