You will get API Integration Developer | REST APIs | Webhooks | OAuth | JSON
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Project details
🚀 Looking for a professional API Integration Developer to connect your application with powerful third-party services?
I specialize in API integration using REST APIs, Webhooks, OAuth authentication, and JSON to enable secure and seamless communication between systems and external platforms. Whether it's payment gateways, third-party services, or custom APIs, I deliver scalable and efficient integration solutions tailored to your business needs.
✨ What I Offer:
• REST API integration with third-party services
• Secure OAuth authentication setup
• Webhooks configuration for real-time data updates
• JSON data parsing and management
• API development and integration for web applications
I build secure and reliable API connections for smooth data exchange, automation, and improved system performance, helping businesses streamline workflows across platforms.
💼 I provide API integration, fixes, and system connectivity with clean code, proper documentation, and quality results.
# API Integration # REST API # Webhooks # OAuth # JSON # Third Party Integration # Backend Development # Web Application Development # API Integration # REST API # Webhooks # OAuth # JSON
I specialize in API integration using REST APIs, Webhooks, OAuth authentication, and JSON to enable secure and seamless communication between systems and external platforms. Whether it's payment gateways, third-party services, or custom APIs, I deliver scalable and efficient integration solutions tailored to your business needs.
✨ What I Offer:
• REST API integration with third-party services
• Secure OAuth authentication setup
• Webhooks configuration for real-time data updates
• JSON data parsing and management
• API development and integration for web applications
I build secure and reliable API connections for smooth data exchange, automation, and improved system performance, helping businesses streamline workflows across platforms.
💼 I provide API integration, fixes, and system connectivity with clean code, proper documentation, and quality results.
# API Integration # REST API # Webhooks # OAuth # JSON # Third Party Integration # Backend Development # Web Application Development # API Integration # REST API # Webhooks # OAuth # JSON
Programming Languages
PHP, HTML & CSS, PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$99
|
Standard
$199
|
Advanced
$299
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 29 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 4 | 10 | 25 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
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JQ
Joe Q.
Feb 12, 2026
React and node work
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Tim K.
Jul 11, 2023
Front End Developer
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Travis B.
Apr 18, 2022
Seeking a Flutter Engineer to create Android App Widget for Home Screen
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Alfredo S.
Mar 1, 2022
IOS AND Android App DEveloper
great work. everytime again.
JP
John P.
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
About Harsh
API Integration Expert | System Architect | Custom API | Automation
100%
Job Success
Kharar, India - 3:19 pm local time
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, including the APIs you want to integrate, data flow, authentication methods (OAuth/API keys), and expected functionality to ensure a clear development plan.
API Research & Setup
I will analyze the required third-party APIs, review their documentation, and set up authentication (OAuth, tokens, or keys) to establish secure and reliable connections.