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You will get MERN Stack Developer Expert | React.js | Node.js | Express | MongoDB

Harsh N.Status: Offline
Harsh N. Harsh N.
4.8
Top Rated
Preview image

Let a pro handle the details

Buy Other Web Programming services from Harsh, priced and ready to go.
Harsh N.Status: Offline
Harsh N. Harsh N.
4.8
Top Rated
Preview image

Let a pro handle the details

Buy Other Web Programming services from Harsh, priced and ready to go.

Project details

🚀Looking for a reliable MERN Stack Developer to build a modern, fast, and scalable web application? You're in the right place!

I specialize in developing high-performance full-stack web applications using the MERN stack—MongoDB, Express.js, React.js, and Node.js. Whether you need a custom web app, REST API, admin dashboard, authentication system, or bug fixes, I deliver clean, secure, and maintainable solutions tailored to your business needs.

Services I Offer:
✔ Custom MERN Stack Web Development
✔ Responsive & Mobile-Friendly UI
✔ REST API Development & Integration
✔ Authentication & Authorization (JWT)
✔ MongoDB Database Design
✔ Bug Fixing & Performance Optimization
✔ CRUD Applications
✔ Admin Dashboards & User Panels
✔ Deployment & Maintenance

Why choose me?
✅ Clean & Scalable Code
✅ On-Time Delivery
✅ Quality Assurance
✅ Professional Communication
✅ 100% Client Satisfaction

Let's turn your idea into a powerful web application with modern technologies.

# MERN Stack # React JS # Node JS # Express JS # Mongo DB # Web Development # Full Stack Developer # Java Script # REST API # Responsive Design
Web Programming Project
Blockchain Development, Browser Extension, API Development, API Integration, Data Dashboard
Programming Languages
PHP, HTML & CSS, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$99
Standard
$449
Advanced
$949
Delivery Time 5 days 14 days 29 days
Number of Revisions
59Unlimited
Source Code
4.8
11 reviews
91% Complete
(10)
1% Complete
(0)
9% Complete
(1)
1% Complete
(0)
1% Complete
(0)

JQ

Joe Q.
5.00
Feb 12, 2026
React and node work

TK

Tim K.
3.15
Jul 11, 2023
Front End Developer

TB

Travis B.
5.00
Apr 18, 2022
Seeking a Flutter Engineer to create Android App Widget for Home Screen

AS

Alfredo S.
5.00
Mar 1, 2022
IOS AND Android App DEveloper great work. everytime again.

JP

John P.
5.00
Oct 22, 2021
Hybrid App Development Harsh was incredibly good to work with. Very knowledgeable, on time, and just excellent work. We will definitely continue to use him in the future
Harsh N.Status: Offline

About Harsh

Harsh N.Status: Offline
API Integration Expert | System Architect | Custom API | Automation
100% Job Success
4.8  (11 reviews)
Kharar, India - 6:44 am local time
## Experts in API Integration & Integration Architecture for Business Systems

When business applications need to exchange data efficiently, a simple API connection is often not enough. We design and develop reliable, production-ready API integrations that connect ERP, CRM, eCommerce platforms, and internal business systems with a strong focus on performance, security, and long-term maintainability.

Rather than building quick fixes or temporary automation, we create integration solutions that support critical business operations and scale as your business grows.

## Our Services

🔹 API Integration & System Connectivity

Build secure and scalable integrations between ERP, CRM, eCommerce, finance, marketing, and internal systems using REST APIs, Webhooks, OAuth, and other modern integration technologies.

🔹 Integration Architecture

Design integration frameworks that include synchronization strategies, monitoring, retry mechanisms, logging, validation, and error handling to ensure reliable data exchange.

🔹 Custom Integration Platforms

Develop centralized API integration platforms using Laravel and PHP, giving your team complete control over scheduling, monitoring, logging, and integration management within your own infrastructure.

🔹 API Development & Technical Consulting

Provide end-to-end API services including REST API development, webhook implementation, OAuth authentication, system architecture, integration consulting, and technical audits.

🔹 Data Synchronization

Build dependable data synchronization pipelines between ERP, CRM, accounting, analytics, and internal applications with validation, monitoring, and automated recovery processes.

⚙️ Our Expertise

✔ API integrations for complex business workflows across finance, eCommerce, logistics, operations, and marketing

✔ Secure and scalable integration architecture with built-in logging, monitoring, retries, and alerting

✔ On-premise and cloud-based integration solutions designed for long-term reliability

✔ Complete project ownership—from architecture and development to deployment, maintenance, and ongoing support

## Technology Stack

**Languages & Frameworks:** Laravel, PHP, Node.js, Python

**Integration Technologies:** REST APIs, Webhooks, OAuth, Event-Driven Integrations

**Platforms & APIs:** HubSpot, QuickBooks Online, Xero, Shopify, Acumatica, BigCommerce, Airtable, Slack, Notion, Google Workspace

**Infrastructure:** AWS, DigitalOcean, Docker, Linux

Why Clients Work With Us

💼 Proven experience delivering enterprise-grade API integration solutions

🤝 Transparent communication, realistic timelines, and responsive support

🚀 Flexible engagement for standalone API integrations, system modernization, and long-term integration platforms

Whether you need a custom API, multi-system integration, or a complete integration architecture, we build secure, scalable, and production-ready solutions that keep your business systems connected.


**Keywords:** API Integration, API Developer, Custom API Development, REST API, REST API Integration, Third-Party API Integration, Integration Architecture, System Integration, Enterprise Integration, Backend Development, Webhook Integration, OAuth Authentication, API Automation, Workflow Automation, Data Synchronization, Real-Time Data Sync, ERP Integration, CRM Integration, eCommerce Integration, Shopify API, WooCommerce API, HubSpot API, QuickBooks API, Xero API, BigCommerce API, Airtable API, Slack API, Notion API, Google Workspace API, Laravel, PHP, Node.js, Python, MySQL, PostgreSQL, GraphQL, Docker, AWS, DigitalOcean, Linux, API Testing, API Debugging, API Consulting, Production-Ready APIs, Scalable API Solutions, Secure API Integration, Cloud Integration, On-Premise Integration, System Architecture, Monitoring, Logging, Error Handling, Retry Logic.

Steps for completing your project

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

Delivery time starts when Harsh receives requirements from you.

Harsh works on your project following the steps below.

Revisions may occur after the delivery date.

Requirement Analysis

I will understand your project requirements in detail and define the best approach for development.

UI/UX Design & Planning

I will create a structured layout and plan a user-friendly interface for better user experience.

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