Mansur Haider

mdmansur.msd@gmail.com

Profile

Application Specialist | ReactJs, NextJs, C#, NestJs, MYSQL

Hey there šŸ‘‹, I’m Mansur Haider - a Full Stack Development Expert with 12+ years of experience delivering world-class solutions.

šŸ† Upwork Success: Completed 16+ projects with 5-star ratings and 5000+ working hours. Trusted by clients worldwide for delivering excellence.

🌐 Enterprise Experience: Worked with world-leading MNCs including HCL, Tavant, ITC Infotech, Accenture, Clydsec, Verifone, Texcel, NAB, Direct Commerce, Stearns Lending delivering mission-critical solutions.

šŸ’» Technical Expertise: Deep expertise in Next.js, Nest.js, TypeScript, Node.js, React.js, Recoil, Redux, Redux Toolkit, Zustand, C#, .NET 8 and databases like MySQL, PostgreSQL, MongoDB, MS SQL, DynamoDB.

ā˜ļø Cloud & DevOps: Proficient with Azure, AWS, VPS, Docker, CI/CD pipelines, Jest, Cypress for scalable deployments.

šŸ¤– GenAI & AI-Driven Development: Expert in leveraging GPT, GitHub Copilot, Claude, Gemini, Grok to build AI-first power applications.

✨ Why Hire Me:
šŸ‘‰ I thrive in Agile environments, driving innovation and workflow improvements
šŸ‘‰ I ensure top-notch code quality following SOLID principles & Design Patterns
šŸ‘‰ Expert in modern tooling: pnpm, npm, yarn, GIT, Jenkins, Jest, Cypress
šŸ‘‰ I mentor junior developers and lead teams toward excellence
šŸ‘‰ End-to-end solution delivery from concept to production

Tech Stack

Core Experience

12+ Years100+ Projects5-Star Rated

Domains

BankingMortgageE-commerceHealthcareRetailB2C / B2B+-1 more

Languages

C#JavaScriptES6TypeScriptJAVA+-2 more

Frontend

Next.jsReact.jsTypeScriptRecoilReduxRedux Saga+5 more

Backend

Nest.jsNode.jsC#.NET 8.NET CoreASP.NET MVC+0 more

Database

MySQLPostgreSQLMongoDBMS SQLDynamoDB+-2 more

Package Managers

pnpmnpmyarn

GenAI & AI-Driven

GPTGitHub CopilotClaudeGeminiGrokAI-First Development+-1 more

+11 more categories

Projects

GiftKaro - Mobile Application
November, 2025

Developed the mobile app using React Native and NativeWind, focusing on a seamless shopping experience for users.Integrated Google and Facebook authentication for quick and secure login.Designed a visually appealing and user-friendly interface with all essential e-commerce features tailored for digital gift cards.Implemented secure payment processing using Razorpay, ensuring safe transactions for users.Managed backend services with Firebase, including real-time database updates and user data management. Integrated Utility bill payments, allowing users to conveniently pay their bills through the app and more...

GiftKaro - Mobile Application preview
1/6
React NativeNativeWindTypescriptMYSQLNestJsNextJsTailwindCSSCoolifyRedisReact QueryZod
United Royal Foundation
August, 2024

Designed and developed a full-featured charity web application with secure Razorpay payment gateway integration. Implemented 2FA authentication for admin login using NextAuth 2.0. Built an admin dashboard to track monthly donations and donor categories with interactive charts, advanced filters, and pagination. Integrated TanStack Query for scalable and real-time donation updates. Automated invoice generation with payment and 80G tax receipts. Configured email and SMS systems to deliver receipt download links directly to donors.

United Royal Foundation preview
1/3
Next.jsTypescriptTailwindCSSRazorpayMongoDBNextAuthMySQL
Vocher Vision India Services Private Limited
Feb, 2025

I developed the Vision Voucher Private Limited web application, a gifting platform, using basic HTML, CSS, and JavaScript. The application was integrated with Email.js to enable seamless email communication and improve user engagement. This project provided a simple yet effective solution, focusing on functionality, usability, and client-specific requirements.

Vocher Vision India Services Private Limited preview
1/2
JavascriptGithubHTMLCSSCloudflare
Urbanutopia Real Estate Construction Private Limited
Apr, 2025

Urbanutopia is a real estate construction company that focuses on sustainable and innovative building solutions. We aim to create eco-friendly living spaces that enhance the quality of life for our residents.

Urbanutopia Real Estate Construction Private Limited preview
1/2
React.jsNext.jsTypescriptViteTailwindCSSGithub
Sukanya Agro Farmers Producer Company Pvt Ltd
May, 2025

Sukanya Agro Farmers Producer Company Limited's mission is to empower farmers by providing them with the necessary tools and knowledge to improve their agricultural practices.

Sukanya Agro Farmers Producer Company Pvt Ltd preview
1/2
React.jsJavascriptCloudflareTailwindCSSGithub
Aamarsastho
June, 2025

Aamarsastho is a platform dedicated to selling medicines online, providing a convenient and reliable way for customers to access healthcare products. The platform focuses on user-friendly navigation and secure transactions. Partner's can get rewards for referring new partners as level up.

React.jsTypescriptGithubTailwindCSSNext.js
NAB - Financial Crime Management
2023 - December

This project is focused on financial crime management, customer identity verification, self-service, discrepancy management, document management, and customer onboarding using micro-frontend and microservice architecture. Responsibilities include designing and developing reusable code and libraries, code reviews, deployment, build issue fixes, testing, coverage reports, and automation of end-to-end testing using Cypress, and providing stakeholder presentations.

React JSRecoilReact QueryCypressJest
Direct Commerce
2022

Designed and developed a complete application from scratch using React and Web API, migrating an existing VB system used by more than 70 customers. Worked on analysing requirements, documentation, supporting users, issue resolution, and managing project tasks through JIRA.

React JSReduxSaga.NET CoreC#HTMLCSSWeb API
Stearns Lending (Customer & Loan Officer)
2021

Designed and developed front-end applications with mobile-friendly web components. Built reusable code libraries, analysed requirements, collaborated with cross-functional teams, and worked on JIRA-based task tracking, documentation, and enhancements.

React JS.NET 4.5C#HTMLCSSJavaScriptAngularWeb APIJSON
FinShip - Eagle Home Mortgage
2020

A mortgage document processing automation system. Responsible for development, unit testing, technical feasibility validation, collaboration with teams, and supporting documentation.

C#AngularMaterial UIMS SQLWeb APIXMLJSON
VHQ - Terminal Management Software
2019

VHQ is used for managing card payment terminals, tracking device status, updating device software, and running diagnostics. Worked on development, testing, requirement analysis, Git-based versioning, and JIRA-based task tracking.

.NET 4.5C#Angular JSMS SQLWeb APIXMLJSON
HRMS
2018

Human Resource Management System built to streamline employee operations and internal workflow automation.

React JSHTMLCSSJavaScript