๐๏ธ$300K+ Total Earnings |๐๏ธ๐ง๐ผ๐ฝ ๐ฅ๐ฎ๐๐ฒ๐ฑ ๐ฃ๐น๐๐ Freelancer | ๐ญ๐ฌ๐ฌ% ๐๐ผ๐ฏ Success | Certified Developer with ๐ด+ ๐ฌ๐ฒ๐ฎ๐ฟ๐ of Experience ๐๏ธ | ๐ญ๐ฌ๐ฌ% Customer Satisfaction ๐ | B.tech In Computer Science ๐จโ๐ | Upwork Certified
๐ฉ ๐๐ฒ๐โ๐ ๐ฏ๐๐ถ๐น๐ฑ ๐๐ผ๐๐ฟ ๐ป๐ฒ๐ ๐ ๐ต๐ถ๐ด๐ต-๐ฝ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ ๐๐ฒ๐ฏ ๐ผ๐ฟ ๐บ๐ผ๐ฏ๐ถ๐น๐ฒ ๐ฎ๐ฝ๐ฝ โ ๐บ๐ฒ๐๐๐ฎ๐ด๐ฒ ๐บ๐ฒ ๐๐ผ ๐ด๐ฒ๐ ๐๐๐ฎ๐ฟ๐๐ฒ๐ฑ ๐๐ผ๐ฑ๐ฎ๐.
๐น Availability: Full-time (๐ฐ๐ฌโ๐ฑ๐ฌ ๐ต๐ฟ๐/๐๐ฒ๐ฒ๐ธ) | Open to long-term, SaaS, and enterprise-grade projects
๐น Trusted Full Stack Developer with 8+ years of experience delivering scalable and modern solutions.
๐ด I am in the ๐ง๐ผ๐ฝ ๐ญ% overall on Upwork.
๐ด I am in the ๐ง๐ผ๐ฝ ๐ฎ% overall on StackOverflow.
I am Arun Kumar, a Top Rated Plus Full Stack Developer with 8+ years of experience in building high-performance web and mobile applications. I specialize in React, Next.js, Node.js, React Native, and integrating AI/ML. I leverage advanced tools like v0.dev, Cursor, GitHub Copilot, Devin AI, and others to supercharge productivity, automate workflows, and boost code quality.
๐ป ๐๐ฏ๐ผ๐๐ ๐ ๐ ๐ง๐ฒ๐ฐ๐ต ๐๐๐ฎ๐ฐ๐ธ -
โ Client Side:
React Js, Next Js, Typescript, MUI Components, Ant design Components, React Native, jQuery, Bootstrap, tailwind css, HTML5/CSS3, UI/UX, Media Queries, Sass, Wordpress , Gsap, Three js
โ Backend:
๐นNode Js, Next Js, Web API, JWT, OAuth, GraphQL
โ Mobile App:
๐นReact-Native, iOS, Android
โ DevOps/Cloud/Microservices:
๐นDocker , Kubernetes, AWS (EC2, EKS, ECS, VPC, S3, API Gateway, Lambda)
๐นGit Actions , Jenkins, CI / CD , Serverless, Terraform, API Gateway, Load Balancers
โ Data Stack:
๐นAWS Dynamo DB, SQL Server, PostgreSQL, My SQL, MongoDB, Firebase, Supabase
โ Software Engineering:
๐นAgile Methodologies (Scrum)
๐นProject Management: JIRA
๐นVersion Control: GitHub
๐นCollaboration and Workflow optimisation
โ ๐๐ป๐๐ฒ๐ด๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐:
๐นOAuth Providers: OAuth, Auth0
๐นSocial Media APIs: Facebook API, Google API, Instagram API, Youtube API, Tiktok API
๐นPayment Gateways: Paypal API, Stripe API
๐นCommunication: SendGrid, Sockets.io, OpenTok (video calling)
๐นOther APIs: Krogger API, WeChat
๐นData Visualization: High Charts, jQuery Data tables
๐ช๐๐ฌ ๐๐๐ฅ๐ ๐ ๐?
โ 100% Job Success rate.
โ Diverse Portfolio: E-commerce, Business Websites, Custom Solutions, Scalable APIs - I've done it all.
