I am Chandan Kandar, a full-time professional full-stack developer with over 13+ years of experience in developing production-grade web applications, APIs, backend services, mobile app integrations, plugins, and modular software systems. I work as an individual independent freelancer — not an agency, not an outsourcing vendor, and not a beginner. I take full personal responsibility for the projects I accept. I have expertise in Core PHP, Laravel, CodeIgniter (CI3 & CI4), WordPress, React, Next.js, React Native, custom system architecture, payment gateway integrations, AI-API integrations (MetaAi/ OpenAI / Google AI APIs), real-time streaming, and secure application design. My completed projects and client reviews confirm my ability to deliver robust, scalable, and maintainable systems. Technical Expertise & Skills Overview =============================== Backend & Frameworks: - Custom PHP - Laravel - CodeIgniter (CI3 & CI4) - Symfony - WordPress (custom plugins & headless WP) - Smarty PHP -- Node Js -C++ Progaming -Python Frontend: - HTML5 - CSS3 - Tailwind CSS - Bootstrap - React JS - Next.js - custom JavaScript - jQuery - Three.js Mobile App Development: - React Native - Flutter - Cordova Database Systems: - MySQL - SQLite - MongoDB - MySQL Server System Architecture & APIs: - REST API - Realtime sockets - FFmpeg - live audio/video chat - voice/video streaming - geolocation & GPS APIs - encryption and secure networking AI & Modern Integrations: - ChatGPT API - OpenAI API - Google AI API - WhatsApp API - Google APIs - Facebook Graph API - Crypto & blockchain APIs Server & OS Background: - Linux - Ubuntu - Windows - Debian - cPanel - staging & production deployment Security & Encryption: - SSL / HTTPS - Secure payment APIs - user data encryption - role-based access - security auditing - protection against injection & XSS Project Methodology & Execution Philosophy ===================================== Professional development is not “quick coding and pushing random updates.” It is structured, documented, strategically organized, tested, and aligned with architecture. I follow: - MVC principles - DRY code patterns - PSR-12 standards - semantic naming - logical layering - scalable module design Conclusion ========== I work with honesty. I deliver with commitment. I code with discipline. I communicate professionally. I respect agreements and expect the same. payment cover under freelancer milestone terms & conditions portfolio link : [login to view URL] Thank you, Chandan Kandar