Preeti Barnwal

Android Developer with 4+ years of experience building scalable, high-performance, and user-centric Android applications using Kotlin and Java. Skilled in Jetpack Compose, MVVM, Clean Architecture, Room DB, Retrofit, Coroutines, and Flow, with strong expertise in performance optimization, offline-first architecture, and secure data handling. Worked across logistics, POS, fitness, wellness, sports, and community-based applications, including Safexpress Proscan, retail POS systems, Energizeme, Cleverfit, Augenzeuge, and Predit.

Experienced in implementing shipment loading/unloading workflows, barcode/QR scanning, Zebra printer and scanner integration, payment systems, and real-time tracking features. Proficient in Firebase services, REST API integration, WorkManager, and modern Android Jetpack libraries to build reliable and maintainable applications. Experienced in unit and UI testing using JUnit, Espresso, and Appium, along with CI/CD practices and Agile collaboration to deliver clean, scalable, and production-ready solutions.

Experienced in using AI-assisted development tools such as Claude, Gemini, Cursor, and GitHub Copilot for code generation, debugging, refactoring, documentation, and development productivity. Familiar with AI-DLC practices, Generative AI concepts, prompt engineering, and AWS cloud services for modern software development.

Sr. Software Developer - Webkorps Services India Pvt Ltd - Indore

(2025-06)

Client: Safexpress

• Developed Android-based logistics solutions for shipment loading, unloading, package scanning, and real-time tracking operations.
• Implemented barcode and QR code scanning features using enterprise-grade devices such as Zebra, Urovo, and Chainway scanners.
• Designed and integrated RESTful APIs for secure and efficient shipment data processing and tracking.
• Used Room Database for reliable offline data storage and seamless synchronization of logistics data.
• Leveraged WorkManager for background data sync, enabling smooth offline–online workflows in warehouse and transportation environments.
• Optimized application performance for fast scanning, real-time shipment updates, and high-volume logistics operations.
• Contributed to Low-Level Design (LLD), code reviews, merge management, and mentoring junior developers as a senior team member.

Android Developer - Apprication Pvt Ltd - Mumbai, Maharastra

(2024-03 - 2025-05)

Project: Quickvee – POS (Point of Sale) Application

• Developed and maintained Android applications for retail store operations, including transactions, inventory management, billing, and payment processing using Kotlin and MVVM architecture.
• Implemented Room Database for offline transaction caching and reliable data handling during network connectivity issues.
• Integrated QR/barcode scanning and payment gateway solutions to enable smooth and fast checkout experiences in store environments.
• Enabled real-time data synchronization, notifications, and operational alerts using Retrofit and Firebase services (FCM, Firestore).
• Utilized Jetpack components such as Navigation and WorkManager for seamless app navigation and background task management.
• Used Glide for optimized image loading and improved UI performance across store management modules.
• Technologies: Kotlin, MVVM, Retrofit, Room DB, Firebase (Auth, Firestore, FCM), Jetpack Components, Glide, REST APIs.

Android Developer - Applaunch.io - Bangalore

(2022-04 - 2024-03)

Projects – Energizeme, Cleverfit, Augenzeuge & Predit

• Contributed to multiple Android applications across fitness, wellness, community engagement, and sports domains using Kotlin, MVVM, and Clean Architecture.
• Energizeme & Cleverfit: Developed fitness and workout-related features including video streaming with ExoPlayer, workout session management, subscription-based content delivery, and Bluetooth device connectivity for smart fitness tracking.
• Augenzeuge: Built community-driven modules such as theft reporting, incident tracking, location-based alerts, and real-time case status updates.
• Predit: Developed interactive sports features including match predictions, league/tournament creation, live score tracking, and engaging modern UI experiences.
• Used Jetpack Compose and DataBinding to create responsive, dynamic, and user-friendly interfaces.
• Integrated Firebase services for authentication, push notifications, analytics, and real-time updates.
• Implemented Room Database for offline caching, Retrofit for REST API integration, and Kotlin Flow/ViewModel for reactive state management.
• Followed modular and scalable architecture using Dagger Hilt, BroadcastReceiver, and Jetpack libraries to improve maintainability and performance.
• Technologies: Kotlin, MVVM, Jetpack Compose, Room DB, Retrofit, Flow, Firebase, ExoPlayer, Bluetooth API, Dagger Hilt, Glide, Clean Architecture.

Operation Engineer – Production & Quality - MAHLE ANAND Thermal Systems Pvt. Ltd. - Noida

(2018-08 - 2021-02)

Automobile Manufacturing Industry

• Managed daily production activities and ensured smooth operation of the production line.
• Handled line-related issues and coordinated with maintenance and quality teams for quick resolution.
• Performed troubleshooting of machines and process-related problems to minimize downtime.
• Maintained production records, documentation, and daily reporting.
• Ensured implementation and sustainability of 5S, Kaizen, TPM, TQM, and Kanban practices on the shop floor.
• Monitored product quality and resolved quality-related issues during production.
• Coordinated with team members to achieve production targets, quality standards, and safety requirements.
• Supported inventory control and material management activities.
• Participated in a Quality Circle Project using the 12-step PDCA methodology to identify and eliminate root causes of defects.
• Developed a 3-month problem rating chart and implemented corrective actions for recurring production issues.
• Applied quality tools such as Fishbone Diagram (4M), Why-Why Analysis, Brainstorming, and Flow Charting for root cause analysis.
• Contributed to a project that resulted in cost savings of approximately ₹6,00,000 through quality and process improvements.

BE - Computer Science - The Indian Institution of Engineers India (2020-10 - 2023-12)

Diploma - Electrical Engineering - Government Women's Polytechnic Bokaro (2015-08 - 2018-08)