โ 90+ Clients Across Various Platforms.
โ 8+ years of experience.
โ Committed to long-term success and crystal-clear communication.
๐๐ฎ๐ป๐ด๐๐ฎ๐ด๐ฒ๐:
๐นPython, ๐น JavaScript
๐ ๐๐ฃ๐ ๐๐ป๐๐ฒ๐ด๐ฟ๐ฎ๐๐ถ๐ผ๐ป ๐๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ
๐นOpenAI API, Binance API, Telegram API, Stripe API, BetFair, OddsJam, etc.
๐น Microservices Architecture, Secure Endpoints, Token Management.
๐ ๏ธ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐ถ๐ป๐ด ๐ฆ๐ธ๐ถ๐น๐น๐:
๐น Performance Improvements (SQL + Code)
๐นDatabase Design (SQL, MySQL, Postgres)
๐นJWT Authentication
๐น API Documentation
๐นMiddleware
It would definitely be a good long term & profitable partnership for both of us, Let's connect to discuss how I can help you achieve your goals!
Thanks
Arun Kumar
=======================================================================
๐๐ฒ๐๐๐ผ๐ฟ๐ฑ๐ ๐๐ผ ๐๐ถ๐ป๐ฑ ๐บ๐ฒ ๐ผ๐ป ๐จ๐ฝ๐๐ผ๐ฟ๐ธ:
Redux, Firebase, React, Next.js, TypeScript, TailwindCSS, Storybook, Atomic Design, Formik, MUI, Html, CSS, Javascript, Tailwind CSS, RESTful API, Migration, Landing Pages, WP Blocks, Elementor, Redux Framework, WooCommerce, Woocommerce Stripe Payments Gateway, Smooth Scrollbar JavaScript Plugin, Three.js custom carousel, marquee animating, No Code, Webpack, npm, yarn, API, WordPress Website Development, Bug Fixing, Quick Fixes, PSD to HTML, Figma to HTML, Landing Page Development, E-commerce Development, Woocommerce Development, Page Speed Optimisation
React
Redux
MySQL
HTML5
CSS 3
JavaScript
Tailwind CSS
Vue.js
Vuetify
Nuxt.js
Next.js
Node.js
ExpressJS
React Native
AI Development
Abhishek S.
Yamuna Nagar, India
$13/hr
5.0
104 jobs
If you're looking for a developer who can build custom PHP applications, extend WordPress, customize WooCommerce, connect Zoho CRM, and integrate third-party platforms through secure APIs, you've found the right developer.
I specialize in โ Custom PHP Development โ, โ Web Application Development โ, โ API Integration โ, โ WordPress Plugin Development โ, โ WooCommerce Development โ, and โ Zoho CRM Integration โ.
For more than 10 years, I've helped startups, agencies, and growing businesses automate workflows, eliminate manual processes, and connect business systems by developing Custom PHP Applications, REST APIs, WordPress Plugins, WooCommerce Extensions, Zoho CRM Automations, and Third-Party API Integrations.
Rather than installing multiple plugins, I build clean, scalable, and maintainable backend solutions designed specifically for your business.
