Senior .NET Full-Stack Developer with 8+ years of experience building SaaS platforms, ERP systems, REST APIs, AI-powered applications, and enterprise software used by thousands of users. I help businesses launch scalable, secure, and cloud-ready solutions using ASP.NET Core, C#, Azure, React, Angular, and modern AI technologies.
My expertise spans ASP.NET Core, .NET 8/9, C#, microservices, cloud infrastructure, enterprise integrations, and modern frontend frameworks including React, Angular, Blazor, and Next.js. I have successfully delivered scalable applications ranging from fintech and logistics platforms to healthcare, eCommerce, AI-powered SaaS products, and enterprise workflow systems.
In addition to backend and frontend engineering, I have strong experience integrating AI-powered solutions into enterprise applications, including intelligent chatbots, recommendation engines, predictive analytics, workflow automation, computer vision, and AI-assisted decision systems. I have worked with AI integrations, automation frameworks, and cloud AI services to improve operational efficiency and user engagement.
Languages
C#, ASP.NET Core, .NET Framework, .NET 8/9, TypeScript, JavaScript (ES6+), SQL, T-SQL, Python, HTML5, CSS3, Dart, JSON
Frontend Technologies
React.js, Next.js, Angular, Blazor, Razor Pages, MVC, Bootstrap, Tailwind CSS, Material UI, Shadcn/UI, jQuery
Backend & Frameworks
ASP.NET Core MVC, ASP.NET Web API, Entity Framework Core, LINQ, SignalR, MediatR, Dapper, Minimal APIs, gRPC, MassTransit, RabbitMQ, Hangfire, Quartz.NET, Node.js, Express.js, NestJS
Cloud, DevOps & Infrastructure
Microsoft Azure, Azure DevOps, AWS Services, Docker, Kubernetes, GitHub Actions, Firebase, Cloud Functions, IIS, Nginx, CDN & Security Platforms
Databases & Storage
Microsoft SQL Server, PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, SQLite, Firebase Firestore, Elasticsearch, Cloud Storage Solutions
Integrations & APIs
Payment Gateways, Logistics APIs, Shipping Integrations, GPS & Fleet Tracking Systems, ERP/CRM Integrations, Marketplace APIs, Communication Platforms, AI Services, Authentication Providers, Real-time Notification Systems
Tools & Platforms
Visual Studio, VS Code, Git, GitHub, Bitbucket, Jira, Postman, Swagger/OpenAPI, Docker Desktop, Azure Portal, Firebase Console
Architecture & Methodologies
Microservices Architecture, Clean Architecture, Domain-Driven Design (DDD), CQRS, Event-Driven Architecture, SOLID Principles, MVC, MVVM, Agile, Scrum, Kanban
Core Expertise
• Enterprise SaaS Platforms
• Fintech & Payment Applications
• Logistics & Transportation Management Systems
• Fleet Management & Real-time Tracking
• eCommerce & Marketplace Solutions
• Healthcare & Telemedicine Platforms
• AI-Powered Applications
• CRM / ERP Systems
• Booking & On-demand Platforms
• IoT & Device Integrations
• Warehouse & Inventory Management
• Multi-tenant Applications
• Secure API Development
• Cloud-native Applications
• Real-time Applications & Notifications
AI development:
• OpenAI API
• GPT-4o
• RAG
• Vector Databases
• AI Agents
• LangChain
• MCP
• Cursor AI
• Workflow Automation
• AI Chatbots
ASP.NET Web API
TypeScript
AngularJS
Nuxt.js
ASP.NET Core
Node.js
Angular
ASP.NET MVC
React
Entity Framework
MongoDB
Microsoft Azure
Selenium
Blazor
MVC Framework
Umbraco
Ravi F.
Morbi, India
$15/hr
4.9
46 jobs
Hi, I'm Ravi Fefar, a WordPress and Laravel developer with 6+ years of experience building, maintaining, and improving websites and web applications.
Over the years, I've worked with businesses of all sizes, helping them fix critical issues, improve website performance, develop custom features, and create solutions that support their day-to-day operations. Whether it's troubleshooting a WordPress error, optimizing a slow website, or developing a custom Laravel application, I focus on delivering reliable results and clean, maintainable code.
My expertise includes:
• WordPress Development
* Custom theme and plugin development
* Website maintenance and support
* Performance optimization
* ACF, WPML, Divi, Contact Form 7, Yoast SEO
* Bug fixing and troubleshooting
• Laravel & PHP Development
* Custom web applications
* REST API development and integration
* Laravel upgrades and migrations
* Database design and optimization
* Ongoing maintenance and support
• Frontend Development
* Responsive websites using Bootstrap
* AJAX-based functionality
* Mobile-friendly and user-focused interfaces
What clients appreciate most about working with me is my ability to quickly understand problems, communicate clearly, and deliver solutions that work. I take ownership of every project and aim to build long-term relationships based on trust, quality, and reliability.
