Ramkumar – Full-Stack Mobile, Backend & Frontend Developer
I am a Tech Lead and Full-Stack Developer with 9+ years of experience in mobile, backend, and frontend development. Over the years, I have built and deployed high-performance applications across various industries, including transportation, education, and enterprise field operations.
What sets me apart is my ability to develop end-to-end solutions, from UI/UX to backend architecture and cloud deployment. I specialize in Kotlin, React Native, Node.js, AWS, Google Cloud, and frontend technologies to deliver scalable and efficient applications.
Professional Experience
Tech Lead
Xfactr, Bangalore (2023 – Present)
Leading mobile and backend development for scalable enterprise applications.
Implementing cloud-based architectures using AWS & GCP.
Tech Lead
Msys Technologies (2021 – 2023)
Designed and developed high-performance backend solutions.
Managed full-stack projects integrating React Native, Node.js, and MongoDB.
Senior Developer
Calibraint Technologies (2019 – 2021)
Developed mobile and web applications with React Native, Redux, and Kotlin.
Worked on real-time tracking and payment gateway integrations.
Junior Developer
Orgware Technologies, Chennai (2016 – 2019)
Built and maintained Android applications with Kotlin & Java.
Developed backend APIs using Node.js and MongoDB.
Skills
Language
Work Experience
Education
Qualifications
Industry Experience
- React Native - Cross-platform mobile development
- Hooks, Redux, Saga - State management and async operations
- In-App Updates - Seamless app version upgrades
- Payment Gateway - Secure transactions for premium courses
- Firebase Messaging - Push notifications for user engagement
- AWS - Hosting and cloud infrastructure
- HTML, CSS - Frontend design
- S3 Bucket - Secure storage for course content
- Node.js - Backend server for API handling
- MongoDB - NoSQL database for scalable data storage
- AWS & S3 Bucket - Cloud storage and deployment
- GCP - Additional cloud services
- JWT - Secure authentication and user management
- Developed the mobile app using React Native with Redux & Saga.
- Integrated payment gateway for seamless transactions.
- Implemented Firebase Messaging for real-time notifications.
- Built the admin website using HTML, CSS, AWS, and S3 Bucket.
- Designed and developed the backend using Node.js, MongoDB, AWS, GCP, and JWT authentication.
- Deployed and managed the Play Store release for Android users.
Language Learning App
[
🖥️ Admin Website
🔗 Backend
🎯 My Role & Responsibilities
[📥 Play Store Link](https://www.twine.net/signin
- Kotlin - Primary language for Android development
- Coroutines - Asynchronous programming for improved performance
- Live Tracking - Real-time location updates for accurate incident reporting
- Dagger Hilt - Dependency injection for a scalable and modular architecture
- MVVM - Clean architecture pattern for maintainability
- GraphQL - Efficient data fetching and API communication
- Realm - Local database for offline storage and syncing
- Developed the app from scratch, handling end-to-end development.
- Implemented Live Tracking to ensure accurate location-based incident reporting.
- Integrated GraphQL for optimized data retrieval and backend communication.
- Designed a scalable architecture using MVVM and Dagger Hilt.
- Utilized Realm for local data storage, ensuring offline functionality.
- Managed Google Play Store deployment and updates.
Reporter App
[![Download on Play Store](https://www.twine.net/signin
📌 Project Overview
Reporter App is a field reporting application designed for workers in Canada to mark incidents at their locations. The app enables real-time incident logging with precise geolocation tracking, ensuring accurate data collection for safety and compliance purposes.
🔧 Tech Stack
🎯 My Role & Responsibilities
[📥 Play Store Link](https://www.twine.net/signin
- Kotlin - Core language for Android development
- Coroutines - Asynchronous programming for better performance
- Google Maps API - Integration for real-time location tracking
- Live Tracking - Provides users with accurate vehicle location updates
- REST API - Backend communication and data management
- Dagger Hilt - Dependency injection for scalable architecture
- MVVM - Clean architecture pattern for better maintainability
- Designed and developed the application from scratch.
- Implemented Google Maps API for live tracking of vehicles.
- Integrated REST API for secure and efficient backend communication.
- Optimized app performance using Coroutines for background tasks.
- Ensured scalable architecture with MVVM and Dagger Hilt.
- Managed the entire deployment process on the Google Play Store.
FastTrack Booking
[![Download on Play Store](https://www.twine.net/signin
📌 Project Overview
FastTrack Booking is a real-time ride-hailing and tracking application that provides seamless booking and live tracking of vehicles. Built with a focus on efficiency and reliability, the app ensures a smooth user experience with real-time updates and secure transactions.
🔧 Tech Stack
🎯 My Role & Responsibilities
[📥 Play Store Link](https://www.twine.net/signin
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