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🚀I build React and Next.js applications that load in under 2 seconds and scale to millions of users. 💼 10+ years experience | 80+ projects delivered My applications serve 600K+ monthly users with 99.9% uptime. Clients report 35% higher conversion rates and 50% faster page loads. 🧩 FRONTEND DEVELOPMENT ⚛️ React.js & Next.js Production-grade applications with SSR, SSG, ISR. TypeScript architectures scaling from MVP to enterprise. Performance optimization achieving sub-200ms TTI and Core Web Vitals 90+. 🧠 React Flow Node-based editors, workflow builders, and diagram systems. Custom nodes handling 500+ elements without performance issues. Real-time collaboration via WebSocket. 🎨 UI Engineering Pixel-perfect Figma implementations using Tailwind CSS, SCSS, Styled Components. Responsive designs across 20+ devices. Storybook documentation and WCAG 2.1 AA compliance. 🔗 GraphQL & APIs Apollo Client and React Query implementations reducing API calls by 40%. Optimized REST & GraphQL integrations with caching. 🧱 BACKEND DEVELOPMENT Symfony (PHP) Enterprise PHP applications with API Platform, Doctrine ORM, JWT authentication, and Messenger queues for background processing. 📊 RECENT OUTCOMES SaaS Dashboard: 50K+ users, 45% faster load times React Flow Builder: 100K+ daily node operations Symfony API: 2M+ monthly requests, sub-100ms response E-commerce Frontend: 32% conversion increase 🧠 MY APPROACH Architecture-first planning Strict TypeScript typing on every component Jest & React Testing Library coverage AI-accelerated development with GitHub Copilot & Cursor delivering 40% faster output without quality compromise 📢 Proactive communication with daily updates No ghosting. No missed deadlines. ⚡ Currently accepting 2-3 projects Response within 3 hours 🧰 TECHNOLOGIES React.js, Next.js, React Flow, Symfony, TypeScript, JavaScript, Tailwind CSS, SCSS, Styled Components, GraphQL, Redux, REST API, PHP, MySQL, PostgreSQL, MongoDB, Docker, Jest, Figma, AWS, Vercel, Git, WebSocket, Stripe 👉 Send project requirements with timeline and scale expectations 🔑 KEYWORDS React Developer, React.js, ReactJS, Next.js Developer, NextJS, Frontend Developer, Full Stack Developer, JavaScript, TypeScript, Node.js, PHP, Symfony Developer, Redux, GraphQL, REST API, API Development, Tailwind CSS, CSS3, HTML5, SCSS, Styled Components, React Flow, React Hooks, Responsive Design, Web Application Development, SaaS Application, Dashboard Development, Server-Side Rendering (SSR), AWS, Vercel, Docker, Git, Jest, Figma, MySQL, PostgreSQL, MongoDB, E-commerce Development, Stripe Integration, WebSocket, Performance Optimization, Core Web Vitals, Scalable Applications

🏆 Top-Rated Plus Developer on Upwork 🎯 100% Job Success Score 💻 9+ Years of Development Experience ⏲️ 8,500+ Hours Worked 💰 $200K+ Earnings on Upwork I help businesses build scalable web applications, powerful APIs, eCommerce platforms, and custom CMS solutions that are secure, high-performing, and easy to maintain. Whether you need a custom Laravel application, Symfony-based enterprise solution, Node.js backend, WooCommerce store, Shopify customization, or WordPress development, I can handle the entire development lifecycle from architecture to deployment. Backend Development Languages & Frameworks: * PHP * Laravel * Symfony * Node.js * Express.js API Development & Integrations * REST APIs * SOAP APIs * Custom API Development * Swagger / OpenAPI * Third-Party Integrations * Payment Gateway Integrations Architecture & Engineering * Microservices * Domain Driven Design (DDD) * CQRS * Test Driven Development (TDD) * Performance Optimization * Secure Application Development Databases * MySQL * PostgreSQL * MongoDB * MariaDB * SQLite * Redis Cloud & DevOps * AWS * Google Cloud Platform * DigitalOcean * Linode * Docker * CI/CD Pipelines * GitHub Actions * GitLab CI * Bitbucket Pipelines WordPress & WooCommerce * Custom Theme Development * Custom Plugin Development * WooCommerce Development & Customization * Membership & Subscription Systems * Multi-language Websites (WPML, Polylang) * Elementor * Divi * Oxygen * Avada * WPBakery Shopify * Shopify Store Development * Shopify Theme Customization * Liquid Development * Shopify App Integrations * Subscription & Membership Stores * Multi-language Stores Frontend Technologies * React.js * Next.js * Vue.js * Nuxt.js * AngularJS * TypeScript * JavaScript (ES6+) * HTML5 * CSS3 * Bootstrap * jQuery * AJAX What I Can Help You With ✓ Custom Web Applications ✓ SaaS Platforms ✓ Enterprise Backends ✓ API Development & Integrations ✓ WordPress & WooCommerce Solutions ✓ Shopify Stores & Customizations ✓ Database Design & Optimization ✓ Performance & Security Improvements ✓ Cloud Deployment & DevOps Setup I focus on writing clean, maintainable code and delivering solutions that support long-term business growth. If you're looking for a reliable developer who understands both technology and business requirements, I'd be happy to discuss your project.

