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Rajat Chhapre

@rajatchhapre

Frontend Lead at CMS | NHAI Data Lake 3.0, delivering React workflows for highway management with Keycloak and Digi Aadhaar authentication.

India

Message

At CMS | NHAI Data Lake 3.0, I lead frontend architecture and delivery for a government highway-management platform while staying hands-on with implementation and defect resolution. I build reusable React interfaces and REST API integrations for workflows including contractor onboarding and payments.

I implement Keycloak/SSO and Digi Aadhaar authentication, and handle document transfers through AWS S3 pre-signed URLs. I also coordinate code reviews, delivery tracking and production releases with developers and backend and business stakeholders.

In earlier roles, I developed React applications across healthcare, e-commerce and enterprise technology, and built responsive dApp interfaces for freelance engagements. For BinaBox, I implemented MetaMask connectivity and smart-contract creation and viewing flows.

Experience

Work history, roles, and key accomplishments

Current

Frontend Lead / Senior React Developer

Current

CMS | NHAI Data Lake 3.0

Jan 2025 - Present (1 year 9 months)

Lead frontend architecture and delivery for a large-scale, multi-module government platform using React, TypeScript, Redux Toolkit, MUI and Tailwind CSS/SCSS. Implement secure authentication with Keycloak/SSO and Digi Aadhaar, and handle document upload/download through AWS S3 pre-signed URLs.

React TypeScript Redux toolkit MUI Tailwind SCSS REST APIs Axios Keycloak SSO Aadhaar S3 Docker CI CD Git PR Review SonarQube

Senior React Developer (Freelance)

Independent Freelance Engagements

Jul 2023 - Dec 2024 (1 year 5 months)

Built responsive, high-performance dApp interfaces using React, SCSS, Tailwind CSS and Bootstrap. Implemented MetaMask wallet connectivity and smart-contract creation/viewing flows with secure transaction and wallet-state handling.

React SCSS Tailwind Bootstrap Web3 Blockchain MetaMask Smart Contracts

Senior React Developer

Buzzart Software Solution Pvt. Ltd.

Nov 2022 - Apr 2023 (5 months)

Developed a responsive, large-scale React Native healthcare appointment application covering doctor/hospital search, slot selection and scheduling for video and in-person visits. Built reusable, performance-optimized mobile components and secure API integrations, with attention to protecting sensitive patient data.

React Native React JavaScript API Integration SonarQube Android Studio

Senior React Developer

Java R&D Pvt. Ltd.

Jan 2022 - Aug 2022 (7 months)

Built a responsive, large-scale FTP-style file management application in React for uploading/downloading files and folders between local systems and AWS S3. Implemented secure role-based access control (RBAC) for file operations and Salesforce login/SSO integration.

React S3 RBAC Salesforce SSO Amazon Polly SonarQube

React Developer – E-commerce Platform

Java R&D Pvt. Ltd.

Jan 2020 - Dec 2021 (1 year 11 months)

Developed frontend modules for a large-scale e-commerce platform using React, building responsive, mobile-first and reusable UI components. Followed secure coding practices for client-side data handling and API communication.

React JavaScript HTML5 CSS Responsive Design Git SonarQube

React Developer – Healthcare Project

Java R&D Pvt. Ltd.

Jan 2019 - Dec 2020 (1 year 11 months)

Built responsive React UI and application workflows for a large-scale healthcare platform, using reusable components and state management. Applied secure development practices for handling sensitive healthcare data and API integrations.

React JavaScript State Management API Integration SonarQube

React Developer – Cisco Project

Java R&D Pvt. Ltd.

Jan 2018 - Dec 2019 (1 year 11 months)

Developed responsive React UI and workflows for a large-scale enterprise networking application. Implemented secure, maintainable, reusable components with consistent cross-browser behavior.

React JavaScript HTML5 CSS Cross Browser Development SonarQube

React Developer – Rapid Response Portal

Project Experience

Jan 2017 - Dec 2018 (1 year 11 months)

Built Jira-style project tracking features (project details, team roles, labels, Kanban views) with React, Redux, React Hooks, Bootstrap, CSS and HTML. Implemented a responsive Kanban board with Material UI and integrated secure SSO.