Apr 2019 – May 2021 · 2 yrs 1 mo · Noida Area, India · On-site

• Worked as part of Samsung’s Project Lead (PL) Team for the Mobile Network Operator (MNO) side, supporting carrier-specific Android customization across USA and Canada, including clients like T-Mobile, Sprint, USC, and MetroPCS.
• Onsite collaboration with Samsung Research Institute to manage Android OS customization and optimization as per MNO requirements.
• Integrated third-party APKs as system or user apps within the Android OS image, ensuring seamless operation, boot-time optimization, and correct permission handling.
• Conducted deep customization of third-party applications and Android system services to meet both carrier and Samsung branding requirements.
• Ensured CTS (Compatibility Test Suite) and GTS (Google Test Suite) compliance for all integrated apps and customized system builds, coordinating issue resolution with Google and internal QA.
• Handled OS upgrade feature development and adaptation, modifying system behavior based on Android version changes while preserving carrier requirements.
• Worked on debugging, profiling, and stabilizing Android framework components related to power management, background restrictions, and system performance.
• Delivered end-to-end customized solutions, incorporating network configurations, UI adjustments, feature toggling, and embedded carrier-specific logic within the framework.
• Led communication with Samsung Canada and internal product owners for requirement analysis, customization planning, and technical feasibility.
• Participated in log analysis, ADB-based debugging, and in-depth testing to identify and resolve system-level bugs pre- and post-deployment.
• Contributed to system build packaging, OTA deployment readiness, and compliance validation before final delivery.

Dec 2017 – Apr 2019 · 1 yr 4 mos · On-site

• Gathered and refined requirements for a POS-centric retailer-engagement app, translating business needs (billing, inventory, order management) into technical specifications.
• Defined module interfaces and data flows to ensure seamless integration between product catalogs, invoicing, and printing subsystems.
• Crafted intuitive, responsive screens for product selection, cart management, and checkout using custom Compound Views.
• Implemented dynamic UI elements (tabs, dialogs, animations) to guide merchants through billing and order workflows.
• Integrated iTextPDF library to programmatically generate professional invoices, credit notes, and receipts in PDF format.
• Designed templating logic for header/footer, line-item tables, taxes, and totals to meet client branding and regulatory requirements.
• Enabled direct printing of PDF bills and invoices via Bluetooth and networked POS printers, handling ESC/POS command sets and print-queue management.
• Ensured correct pagination, font embedding, and image rendering for diverse printer models.
• Adding retailer engagement features and smoothing the existing communication mechanisms.
• Architected local data storage with SQLite and Room to support uninterrupted operation during network outages.
• Developed background sync routines to reconcile offline transactions, inventory updates, and retailer communications once connectivity was restored.
• Organized codebase into feature modules (billing, inventory, reporting) following MVC/MVVM patterns, improving maintainability.
• Collaborated with QA on functional and regression testing, logged and resolved defects to ensure release stability.
• Performed testing on Physical device and the android emulator.
• Participated in daily stand-ups, sprint planning, and retrospective meetings to align with product and QA teams.
• Provided post-release support, troubleshooting production issues, and delivering hot-fix updates.

Dec 2016 – Dec 2017 · 1 yr · On-site

• Led end-to-end development of Netree App a retailer engagement platform for inventory/order management, serving 500+ merchants.
• Built SQLite database for offline billing & sync, reducing data loss by 90% in low-network areas
• Worked with QA to implement automated testing.
• Added QR-based promotions and real-time delivery tracking, boosting merchant adoption by 25%.
• Redesigned 15+ screens following Material guidelines, improving UX.
• Built dynamic PDF invoice generator with iTextPDF supporting 10+ invoice templates
• Developed barcode generation/scanning for inventory, reducing manual entry errors by 65%
• Brother Bluetooth printer SDK for POS receipts and fixed critical printing bugs (30% faster throughput)
• Created scalable product listing UI with lazy-loading (handled 5K+ SKUs)
• Implemented CRUD operations for inventory with real-time sync (SQLite → REST API)
• Contribute to architectural discussions and decisions.
• Write unit and UI tests to ensure app robustness and reliability.
• Follow Agile development practices and participate in daily stand-ups, sprint planning, and retrospectives.
• Collaborate with product managers, designers, and backend developers to define, design, and ship new features.
• Work with APIs and third-party libraries for integrations (e.g., RESTful APIs, Firebase, Google Services
• Drive the end-to-end design, development, and deployment of scalable Android applications with a focus on performance, usability, and maintainability.

Apr 2015 – Nov 2016 · 1 yr 7 mos · Delhi, India · On-site

• Developed Android applications optimized for multiple screen sizes and resolutions, ensuring consistent user experience across a wide range of devices.
• Integrated iTextPDF library to dynamically generate and manage custom PDF templates within the application.
• Handled the complete development lifecycle, including code implementation, application deployment, and post-release bug fixing.
• Designed and implemented SQLite database architecture to allow data persistence and offline access, improving app reliability in low-network conditions.
• Responsible for the end-to-end development of application components and UI resources, following Material Design guidelines and best practices.
• Conducted thorough manual testing on physical devices and Android emulators to validate functionality, performance, and compatibility.
• Collaborated closely with the QA team for test case validation, bug tracking, and ensuring high-quality releases.