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You will get Full Stack Developer | MERN Stack | React Node MongoDB Expert

Kumail M.Status: Offline
Kumail M. Kumail M.
4.5
Preview image

Let a pro handle the details

Buy Web Application Programming services from Kumail, priced and ready to go.
Kumail M.Status: Offline
Kumail M. Kumail M.
4.5
Preview image

Let a pro handle the details

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

Project details

Looking for a reliable full stack developer to build a modern and scalable web application? I specialize in MERN stack development using React JS, Node JS, Express, and MongoDB to create fast, secure, and user-friendly web solutions.

Whether you need a custom web app, API development, bug fixes, or performance optimization, I focus on clean code, smooth functionality, and efficient architecture. My goal is to deliver high-quality applications that meet your business needs and provide a seamless user experience.

I ensure clear communication, timely delivery, and ongoing support throughout the project.
Programming Languages
JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security

What's included $100

These options are included with the project scope.

$100
  • Delivery Time 2 days
  • Number of Revisions 1

Frequently asked questions

4.5
4 reviews
75% Complete
(3)
1% Complete
(0)
25% Complete
(1)
1% Complete
(0)
1% Complete
(0)

KG

Karissa G.
3.00
Jul 14, 2026
Freelance WordPress Security & HIPAA Compliance Consultant

MH

Murtaza Shabbir H.
5.00
May 6, 2026
Senior QA Automation Engineer Kumail delivered robust, scalable test automation with great attention to detail, significantly improving our product quality and release confidence

ZM

Zainab Asghar M.
5.00
Apr 9, 2026
Frontend React Developer (TypeScript) for SaaS Event Management Platform Kumail is a reliable full-stack developer who gets the job done and communicates well throughout the project.

ZM

Zainab Asghar M.
5.00
Apr 7, 2026
Cybersecurity Engineer for AI-Driven Platform Kumail was great to work with. He communicated clearly throughout the project and made sure to understand all the requirements before starting. The work was delivered on time and the quality met expectations. He was also very responsive to feedback and willing to make adjustments when needed. Overall, it was a smooth and positive experience working with Kumail, and I would definitely recommend him to others.
Kumail M.Status: Offline

About Kumail

Kumail M.Status: Offline
QA Engineer | Manual & Automation | SaaS, Web, Mobile & API Testing
67% Job Success
4.5  (4 reviews)
Dubai, United Arab Emirates - 4:25 am local time
QA Engineer | Cybersecurity Specialist | Manual QA Tester | Test Automation Engineer | Playwright Expert | Web Application Security | API Testing Specialist | VAPT | Penetration Testing | Mobile App Tester | Regression Testing | Payment Gateway Testing | FinTech QA | SaaS QA | Postman Expert | TypeScript Automation | Security Testing

I’m a QA Engineer and Cybersecurity expert with 100% Job Success Score and 15+ years of experience across SaaS and CRM platforms, mobile applications, POS systems, fintech, healthcare, and e-commerce.

I help web, mobile, and API teams find bugs, vulnerabilities, and usability issues before their users or attackers do.

My approach combines Quality Assurance with security-focused testing. I validate products against requirements, test them through real-user scenarios, and identify functional defects, security weaknesses, payment issues, API problems, and UX friction before they reach production.

On a recent mobile project, I identified 100+ bugs before release, helping the application launch with zero critical issues.

What I Work On:

✅ Manual QA & Functional Testing

I thoroughly test applications across critical user journeys, business requirements, edge cases, and real-world scenarios.

* Manual QA Testing
* Functional Testing
* Regression Testing
* Exploratory Testing
* End-to-End Testing
* Smoke & Sanity Testing
* User Acceptance Testing
* Test Case Design
* Cross-Browser Testing
* Responsive Testing

✅ Playwright Test Automation

I build maintainable automation suites that reduce repetitive manual regression work and help teams release faster.

* Playwright + TypeScript
* JavaScript Test Automation
* End-to-End Automation
* Cucumber / BDD
* Automated Regression Suites
* Cross-Browser Automation
* GitHub Actions CI/CD Integration
* Reusable Test Frameworks

✅ Cybersecurity & Application Security

Modern products need more than functional testing. I help identify security weaknesses and reduce risk across web applications, APIs, networks, and infrastructure.

* Web Application Security Testing
* OWASP Top 10 Assessment & Mitigation
* API Security Testing
* Authentication & Authorization Testing
* Vulnerability Assessment
* Penetration Testing
* Vulnerability Assessment & Penetration Testing (VAPT)
* Security Audits & Risk Analysis
* Access Control Testing
* Security Configuration Review

✅ Network & Infrastructure Security

I help assess infrastructure security and identify weaknesses that could increase exposure to cyber threats.

* Network Security Assessment
* Firewall Security Review
* IDS/IPS Review
* Network Segmentation
* Secure Configuration Review
* Endpoint Security
* Access Control
* Security Hardening
* Infrastructure Risk Assessment

✅ Threat Monitoring & Security Operations

Security requires continuous visibility, not just one-time testing.

* Log Monitoring
* Threat Detection
* Security Event Analysis
* Incident Response Support
* Risk Identification
* Security Policy Development
* Security Best Practices Implementation
* Preventive Security Recommendations

✅ API & Database Testing

I validate APIs, integrations, databases, and backend workflows from both functional and security perspectives.

* Postman API Testing
* REST API Validation
* Endpoint & Response Testing
* API Integration Testing
* Error Handling Validation
* Webhook Testing
* SQL Data Verification
* MySQL & PostgreSQL
* API Security Validation

✅ Mobile App Testing

* iOS Testing via TestFlight
* Android App Testing
* Play Store Closed Testing
* Real Device Testing
* Android Emulator Testing
* Mobile Web Testing
* Cross-Device Testing
* Responsive UI Validation

✅ SaaS, Website & E-Commerce QA

* Registration & Login
* User Onboarding
* Checkout & Shopping Cart
* SaaS Dashboards
* Admin Panels
* Role & Permission Testing
* Subscription Workflows
* CRM Workflows
* E-Commerce User Journeys

✅ UX & Usability Testing

A feature can technically work and still frustrate users. I identify friction that traditional functional testing can miss.

* First-Time User Experience
* Registration & Onboarding Friction
* Checkout & Payment Drop-Off Analysis
* Navigation & Information Clarity
* Error Messages & Empty States
* UI Consistency
* Figma Design Validation
* UX Improvement Recommendations

I don’t just check whether a feature works.

I test whether it works correctly, remains secure, handles real-world scenarios, and delivers a reliable user experience.

If you’re building a web application, mobile app, SaaS platform, API, fintech product, or e-commerce system, I can help you identify bugs, security weaknesses, and UX problems before they impact your users or your business.

Steps for completing your project

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

Delivery time starts when Kumail receives requirements from you.

Kumail works on your project following the steps below.

Revisions may occur after the delivery date.

Step 1

requirement Gathering

Step 2

start work

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