If you're looking for a developer who can solve problems efficiently and help your website or application run smoothly, I'd be happy to discuss your project.
Let's connect.
AJAX
PHP
WordPress Plugin
Laravel
jQuery
Ecommerce Website
CSS 3
WordPress
HTML5
WordPress Theme
API Integration
CodeIgniter
cPanel
PayPal Integration
Front-End Development
Anil N.
Dehradun, India
$8/hr
5.0
30 jobs
I am an experienced Full-Stack PHP Developer with over 15 years in web development, specializing in PHP, MySQL, JavaScript, OOJS, jQuery, Git, and WordPress. I have extensive experience in developing and maintaining small to mid-sized web applications, as well as troubleshooting and customizing existing solutions. My passion lies in problem-solving, debugging, and delivering high-quality, scalable solutions in both JavaScript and PHP.
I hold a science degree along with a three-year diploma in software development. Over the past 8+ years, I have successfully worked as part of distributed teams across multiple locations, collaborating seamlessly in remote work environments. My professional expertise includes:
• Version Control & Collaboration: Proficient in Git (GitHub, Bitbucket) for code versioning and collaboration.
• Project Management: Experienced in Jira for agile workflow management.
• PHP Development: Skilled in PHP (5-8.3)—both core/custom development and frameworks like CakePHP, CodeIgniter, and Laravel.
• JavaScript & Frontend Development: Strong knowledge of vanilla JavaScript, jQuery, Vue.js, and React.js, with a keen interest in exploring new frameworks.
• Team Management: Experienced in leading small teams (2-5 developers), mentoring junior programmers, and ensuring project success.
I thrive in remote work environments and am confident that my technical expertise, problem-solving skills, and ability to collaborate across time zones will make me a valuable addition to your team. I would love the opportunity to discuss how I can contribute to your projects.
Working Hours / Availablity:
IST: 9:30 AM - 2:30 AM
CST: 10:00 AM - 3:00 PM
CET: 9:00 AM - 6:00 PM
For long term contracts can adjust according to requirement.
I am also available for free demo tasks, so you can verify my skills.
Best regards,
Anil Nautiyal
Web Design
Git
Database Architecture
MySQL
JavaScript
PHP
Database Maintenance
jQuery
Bootstrap
cPanel
WordPress
CSS
API
API Integration
Laravel
CodeIgniter
Vue.js
Web Hosting
Google Cloud Platform Administration
GitHub
Sudhir P.
Aurangabad, India
$20/hr
4.9
203 jobs
🌟 Professional Full-Stack Developer | PHP, WordPress, Laravel, Codeigniter (3 x, 4 x), Reactjs , React native, Vuejs, MySQL, PostgreSQL APIs Integrations, CRM, Performance Optimization. Have worked using Claude, Open AI and Lovable.app.
Get your work done 4x faster from the developer using Antigravity and Cursor - AI enabled IDEs.
Hello, and thank you for taking the time to visit my profile!
I am a Full-Stack Web Developer with 14+ years of experience delivering robust, scalable, and business-focused web solutions. I specialize in PHP/MySQL/PostgreSQL, WordPress development, complex API integrations, and custom backend systems including CRM development and feature extensions.
Over the years, I’ve successfully completed 18,000+ Upwork hours while working with 150+ satisfied clients—primarily long-term collaborations.
What I Do Best
Performance Audit, MySQL Database optimisation, Normalisation, Query Optimisation.
API Integrations & Automation
Stripe (Subscriptions, Stripe Connect)
Pay Pal integration, topup, refund, IPN and Subscriptions
WhatsApp API (WATI, Twilio)
Upwork API
Make com (Integromat) & ChatGPT API automation, OPEN AI, Claude and lovable.app.
cURL-based REST APIs
oAuth1 & oAuth2 integrations
FedEx, Dexi io, Mailchimp, SendGrid, Mailgun, SMS Gateways
💻 Full-Stack Development
PHP (OOP, Namespaces, MVC)
Laravel, CodeIgniter 3/4
JavaScript, jQuery, Ajax
Angular / Vue js
PostgreSQL, MySQL
Threejs for interactive 3D elements
🛠 WordPress Expertise
Custom theme & plugin development
Performance optimization & caching
WooCommerce customization
Creating Elementor add-ons
Schema org (JSON-LD, microdata)
Custom post types, hooks, filters, shortcodes
Experience with major themes: Sage/Roots, Divi, Genesis, X Theme, WooThemes, WPJobster, etc.
