Krish Kar

I specialize in building scalable, high-traffic web applications and hybrid mobile apps using HTML, CSS, React.js and JavaScript. I don't just write front-end code; I build complete business engines.
My core expertise includes:
Complex E-commerce Architecture: Building multi-vendor platforms built for thousands of daily orders and high traffic.
Financial Automation: Developing custom logic for automated revenue tracking and dynamic tax calculations (GST, TDS, TCS).
Advanced Logistics Routing: Structuring deeply nested geographical data (Country > State > District > Sub-areas) for delivery and tracking systems.
Hybrid & Offline-First Apps: Creating robust user experiences that seamlessly sync local data when reconnected to the internet.
Secure Payments & Identity: Integrating reliable payment gateways, OTP verification, and secure document upload flows (KYC, RC, Insurance) for delivery partners.
If you need a developer who understands both complex code and real-world business operations, let's talk about your project.