Pankaj K.

I'm a Senior Full-Stack Developer with 20+ years of experience and 140+ completed Upwork jobs, helping clients keep existing platforms running smoothly while also building new features on modern stacks. What I actually do, day to day: - Maintain and extend legacy platforms — PHP, CodeIgniter, WordPress, Joomla, MySQL — fixing bugs, improving performance, and handling migrations without breaking what already works. - Build and support modern web apps — React and Node.js, deployed on AWS, including security hardening and analytics setup (GA4, GTM, tracking). - Develop custom booking/business logic — for example, building multi-staff scheduling, group and couple booking flows, deposit management, and multi-language appointment workflows. - Use AI-assisted development tools — including Claude Code and GitHub Copilot — to move faster without cutting corners. I use them to speed up boilerplate, refactoring, and debugging, while still applying my own engineering judgment, security review, and architecture decisions on everything I ship. Why clients keep me around long-term: ✔ I show up for the boring-but-critical stuff — security patches, bug fixes, performance issues — as reliably as for new feature builds ✔ Full-stack range across both legacy (PHP/Joomla/WP) and modern (React/Node) systems, so you don't need two different developers ✔ Clear communication, fast turnaround, and I document what I change ✔ 100% Job Success, Top Rated, 5.1K+ hours delivered If you need a developer who can jump into an existing codebase — however old or new — and just get things working correctly, I'd be glad to discuss your project.