I have also built a custom WordPress performance plugin that boosts page speed regardless of the page builder used—eliminating the need for heavy caching plugins.
🗃 Specialized Skills
Image Processing (Imagick, GD2)
Dynamic PDF generation & manipulation
CSV/XML import with field mapping
Marketplace & crowdfunding systems
Web scraping
Server-side image editing
Docker, Composer, PHP Artisan
Server management (cPanel/WHM, VPS, AWS, DigitalOcean, SiteGround, WP Engine)
Postfix mail server setup
🎓 Education
Master’s in Computer Management – Dr BAMU, Aurangabad
🤝 Why Work With Me?
14+ years of professional development experience
Strong problem-solving skills and clean code practices
Experience in both small tasks and large full-scale systems
Reliable communication and long-term partnership mindset
Flexible with hourly rate for long-term engagements
I take pride in delivering high-quality, well-structured, and scalable solutions that directly support your business goals.
I uses IDEs with AI coding. Antigravity with Claude and Gemini AI models and Cursor.
If you're looking for a dependable full-stack developer who can handle complex integrations, optimize performance, and deliver results—let’s connect!
MySQL
PHP
API
WordPress
Google APIs
CodeIgniter
Stripe API
Laravel
Database Optimization
ChatGPT Prompt
Project Management
Schema Markup
JavaScript
React
Payment Gateway Integration
Stripe
3CX
Twilio
OpenAI API
Claude 3.5 Sonnet
Harwinder S.
Mohali, India
$20/hr
4.9
241 jobs
Hello Good people there,
I have completed successfully 10000 plus hours on upwork.
I am a Web Developer come Web designer with 10 years experience. I have technical expertise in developing web sites using latest technologies which includes: I
HTML5, CSS3, BootStrap, Foundation, LASS, SASS, JavaScript, jQuery, Angular JS, React Js, Node Js, AJAX, XML, JSON, C, C++, SQL, PHP/MySql, WordPress, WooCommerce, Magento, Codeigniter.
I'm very proficient in customizing and building Core PHP, Wordpress websites, Codeignitor and Magento. I am also specialize in website speed Optimization.
I have also completed Bachelor of Technology in Information technology.
Hope to work with you soon!
JavaScript
CSS
PHP
WordPress
Magento
ExpressJS
Laravel
Twilio API
Node.js
React
CodeIgniter
Python
WordPress Plugin
Plugin Customization
Lincy R.
Hyderabad, India
$30/hr
5.0
23 jobs
⭐ Expert PHP Developer
🏆 $300K+ Total Earnings
PHP Developer with extensive experience building and optimizing high-traffic web applications using PHP, JavaScript, and MySQL. Proven expertise in designing scalable backend architecture, developing robust APIs, modernizing legacy systems, and improving application performance, maintainability, and reliability.
Extensive experience delivering secure, data-driven solutions with a strong focus on PHP application development, platform optimization, and system scalability. Skilled in backend engineering, third-party API integrations, legacy code refactoring, and performance tuning across large-scale tracking, analytics, and fraud prevention platforms.
Hands-on expertise in MySQL database design and optimization, ensuring high availability, scalability, and efficient performance in demanding production environments.
I work with startups, agencies, and businesses to improve existing applications, develop custom solutions, automate workflows, and maintain mission-critical systems. Whether it’s a quick bug fix, performance optimization, or long-term development support, I focus on delivering stable, efficient, and high-quality solutions.
Core Expertise
• Custom development using Core PHP and Laravel
• Backend architecture and scalable application development
• MySQL database design, optimization, and query performance tuning
• Third-party API integrations including Bing Ads, Zeropark, and Oddbytes
• Payment gateway integrations such as Authorize.Net and other major providers
• Automation tools, cron jobs, email systems, and workflow automation
• Web scraping, RSS feeds, XML processing, and data extraction
• Legacy PHP maintenance, upgrades, and migration from PHP 5 to PHP 7/8
• Troubleshooting, debugging, and performance optimization for high-traffic applications
I am committed to writing clean, maintainable code and providing dependable long-term technical support for growing platforms and enterprise applications.
Why Clients Choose Me
20+ years of hands-on PHP development experience
Strong expertise in Core PHP & Laravel
Skilled at working with existing codebases and optimizing performance
Reliable, high-quality deliverables on time
Clear communication, professional, and responsive
AJAX
PHP
MySQL Programming
JavaScript
Core PHP
MySQL
Laravel
Custom PHP
jQuery
Bing Ads
Authorize.Net
HTML
CSS
Stripe API
LAMP Stack
Git
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