โญ Core Expertise
โ โ Custom PHP Development โ
โ โ Web Application Development โ
โ โ API Integration โ
โ โ REST API Development โ
โ โ Third-Party API Integration โ
โ โ WordPress Development โ
โ โ WordPress Plugin Development โ
โ โ WooCommerce Development โ
โ โ WooCommerce Checkout Customization โ
โ โ Zoho CRM Development โ
โ โ Zoho CRM API Integration โ
โ โ Zoho CRM Workflow Automation โ
โ โ Zoho Flow Integration โ
โ โ Payment Gateway Integration โ
โ โ Webhook Development โ
โ โ Business Process Automation โ
โ โ Custom Backend Development โ
โก Technology Stack
PHP
Web Application Development
API Integration
REST API
WordPress
WordPress Plugin Development
WooCommerce
Zoho CRM
Zoho API
Webhook Integration
JavaScript โข AJAX โข jQuery โข MySQL โข HTML5 โข CSS3 โข Bootstrap โข Laravel โข Git โข Linux โข Apache โข NGINX
๐ What I Build
โ Custom PHP Web Applications
โ Custom WordPress Plugins
โ WooCommerce Extensions
โ WooCommerce Checkout Customization
โ REST API Development
โ Third-Party API Integrations
โ Zoho CRM Integrations
โ Zoho CRM Workflow Automation
โ Zoho Flow Automation
โ Zoho Creator Integration
โ Payment Gateway Integration
โ Webhook Automation
โ CRM Integration
โ Marketing Automation
โ Inventory & ERP Integration
โ Shipping API Integration
โ Business Workflow Automation
๐ Recent Projects
โ Zoho CRM + WooCommerce API Integration
โ Zoho CRM Workflow Automation
โ Zoho Flow SMS Integration
โ Zoho Bigin + WhatsApp Integration
โ Zoho Forms โ FreshSales Automation
โ Custom WordPress Plugin Development
โ WooCommerce Billing API Integration
โ BigCommerce API Integration
โ Stripe Payment Gateway Development
โ Twilio SMS Integration
โ Webhook Automation Systems
โ WordPress REST API Development
โ License Plate Product Finder with API Integration
โ Custom PHP Backend Modules
โ WooCommerce Performance Optimization
โญ Why Clients Hire Me
โ Production-Ready PHP Development
โ Scalable Web Applications
โ Secure API Integration
โ WordPress Plugin Development
โ Advanced WooCommerce Customization
โ Zoho CRM Integration & Automation
โ Webhook & Third-Party Integrations
โ Clean, Maintainable Architecture
โ Long-Term Technical Support
API Development
API Integration
Plugin Development
WordPress
WooCommerce
Laravel
LMS Plugin
REST API
Payment Plugin
Shipping Plugin
PHP
LearnDash
Zoho CRM
Zoho Creator
Zoho Platform
Payment Gateway
2Checkout
HighLevel
Ecommerce Development Consultation
WordPress Plugin
Mehta S.
Pune, India
$11/hr
4.5
18 jobs
Overview:
โ 10+ Completed Projects | ๐ฐ $2K+ Earned
โ Python Backend Developer | Django | FastAPI | Flask | Docker | AWS | Kubernetes
Iโm a Python Backend Developer with 4+ years of experience building scalable, secure, and production-ready backend systems for startups and businesses.
I specialize in developing high-performance REST APIs using Django, FastAPI, and Flask, along with third-party API integrations, cloud deployment, containerization, and database optimization.
I have hands-on experience working with complete backend development workflows โ from API architecture and authentication systems to Dockerized deployment on AWS servers
Core Skills & Technologies
โ Python Development
โ Django Development
โ FastAPI Development
โ Flask Development
โ REST API Development
โ Third-Party API Integration
โ Authentication & Authorization
โ PostgreSQL / pgAdmin
โ SQLite & MySQL
โ Git & GitHub Version Control
โ Linux Server Management
โ Docker Containerization
โ Kubernetes Basics & Deployment
โ AWS Deployment (EC2, S3, IAM)
โ CI/CD Deployment Workflows
What I Can Build
โข Secure REST APIs
โข Scalable Backend Architectures
โข Authentication Systems (JWT, OAuth)
โข Cloud-Ready Web Applications
โข Dockerized Python Applications
โข Database Design & Optimization
โข API Integrations & Automation Systems
โข Backend Deployment & Server Setup
I focus on writing clean, maintainable, and scalable code with proper architecture and performance optimization. Whether you need a backend from scratch, API integration, bug fixing, deployment support, or long-term development assistance โ I can help deliver reliable solutions.
Letโs build your backend system professionally and efficiently.
Python
Django
FastAPI
API Integration
RESTful API
Docker
Linux
Kubernetes
AWS CodeDeploy
PostgreSQL
GitHub
SQL
pandas
NumPy
Web Scraping
Data Scraping
Scrapy
Ritik G.
