Sunil Rathor

Senior Frontend Developer

LinkedIn

About

A highly accomplished Senior Frontend Developer with over 3 years of experience specializing in building and optimizing high-performance web applications. Proven expertise in React.js, Next.js, TypeScript, and GraphQL, consistently delivering scalable, responsive, and engaging user experiences. Successfully drove key performance improvements, including a 30% reduction in page load times, a 50% decrease in API response time, and a 40% improvement in release time through strategic automation and robust system design.

Work Experience

Senior Experience Engineer

Tata Consultancy Services

Jun 2023 - Present

Bangalore, Karnataka, IN

Led high-impact frontend development initiatives for critical user-facing applications at Tata Consultancy Services, significantly enhancing user experience and operational efficiency.

  • Directed frontend development for core platform pages (Search, Booking, Loyalty), impacting over 60 million monthly users across global domains.
  • Optimized React.js and Next.js SSR performance, reducing Time to Interactive (TTI) by 35% through advanced architectural improvements.
  • Integrated GraphQL caching and Webpack chunking/lazy loading, decreasing API response time by 50% and initial bundle size by 30%, while improving FCP & LCP metrics.
  • Automated CI/CD pipelines, enhancing build and deployment processes, resulting in a 40% reduction in release time.
  • Implemented comprehensive Unit Tests using Jest to ensure high code reliability and maintainability across critical applications.

System Engineer

Tata Consultancy Services

Oct 2021 - Jun 2023

Bangalore, Karnataka, IN

Spearheaded the design and deployment of a critical React-TypeScript Case Management System for a top-tier banking client, serving over 500 daily active users.

  • Designed and deployed a robust React-TypeScript Case Management System with Material UI, serving 500+ daily active users for a top-tier banking client.
  • Optimized frontend rendering capabilities, resulting in 25% faster page interactions and improved user responsiveness.
  • Collaborated effectively with backend teams to optimize API performance and data delivery, ensuring seamless system integration.
  • Utilized React.js, TypeScript, and GraphQL to build a scalable and efficient enterprise solution.

Education

Computer Science Engineering

Sapthagiri College of Engineering

7.9 CGPA

Jan 2017 - May 2021

Bangalore, Karnataka, IN

Certificates

Frontend Developer (React)

Hackerrank

Google Associate Cloud Engineer Certificate

Google

Projects

WandarMon AI Chatbot

Jan 2023 - Present

Developed an AI-powered assistant to streamline developer workflows by generating, refactoring, and debugging code through intuitive prompts.

Do100Things

Jun 2022 - May 2023

Created a life-organizing tool designed to foster consistency and accountability by enabling users to track and commit to completing tasks 100 times.

Languages

English

Skills

Frontend Technologies

  • React.js
  • Next.js
  • TypeScript
  • GraphQL
  • Redux
  • Zustand
  • Material UI
  • Webpack
  • SSR (Server-Side Rendering)
  • FCP (First Contentful Paint)
  • LCP (Largest Contentful Paint)
  • TTI (Time to Interactive)
  • Responsive Design
  • Scalable Architecture
  • Frontend Rendering
  • User Experience (UX)
  • UI/UX Design

Programming Languages

  • JavaScript
  • TypeScript

Tools & Platforms

  • Jest
  • OAuth
  • MongoDB
  • Gemini AI
  • CI/CD Pipelines
  • Git
  • API Integration
  • Caching Strategies
  • Bundle Optimization
  • Build Automation
  • Deployment Processes

Development Methodologies

  • Agile
  • Scrum
  • Unit Testing
  • Code Reliability
  • Maintainability

Soft Skills

  • Leadership
  • Problem-Solving
  • Cross-functional Collaboration
  • Strategic Planning
  • Project Management
  • System Design
  • Data Delivery Optimization
  • Innovation
  • Accountability