🔥8+ years of Experience . 🔥 100% Job Success Rate 🔥 I have worked in enterprise cloud solutions which had 5000+ tables, 500GB+ database, 1 MILLION active users. I know optimization techniques like static caching, in-memory caching, indexing, sharding, load balancing, reverse proxy. I do realize the importance of Design Patterns and Software Practices and I follow DRY, KISS in my code. 🔥 I am a highly motivated full stack developer and I have been working in the field of development for 10+ years, with creative and unique ideas to produce high quality productive results for my clients worldwide. 🔥 You can see that I have completed several long-term projects on Upwork and got 5-star reviews - all of my clients were highly satisfied with the job I've performed. I'm skilled in the following technologies: ✅ PHP (Symfony 2.*, 3.*, 4*, 5.*, 6.*) ✅ Laravel 5,6,7,8,9,10,11 ✅ Angular, Vue Js, React Js ✅ WordPress, Shopify ✅ HTML, CSS, jQuery, Bootstrap ✅ MySQL, PostgreSQL, MongoDB ✅ JavaScript and its frameworks including React.js, Vue.js, Angular2+, Typescript, Node Js ✅ Amazon cloud services (Route 53, SES, EC, RDS, EC2, IAM, CLI, Elastic Beanstalk, Code Pipeline) ✅ Configure Apache and Nginx on Linux server ✅ GitHub, Bitbucket, GitLab ✅ Expert with third party APIs such as Social media integration, Payment gateway, Twilio, WhatsApp, Google API etc. ✅ Machine Learning: OpenAI, ChatGPT, GPT-3, GPT-4, Langchain. I am eager to work with you, solve your problem, and give the best solutions for you and your Business. Don't hesitate to contact me anytime(24X7) to discuss how we can work together to meet your Business Needs fully! I'm flexible in all time zone and am happy to work closely with any existing freelancers you work with.

✅ Top-Rated Freelancer ✅ 5000+ Verified Hours ✅ 100% Happy & Repeat Clients I am a TOP RATED Full Stack Developer with 10+ Years of development experience. I have sound knowledge of Laravel, CakePHP, Symfony, Codeigniter, Yii, Python, Django, NodeJS, AngularJS, ReactJS, MongoDB, and many more. Here are the statistics which speak for my WORK, QUALITY & PUNCTUALITY. 5000+ Successful Verified Hours 100+ Successful Projects 100% Happy, Positive & Repeat client I am providing highly creative and custom website solutions and Graphics Solutions for empowering personal and business processes at the most affordable prices. I am specialize in award-winning Websites, Content Management Systems, E-Commerce Solutions, Social Media Applications, ERP Applications, and Custom Application Development for businesses and individuals. FRAMEWORKS CakePHP | Symfony | Laravel | Zend | Codeigniter | Yii | Smarty JS FRAMEWORKS AngularJS | ReactJS | VueJS | NodeJS PAYMENT GATEWAY Paypal | Authorize.net | Stripe Payment | Google Checkout | Onlinemart | Versapay E-COMMERCE & OSCOMMERCE WordPress | Magento | Prestashop | Drupal SOCIAL API INTEGRATION Facebook | Twitter | Youtube | Linked In | Instagram | Custom APIs

