Harsh Jhunjhunuwala
Frontend Engineer | Building Scalable & High-Performance Web Applications
I'm a passionate Frontend Engineer with a knack for crafting intuitive user experiences and robust, efficient code. My journey in web development has been driven by a desire to solve complex problems and deliver impactful solutions. I thrive on optimizing performance, enhancing maintainability, and integrating cutting-edge technologies to build applications that truly stand out.
My Toolkit
JavaScript
C#
HTML
CSS
React
Redux
Flutter
Firebase
Git
Jenkins
Cycode
MySQL
Data Structures and Algorithms
System Design
Professional Journey
Frontend Engineer
NielsenIQ | Jul 2022 - Present
- Led frontend development using React.js, building scalable and high-performance applications. Implemented optimizations like lazy loading, code splitting, and pagination to improve page load times by 40%, reduce bounce rates by 20%, and enhance data handling efficiency, resulting in a significantly better user experience.
- Implemented end-to-end token-based authentication, obtaining access tokens via API using user credentials, securing API requests by passing tokens in headers, and maintaining seamless user sessions with automatic refresh token updates every 15 minutes.
- Migrated legacy systems to React architecture using JavaScript (ES6+) and TypeScript, increasing code maintainability and reducing maintenance costs by 50%.
- Optimized API integrations with RESTful APIs, reducing API calls by 25% and cutting server costs by 15% through efficient data fetching and caching strategies.
- Streamlined deployment processes using Jenkins, managing both manual and automated deployments to reduce deployment time by 30% and minimize production errors. Leveraged Git, Bitbucket, and GitHub for version control, improving team collaboration and code management efficiency.
SDE Internship
IDCLE Tech LLP | Mar 2021 - Jun 2021
- Built an inventory and stock management app with a seller-side module.
- Implemented barcode-based billing with cross-platform support.
- Delivered admin and seller apps within 3 months.
- Project Link: Inventory Presentation
Featured Creations
VerifyEmail App
swiftools.com/verifyemail-addon/
- Designed and solely developed a Google Sheets™ add-on using Google Apps Script (JavaScript-based) for bulk email verification.
- Integrated third-party APIs to enable real-time email validation, improving accuracy for 800+ global customers.
- Built and designed the landing page for user engagement and seamless onboarding.
- Implemented a subscription-based payment system (monthly, yearly, lifetime) with paywall integration.
Formlinker.com
- Created a Google Forms™ add-on using Google Apps Script (JavaScript) to send real-time Slack notifications for new form submissions.
- Developed API integrations for instant data processing and communication across platforms.
- Designed and built the landing page for smooth user navigation and onboarding.
- Integrated a subscription-based access model with automated payment handling.
Milestones & Recognition
- Achieved a top 10 ranking out of over 2000 teams to qualify for Level 3 of the Flipkart Grid 3.0 competition.
- Attained a top 50 placement nationwide to compete in the National Level CTF (Ethical Hacking) Competition at IIT Bombay.
- Top 10 Talents Award (2022), NielsenIQ – Recognized for adaptability in learning new technologies and contributing to product enhancements and feature development.
Education & Instruction
BE/B.Tech/Bs
Maharashtra Institute of Technology | 2022
Course Instructor
Udemy | Jun 2021 - Present (4 yrs 3 mos)
- Course on LinkedIn Growth Hacking & Personal Branding: Link to Course
- Course on Git Ultimate: Master Git & GitHub - Beginner to Expert: Link to Course