Gopalganj, India
$11/hr
4.6
23 jobs
Welcome to my profile
Are you looking for a highly Skilled developer to Node.js , Next.js , Pine script, CRM , PHP, Laravel, API Integration, Graph API, CRM Development, Node.js, inegrate Meta APIs , Build Powerfull Laravel backend system , and Automate workflows in Zoho CRM? You are in right place . I have successfully delivered over 40+ projects on Upwork across multiple platforms like PHP, Laravel Framework, Meta API, Meta Thread API, Social Media API's, CRM Development, NetSuite CRM, Lightspeed, Shopify, Laravel, Joomla, WordPress. My deep technical knowledge and hands-on experience allow me to tackle complex challenges and deliver solutions that exceed client expectations.
Clients consistently praise my work for its quality, efficiency, and the seamless experience I provide from start to finish. My commitment to delivering exceptional results is reflected in the 40+ five-star reviews Iโve received.
My Core Services Include:
- Node.js
- Facebook Graph API
- Instagram API
- WhatsApp Business API setup & automation
- Ads insights & Campaign Automation
My Core Services Laravel & PHP Development:
- Custom Website and RESTful APIs
- Bckend architecture & database design
- Secure user managements
- Maintenance & Performance optimization
My Core Services Zoho CRM Customization
- Workflow automation & scripting
- Zoho API integartion with meta , Laravel, or third party - party tools
- Lead generation & sales pipeline automation
- Custom modules & blueprint setup
Why Choose me ?
* 7+ years experiuns in PHP/ Laravel development
* Proven track record in API integration and automation
* Strong understanding of CRM workflows and digital marketing tols
* Clear communcation and timely delivery
Laravel PHP#Laravel PHP#Laravel PHP#Laravel PHP#Laravel PHP#Laravel PHP
Metal API
Facebook Graph API
Meta Threads
CRM Development
Zoho CRM
Laravel
Next.js
Anil K.
Chandigarh, India
$15/hr
4.8
141 jobs
I help businesses integrate CRM, ERP, Accounting, and SaaS platforms using secure APIs, OAuth 2.0, Webhooks, and Workflow Automation.Specialized in QuickBooks, Xero, HubSpot, Salesforce, Pipedrive, Monday com, Zapier, Make com, and custom API integrations.
I specialize in API Integration, System Integration, Workflow Automation, and Business Process Automation, connecting CRM platforms, accounting software, ERP systems, marketing tools, and custom applications through secure, scalable integrations.
Over the years, I've delivered integrations for startups, SaaS companies, agencies, healthcare organizations, accounting firms, logistics businesses, and enterprise clients using REST APIs, OAuth 2.0, Webhooks, and custom backend development.
Whether you need to synchronize customer data, automate business workflows, migrate legacy integrations, or build a custom API solution, I focus on reliability, security, and long-term maintainability.
โญ Core Expertise
API Integration
REST API โข GraphQL โข SOAP API โข Webhooks โข OAuth 2.0 โข OAuth Authentication โข JSON โข XML โข API Development โข API Testing โข API Troubleshooting โข Postman
CRM Integration
HubSpot โข Salesforce CRM โข Pipedrive โข Monday com โข ActiveCampaign โข Mautic โข Ontraport
Accounting & ERP Integration
QuickBooks Online (QBO) โข Xero โข MYOB โข Moneybird โข MarginEdge โข Financial Data Synchronization
Workflow Automation
Zapier โข Make com (Integromat) โข n8n โข Workflow Automation โข Business Process Automation โข Data Synchronization
Backend Development
PHP โข Laravel โข Node.js โข Next.js โข Supabase โข Express.js
Databases
MySQL โข PostgreSQL โข SQL Server โข Supabase Database
๐ Services
โ Third-Party API Integration
โ Custom API Development
โ CRM Integration
โ ERP Integration
โ Accounting Software Integration
โ OAuth 2.0 Authentication
โ Webhook Development
โ API Migration
โ Legacy API Modernization
โ Data Mapping
โ Data Synchronization
โ Database Integration
โ Zapier Automation
โ Make com Automation
โ Workflow Automation
โ API Debugging & Maintenance
๐ผ Platforms I've Integrated
