Harshad Waghmare

Full Stack Developer | MERN Stack Developer | Backend Engineer

Talent

MumbaiMember since August 10, 2026

React.jsNext.jsTailwind CSSReduxZustandNode.jsExpress.jsJWT AuthenticationRBACError HandlingMongoDBPostgreSQLGitGitHubSocket.io

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React.jsNext.jsTailwind CSSReduxZustand

About

Full Stack Developer specializing in MERN Stack development, REST API engineering, and scalable web application architecture. Proficient in Node.js, Express.js, React.js, and Next.js with hands-on experience delivering production-ready applications featuring JWT authentication, role-based authorization (RBAC), and MongoDB/PostgreSQL database integration. Adept at clean code architecture, API performance optimization, and building startup-ready software.

Experience

Full Stack Developer Intern at Next Gen Startup (2025-12 – 2026-03)

Developed and deployed JWT-based authentication and role-based authorization (RBAC) workflows with optimized MongoDB schema integrations and structured RESTful CRUD operations, improving backend security and data consistency across all API endpoints.
Diagnosed and resolved critical API performance bottlenecks using query optimization and server-side caching strategies, reducing average response latency and improving overall application throughput in a production environment.
Engineered reusable React.js component architecture with protected route handling and scalable state management using Zustand and Redux, reducing frontend development time and ensuring consistent UI behaviour across the application.
Designed and delivered fully responsive, mobile-first UI layouts using Tailwind CSS, improving cross-device user experience and contributing to frontend component reusability standards that accelerated feature delivery.