Hansraj Singh Tomar

Full-stack MERN Engineer

Noida, India 3+ yrs exp 87 · Excellent

About

Full-stack MERN Engineer with 3.5+ years building high-traffic web and mobile applications using React.js, Next.js, React Native, Node.js, Express.js, MongoDB, and TypeScript. Designed component-driven frontend architectures, cut page load times by up to 45%, and delivered REST/GraphQL APIs backed by Redis caching and RabbitMQ. Hands-on with JWT authentication, RBAC, Docker, and Jenkins CI/CD in Agile teams.

Skills & Expertise (52)

React.js Advanced

8.5/10

3.5

Years Exp

Node.js Advanced

8.2/10

3.5

Years Exp

Typescript Advanced

8.0/10

3.5

Years Exp

Git Advanced

8.0/10

3.5

Years Exp

REST APIs Advanced

8.0/10

3.5

Years Exp

MongoDb Intermediate

7.8/10

3.5

Years Exp

Jest Intermediate

7.5/10

3.5

Years Exp

Docker Intermediate

7.5/10

3.5

Years Exp

GraphQL Intermediate

7.0/10

3.5

Years Exp

Javascript (ES6+ TanStack Query Gitlab Jenkins Postman Jira Chrome DevTools VS Code Agile Frontend Architecture Design Patterns SEO Responsiveness Accessibility Performance Optimization SSR SSG ISR RBAC Cursor IDE ChatGPT Token RabbitMQ C++ Next.js React Native SCSS Tailwind CSS Ant design Material UI Chart.js CSS3 Express.js Unit Testing Redis Strapi JWT Mongoose Postgresql REDUX Zustand HTML5 SQL

Work Experience

Software Engineer

Paytm

Jan 2025 - Present

Developed frontend for B2C payment platforms using React.js, Redux Toolkit, TypeScript, and Material UI, supporting 3 role-based transaction flows across merchants, customers, and agents. Reduced feature implementation time by 40% with AI-assisted development (Cursor IDE, ChatGPT) and raised Jest test coverage by 30% through automated test generation. Cut page load time by 20% via code splitting, lazy loading, and memoization across 50+ reusable components. Decreased critical production errors by 15% by restructuring Redux state management and adding centralized error handling. Built a secure Backend-for-Frontend (BFF) layer in Node.js with JWT auth, AES/RSA encryption, and Jenkins CI/CD, shortening release cycles by 40%.

Software Engineer

Soft Spectrum Technology

Dec 2022 - Jan 2025

Shipped 5+ production web applications with React.js, Next.js, TypeScript, Tailwind CSS, and Ant Design, improving client delivery turnaround by 25%. Designed RESTful APIs in Node.js/Express using MVC, with MongoDB/Mongoose schemas and aggregation pipelines that cut query response time by 35%. Reduced API latency by 40% by introducing Redis caching and RabbitMQ queues for async jobs and notifications. Containerized services with multi-stage Docker builds and Nginx, standardizing dev, staging, and production deployments. Accelerated page loads by 45% and improved Lighthouse scores using Next.js SSR, SSG, and ISR.