Sidharth Thakur

At Quark City, I developed a full-stack POS and self-service recharge kiosk using React, TypeScript, Node.js, Express, and SQL Server. The system supports parking, gym, and food-service recharge, with payment processing, wallet management, transaction tracking, and invoice generation.

I also worked on business applications including payment and recharge platforms, Gate Pass Management, and CRM applications. For Gate Pass Management, I developed features for creating, approving, validating, and tracking entry and exit passes.

I developed Quark Employee, a cross-platform employee management mobile application using React Native, and built reusable, responsive UI components for employee workflows. I also debugged issues across frontend, backend, APIs, and databases, including production payment and transaction issues.