Chetan Prajapati

Senior Frontend Engineer

Ohio, US.

About

Highly experienced Senior Frontend Engineer with over 7 years of expertise in building scalable web and mobile applications using React.js, Next.js, Angular, React Native, Node.js, and Python, with a strong focus on cloud-native development with AWS. Proven track record in component-based architecture, performance optimization, and API integrations, driving successful high-quality outcomes across diverse domains including healthcare, logistics, energy, manufacturing, and fintech. Combines advanced knowledge in enterprise architecture from a Master's in Systems Engineering with hands-on experience in Agile development and CI/CD automation to deliver robust, high-performance solutions.

Work

Freelancing.

|

Application Developer

N/A, N/A, N/A

→

Summary

Developed and designed a custom Android tablet application for comprehensive inventory management, invoicing, and daily retail operations, enhancing efficiency and accuracy.

Highlights

Eliminated inventory errors and perfected accuracy through the integration of barcode scanning, stock tracking, and low stock warning functionalities.

Streamlined user training and onboarding by designing an intuitive touch-based user interface, significantly reducing time-to-proficiency.

Enhanced overall billing efficiency by developing capabilities for invoice creation, digital receipt printing, and customer tracking.

Reduced physical paper trail by 80% and provided real-time operational visibility through comprehensive reporting dashboards.

Ensured business continuity by implementing robust offline capabilities with background data storage and synchronization for uninterrupted operations.

OSI Digital Inc.

|

Lead Frontend Engineer

N/A, N/A, N/A

→

Summary

Led critical front-end and cloud-based projects across healthcare, logistics, and hospitality sectors, leveraging modern JavaScript frameworks and AWS services.

Highlights

Engineered a pixel-perfect hotel reservation system using React.js and Storybook.js, optimizing React rendering for a 40% improvement in page load speed for Sitecore-based CMS integration.

Developed real-time dashboards and mobile interfaces with React Native for IoT-based cold chain logistics and healthcare condition monitoring, enhancing operational oversight.

Collaborated cross-functionally with backend and architecture teams, reducing time-to-market by 25% through performance testing, optimization, and modular design planning.

Mentored and led a team of junior engineers in Agile/Scrum environments, improving code quality, reducing bugs, and accelerating onboarding timelines through technical guidance and code reviews.

Integrated a comprehensive suite of AWS services (Lambda, GraphQL, AppSync, Cognito, EC2, S3, ECS, DocumentDB, API Gateway) to support DevOps initiatives and optimize cloud infrastructure.

Mobigesture Software Pvt. Ltd.

|

Senior Software Engineer

N/A, N/A, N/A

→

Summary

Built scalable web/mobile applications and successfully migrated legacy systems across food-tech, energy, and cloud platforms.

Highlights

Delivered a gamified React Native mobile app for a green-energy rewards platform, achieving over 500 downloads on both Google Play Store and Apple App Store.

Developed full-stack web and mobile applications for a diet-focused food delivery and retail chain using React, React Native, Node.js, GraphQL, Apollo Client, and AWS AppSync.

Migrated a legacy Backbone.js cloud dashboard to a React-based micro frontend architecture, enhancing scalability and maintainability for a leading multi-cloud enterprise platform.

Streamlined CI/CD workflows using AWS Amplify and GitHub Actions, reducing testing costs by 30% through automation.

Ensured high-quality user experiences by establishing and maintaining end-to-end and cross-browser compatibility testing using Cypress and Playwright.

Manasa Software Pvt. Ltd.

|

Software Engineer

N/A, N/A, N/A

→

Summary

Contributed to the full-cycle development of ERP, manufacturing, and mobile solutions, leveraging React, Angular, and Spring Boot frameworks.

Highlights

Deployed cross-platform Tip Payment applications, achieving a 99.9% transaction success rate and processing over 5,000 transactions weekly.

Built a custom ERP system using React, Redux, React Hooks, ContextAPI, integrated with Spring Boot Microservices to streamline business operations.

Developed a React Native operations app for manufacturing field users, integrating with real-time APIs to enhance operational efficiency and data accessibility.

Developed responsive, cross-browser web applications adhering to modern web standards and design principles, ensuring consistent user experience across devices.

Automated CI/CD workflows with Jenkins, significantly improving deployment speed and reducing manual QA efforts.

Education

Harrisburg University of Science and Technology

Harrisburg, Pennsylvania, United States of America
→
Masters Systems Engineering Grade:

Jawaharlal Nehru Institute of Technology

Hyderabad, India, India
→
Bachelor's Electronics and Communication Engineering Grade:

Skills

Programming Languages

JavaScript (ES6+), TypeScript, HTML, CSS, Java.

Frontend Frameworks/Libraries

React.js, Next.js, React Native, Redux, Angular, Context API, Storybook, Chart.js, jQuery.

Backend Technologies

Node.js, Express.js, NextJS, REST APIs, SOAP, GraphQL, Apollo Client.

Cloud & DevOps

AWS (Lambda, AppSync, Cognito, EC2, S3, DocumentDB, ECS, SNS, API Gateway), AWS Amplify, Jenkins, Git, GitHub Actions.

Testing & Debugging Tools

Jest, React Testing Library, Cypress, Playwright, Postman, ESLint, Prettier.

Mobile Development

React Native, Native Bridging, Android/iOS Deployment.

Databases

MongoDB, MySQL, PostgreSQL.

Methodologies

Agile, Scrum, OOP (Object Oriented Programming), XML, JSON.