Kumar H Email & Phone Number

Chicago, Il

- Engaged in Agile software development, actively participating in sprint planning, execution, and retrospectives for timely project delivery. Managed pull requests, ensuring code quality before merging into the main codebase.- Utilized Jetpack suite for consistent in-app navigation (navigation graph), efficient data loading (pagination), and building declarative UIs (Jetpack Compose).- Integrated APIs with Retrofit and GraphQL, adhering to predefined schemas for efficient backend data retrieval.- Dagger 2 and Hilt for dependency injection, ensuring cleaner code and easy testing.- Designed a reusable library encapsulating core banking logic, creating clear interfaces for GUI.- Implemented real-time audio/video streaming using WebRTC for messaging app features.- Implemented RESTful services, managing multithreading using Executors/JobIntent Services for concurrent operations.- Developed Kotlin Coroutines and Flow for reactive data handling, improving performance.- Authored test cases using Mockito for business logic and Espresso for UI, meeting quality standards.- Enhanced code reusability with Kotlin extension functions, adhering to Clean Architecture principles using Kotlin Flow and coroutines.- Utilized Android Architecture Components (LiveData) for lifecycle-aware data observation and UI updates.- Improved Android Keystore for secure key storage, ensuring protection against unauthorized access.- Integrated biometric authentication (fingerprint scan/facial recognition) for user access.- Configured GraphQL API with AWS AppSync and Amazon Cognito for robust user authentication.- Implemented Modal Drawer Layout with Jetpack Compose for smooth navigation drawer experience.- Established real-time callbacks to Salesforce API for user spending details and instant transaction notifications.- Configured Contactless payment support using Google Pay API, meeting Strong Customer Authentication (SCA) requirements over four sprints.

Safeway, Ca

- Utilized Android Studio as the primary IDE for Android app development, leveraging its tools for development and testing. Followed OOP and SOLID principles, utilizing SDK and diverse devices for feature creation and testing.- Developed Kotlin modules with MVVM, focusing on maintainability and testing efficiency. Integrated Fused Location Provider for accurate tracking during deliveries, working in a small Kotlin coding team.- Troubleshot production issues related to API errors and connectivity, employing Kotlin coroutines for improved app performance. Adopted Offline-First using Room Databases for enhanced data handling.- Incorporated Lottie animation library for native UI enhancements. Collaborated with stakeholders and QA for streamlined workflows and thorough testing with Robolectric, Mockito, and Espresso.- Led Kotlin-native development of a grocery delivery app for drivers. Utilized RxAndroid, RxBluetooth, and RxKotlin for event-based programming and Retrofit with RxJava for RESTful services.- Engaged in rigorous code reviews, ensuring high quality, using SonarQube for continuous inspection. Contributed to Jenkins setup for efficient build and deployment automation.

- Proficient in Android app development using MVVM architecture; optimized View Models for efficient network call handling- Leveraged Kotlin Coroutines to enhance app performance through concurrent operations- Collaborated in cross-functional teams, leading one-on-one meetings, code reviews, and supporting team growth- Engaged in Agile ceremonies (stand-ups, demos, retrospectives) to monitor and drive project progress- Mentored junior team members, integrated third-party libraries, and enhanced code robustness via bug fixes and refactoring- Practiced Test-Driven Development (TDD) with JUnit4 and Robolectric for reliable codebase- Experience with Visual Studio, .NET Core; integrated Google Maps, Geocoder, and Location Services for user assistance- Improved backend efficiency in Agile environment using Retrofit and GSON- Developed adaptable UIs, optimized Kotlin algorithms, and implemented debounce functions for efficient API calls- Conducted extensive UI testing across multiple devices for robust application performance- Adapted to diverse team sizes; innovated solutions for memory/thread safety- Led feature development (e.g., Cost Estimation Search) and employed design patterns (Singleton, Factory) for structured codebase- Managed application analytics tags, implemented advanced filtering, ensured thread safety using LeakCanary- Integrated multimedia content efficiently utilizing Glide and Exoplayer