ANUP SHARMA

Senior Android Developer and Android Technical Lead with 6+ years of experience in Android application development using Kotlin and Java. Expertise in POS and payment solutions, MVVM, Clean Architecture, and third-party SDK integration. Proven experience leading development teams, building scalable enterprise applications, and delivering secure payment solutions for retail businesses.

• Delivered Android solutions across 100+ retail stores in the United States.
• Led the development of enterprise POS platforms for retail, restaurant, fuel, and EV charging businesses.
• Integrated PAX, Clover, and Verifone payment systems.
• Improved application stability through modern Android architecture.

Role: Technical Leader/Senior Software Engineer 

Roles & Responsibilities

• Worked on a large-scale Retail POS application supporting Merchandise, Fuel, and EV Charging business operations.
• Developed and enhanced key modules including Sales, Customer Management, Inventory Management, Batch Processing, Reporting, and Analytics.
• Integrated the Fiserv Payment Processor using a Semi-Integrated Payment Architecture to ensure secure and compliant card transactions.
• Implemented payment functionalities using Verifone PIN Pad Devices, including Sale, Refund, Void, and Pre-Authorization transaction flows.
• Integrated Fuel Dispensers through Site Controller and PTS-2 Forecourt Controller to support fuel authorization and transaction processing.
• Developed fuel sale workflows including Pump Activation, Fuel Dispensing, Transaction Completion, and Settlement.
• Integrated multiple POS peripherals such as 2D Barcode Scanners, Cash Drawers, and Cloud Printers to streamline checkout operations.
• Developed and integrated 10+ Loyalty Programs, enabling rewards, points accumulation, and customer retention initiatives.
• Implemented a flexible Promotions Engine supporting discounts, special offers, and campaign-based pricing.
• Collaborated with cross-functional teams to deliver seamless retail operations across merchandise, fuel, and EV charging workflows.
• Participated in application design, development, testing, deployment, and production support activities.
• Ensured high performance, reliability, and compliance for payment and retail transaction processing systems.

Role: Senior Software Engineer 

Roles & Responsibilities

• Developed and maintained a high-volume Android Retail POS application used by 100+ merchants across the US.
• Implemented Semi-Integrated Payment Solutions using PAX SDK with PAX A35/A37 payment terminals.
• Integrated payment processors including BroadPOS, Elavon, Vantiv (Worldpay), and TSYS Sierra for EMV, contactless, debit, and credit card transactions.
• Developed payment workflows such as Sale, Refund, Void, Pre-Authorization, Capture, and Settlement.
• Built secure communication between POS and payment terminals, ensuring reliable transaction processing.
• Designed robust solutions for network failures, transaction timeouts, and payment recovery, preventing duplicate charges and ensuring transaction consistency.
• Optimized application performance and payment reliability for large-scale merchant deployments.
• Implemented logging, monitoring, and diagnostic tools to improve production support and issue resolution.
• Provided Level-3 Production Support, troubleshooting critical payment and terminal-related issues.
• Participated in architecture design, code reviews, Agile/Scrum ceremonies, deployment, and release activities.

Role: Android Developer

Roles & Responsibilities

• Developed and enhanced features for a Sports Social Media Android Application using Java and Kotlin.
• Implemented functionalities related to live score updates, user engagement, and community interaction.
• Integrated third-party APIs for live sports data, push notifications, and social media sharing.
• Collaborated with UI/UX designers to develop intuitive and user-friendly interfaces.
• Worked closely with QA teams to identify, troubleshoot, and resolve application issues.
• Participated in code reviews and followed Android development best practices to maintain code quality.
• Optimized application performance and improved overall user experience.
• Contributed to feature development, testing, deployment, and production support activities.

Role: Android Developer

Roles & Responsibilities

• Developed an Android application for remote drone monitoring and gas pressure inspection.
• Integrated DJI SDK for drone connectivity, flight control, and mission execution.
• Implemented Mapbox for map visualization, polygon creation, and KML file upload to define drone flight areas.
• Integrated MPAndroidChart for displaying gas pressure and inspection data analytics.
• Worked on real-time communication between the mobile application and drone systems.
• Participated in feature development, testing, bug fixing, and production support.