RAJESHWAR SINGH

Full Stack Developer at MediSetu

Built a healthcare SaaS platform for appointment booking, patient management, and laboratory operations using React.js on the front end and Node.js/Express on the back end. Led end-to-end development of the Lab Appointment Management module including test booking, scheduling, and patient workflows used by 10+ laboratories in Jaipur. Optimized backend APIs and database queries, reducing response latency from 100–200 ms to 3–5 ms and improving production reliability and performance. Collaborated with product and business stakeholders in sprint-style iterative delivery aligned to real clinic workflows.

Full Stack Developer at Kuchoriya TechSoft

Designed a multi-tenant, distributed SaaS architecture with isolated per-company databases for a CRM platform. Built and maintained 30+ REST APIs (Node.js/Express) with JWT authentication and RBAC across 5+ user roles, applying secure and testable engineering practices. Integrated HLS (m3u8) adaptive video streaming with AWS S3 for large media files (5GB+) with optimized playback across devices.

Freelance Full-Stack Developer at Self-Employed

Designed, built, and deployed end-to-end websites for independent clients alongside full-time work. Delivered animated front-end experiences using GSAP, Framer Motion, and Three.js. Worked across varied backend/CMS stacks including Django, Flask, PHP, and Shopify, adapting the stack to each client's needs and budget. Client examples include legacy sites such as marble.com and skill-tyro.com.