CRM Platforms
HubSpot โข Salesforce โข Pipedrive โข Monday com โข ActiveCampaign โข Mautic
Accounting Platforms
QuickBooks Online โข Xero โข MYOB โข Moneybird โข MarginEdge
Business Applications
Calendly โข Slack โข Mailgun โข TinCheck โข JobAdder โข TrackDrive
๐ Integration Experience
โ HubSpot โ QuickBooks Online
โ HubSpot โ SQL Server
โ Salesforce โ Aircall
โ Xero โ MYOB
โ Xero โ Monday com
โ Pipedrive โ Moneybird
โ CRM โ Practice Management Software
โ CRM โ Accounting Software
โ SQL Database โ QuickBooks
โ OAuth 1.0a โ OAuth 2.0 Migration
โ Third-Party API Development
โ Custom REST API Integration
โ Webhook Development
โ API Performance Optimization
โ Data Migration & Synchronization
๐ก Why Clients Work With Me
โ Business-first approach to integrations
โ Secure OAuth 2.0 implementation
โ Reliable real-time and scheduled data synchronization
โ Scalable architecture for long-term growth
โ Clear communication and documentation
โ Clean, maintainable code
โ Strong debugging and problem-solving skills
โ Long-term support after delivery
โ๏ธ Technology Stack
API Integration โข REST API โข GraphQL โข SOAP API โข OAuth 2.0 โข Webhooks โข Postman โข PHP โข Laravel โข Node.js โข Next.js โข Supabase โข SQL Server โข MySQL โข PostgreSQL โข Git โข Docker โข HubSpot Expert โข HubSpot CRM Setup โข HubSpot CRM Management โข HubSpot Sales Hub โข HubSpot Marketing Hub โข HubSpot Workflow Automation โข HubSpot CRM Migration โข HubSpot Lead Generation โข HubSpot Email Marketing
API Development
API Integration
Xero
Salesforce
Twilio API
QuickBooks Online API
HubSpot
Pipedrive
Aircall
PHP
Google APIs
RESTful API
OAuth
OpenAI API
CRM Automation
Zapier
SaaS Development
JavaScript
n8n
CRM Development
Rajneesh K.
Chandigarh, India
$22/hr
4.8
414 jobs
๐ Scalable Booking Systems, Payment Solutions & API-Driven Workflows for Modern Businesses
Hi, Iโm Rajneesh โ a Top-Rated Full-Stack Developer with 12+ years of experience and a 100% Job Success Score on Upwork.
I help rental operators, SaaS founders, and service-based businesses streamline bookings, automate workflows, and integrate powerful APIs using WordPress, WooCommerce, and custom tech stacks.
๐ง What I Deliver:
โ Custom Booking & Rental Platforms
Dynamic booking websites for hotels, rentals, experiences, and services
OTA calendar sync (Airbnb, VRBO, Booking.com), real-time availability, multi-vendor setups
Guest automation: emails, invoices, upsells, service add-ons, and more
โ WooCommerce + Stripe Expertise
Custom WooCommerce flows with Stripe, PayPal, and Razorpay integrations
Secure checkout pages, payment subscriptions, and instant webhooks
Multi-currency support, add-on plugins, and mobile-friendly UX
โ SaaS App Development
Member dashboards, subscription systems, tiered access, and analytics
REST API integrations (PMS, CRM, payment, communication)
Built with scalability and monetization in mind
โ WordPress as a Scalable Platform
Custom plugins and themes tailored to business needs
Advanced admin dashboards, booking management, and reporting
Lightweight, fast, and secure solutions โ no bloated code
โ API Integrations that Work
Stripe, Twilio, SendGrid, Zoho, Pipedrive, Google APIs
Real-time syncing between platforms
Booking engines, CRMs, and third-party vendor systems
๐ก Why Clients Keep Coming Back:
I build clean, modular, scalable systems โ not just quick fixes
I focus on business outcomes, not just code
I stay communicative, accountable, and solution-oriented
I offer hands-on post-launch support, updates, and iterations
Whether you're launching a new rental site, integrating Stripe into your platform, or building a full SaaS app โ Iโll help you get it done right.
๐ฉ Letโs talk if you need someone who gets both the tech and the business side.
โ Rajneesh
API Development
PHP
Laravel
API Integration
MySQL Programming
Stripe
Shopify
Shopify Apps
Marketing API Integration
WordPress
ChatGPT
WordPress Development
WordPress Customization
Shopify Theme
PayPal Integration
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