✅ ⭐️⭐️⭐️⭐️⭐️ Ratings in most of the jobs ✅ 100% job success score ✅ Node Js, React Js, Angular Js I'm an expert Full Stack developer (10+ years in Laravel framework and 4+years of experience in Symfony) with extensive experience in building high quality sites. Having 8 years of experience range from building responsive mobile sites that work well cross-browser to building scalable sites for the industries like Hospitality management with membership as well as social media integration, Staffing, Financial, Real Estate, Travelling, Mobile recharge, IPTV and ISP recharge, Online Magazine, Online Store, Job Portal and Portal for Online Video etc. I would like to work on projects with a team (or individually) that cares about creating beautiful and usable interfaces. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. I am flexible with my working hours and I'm happy to work closely with any existing freelancers you work with. I look forward to hear from you! Here is my Skill Set Web Development ✔ Languages – PHP, HTML, HTML5, CSS, CSS3, JavaScript, AJAX ✔ CSS Frameworks – Bootstrap ✔ JavaScript Frameworks – jQuery, AngularJS, Vue.js, React.js, TypeScript ✔ Core PHP ✔ PHP Frameworks – Symfony 2,3,4,5,6, CodeIgniter, CakePHP, Laravel 5,6,7,8,9,10 version ✔ WordPress ✔ Shopify 💳 Payment Gateways ✔ Stripe ✔ PayPal 🔗 API Integration ✔ Twilio, Sailthru API, Aradial, Selevision, Perfect Reach ✔ Facebook, Google+, Mailchimp, REST API, Twitter API ✔ Stripe API, Mailchimp API 🛠 Bug Tracking & Project Management ✔ Trello, Jira, Mantis, Redmine, ClickUp 💻 Operating Systems & Servers ✔ OS – Linux, Windows ✔ Server – Vey Basic knowledge of AWS and Digital ocean 🗄 Databases ✔ MySQL, SQL, MongoDB 📂 Version Control Systems (VCS) ✔ Git (GitLab, Bitbucket, GitHub, Beanstalk)

👋 Hi, I’m Kailash - A Senior Full-Stack Developer - A PHP/Symfony/Pimcore & GenAI Certified I’m a senior full-stack developer with 12+ years of experience helping companies with end-to-end complex design, build, and stabilize production-grade web applications and SaaS platforms. I work best on complex, long-term projects where clean architecture, scalability, and reliability matter more than quick hacks. ⭐What clients usually hire me for: ************************************** ✅ Building or modernizing PHP / Laravel / Symfony–based systems ✅ Designing clean backend architectures using SOLID & DDD principles ✅ Developing full-stack web applications (backend-heavy) ✅ Upgrade/Migrate or maintain a complex web application ✅ Refactoring legacy systems into maintainable, scalable code ✅ Supporting SaaS products, internal platforms, and business-critical apps ⭐ Core Technical Strengths: ********************************* ✅ OOPs Concepts, SOLID Principles, and Domain-driven design structure. ✅ Web/app development with Back-end and Front-end development ✅ UI/UX for website Design, application design, and development ✅ HTML (5), CSS (3), Ajax, Bootstrap, jQuery, JSON, TailwindCSS ✅ MySQL, SQL, NoSQL, MongoDB, PostgreSQL, MVC, JavaScript, Typescript, Restful API, GraphQL ✅ PHP, Symfony, Laravel, Vue.js, Yii, WordPress, Angular, React, Node.js, Python. ✅ Zend, Pimcore, Spryker, Shopware, API-Platform, DoctrineORM, OpenCart, WooCommerce, Gulp, Tomcat, Solr, Twig, SonataAdmin, Elastic Search, Redux, Redis, RabbitMQ, WebRTC, Livewire, Blade, LAMP stack, PHPUnit, Behat. ✅ AI tools: Cursor, Claude, OpenAI, Replit AI, GitHub Copilot. ✅ Quality analysis with manual and automation. ✅ DevOps/ Server skills: Docker, Kubernetes, AWS/ EC2, and other 3rd party services, Azure, Windows, Linux, Apache2, Nginx, CI/CD ✅ Update methodology: Agile or a Scrum method ✅ Project management Tools: Jira, Stack, and ClickUp. Asana ✅ Hands-on experience with Git and Bitbucket. ⭐ Why Clients Work With Me ********************************* 🏅 12+ years of experience as a full-stack developer 🏅 100% Client Recommendation 🏅 90% of Repeated clients 🏅 8+ years of experience transforming ideas into reality ⭐Industry Experience: ************************** ✔️E-Commerce ✔️Electricity/Gas ✔️Financial Services/FinTech ✔️HealthCare/Pharma ✔️Real Estate ✔️Trasportation & Logistics✔️Law Firms ✔️Event/News ✔️Restaurants/FoodTech ✔️Social Media ✔️Eductaion/E-Learning/LMS ✔️Technology Recruitment ✔️Airport/Aviation/Automotive ✔️Gym/Fitness ✔️Security & Fire Sefty I don’t overpromise; I focus on building systems that last. 🎯 If you’re looking for a senior developer who can take ownership, think critically, and deliver clean, scalable code, let’s talk. — Kailash Sharma