Android application design (HLD-LLD) and development (Kotlin and Java) using MVVM and Clean Architecture for scalable and maintainable Android apps. Led Android application development using Kotlin, Java, XML layouts, and Jetpack Compose. Produced High-Level Design (HLD) and Low-Level Design (LLD) documentation for some products such as PayPal High Yield Savings, PayPal Balance, PayPal Cash-in. Implemented MVVM and Clean Architecture principles to improve scalability and maintainability. Developed reusable libraries and interfaces for internal client module consumption. Integrated REST APIs using OkHttp. Optimized application lifecycle management by leveraging Jetpack Compose components (ViewModel, LiveData, Navigation) for Cash-in module. Improved app performance, memory consumption, and loading times for Savings module. Conducted code reviews, mentored junior developers, and established engineering code standards. Collaborated cross-functionally with QA, Backend, UX/UI, Analytics, and Product teams within a Scrum framework. Automated functional testing (FTs) and leveraged AI tools (Claude, ChatGPT, Gemini) for code review and optimization.

Developed and maintained consumer-facing and enterprise purchasing management applications (Web, iOS, Android). Built native mobile applications for iOS (Swift) and Android (Java). Developed web applications and APIs REST using CakePHP and JavaScript. Built and maintained websites using WordPress and CakePHP. Managed application deployment and maintenance on Google Play Store.

Developed and maintained websites optimized with SEO using WordPress and PHP and native mobile apps for Android (Java) and iOS (Swift). Developed native Android applications using Java. Built websites using WordPress and PHP. Created digital content and implemented SEO optimization strategies.