Joshua Hand

Built mobile features for Amazon Flex app using Java and Kotlin with Android application architecture and optimized to reduce the time by 25% to complete deliveries. Designed layout using Jetpack Compose to easily build modern, responsive UIs with less code by 50% than traditional Android app. Implemented CI/CD pipelines using AWS CodePipeline and CodeDeploy to automate application deployment and testing processes. Collaborated with cross-functional teams to optimize app performance, reduce build times, and resolve build-related issues using Gradle build caching and modularization techniques. Integrated React Native libraries for use on both iOS and Android. Defined 50+ RESTful APIs using Python and implemented them in app via Retrofit with RxJava. Developed features as packages/libraries covered more than 90% by Junit4 tests. Worked closely with UX designers, resulting in a 30% increase in user engagement and 20% reduction in user errors.

Built mobile features for the Amazon Flex app using Java and Kotlin within a scalable Android architecture. Designed UIs with Jetpack Compose to deliver responsive interfaces, reducing delivery times by 25%. Implemented CI/CD pipelines using AWS CodePipeline and CodeDeploy to automate deployment and testing. Collaborated with cross-functional teams to optimize performance, reduce build times through Gradle caching and modularization, and integrated libraries built with React Native for cross-platform use. Defined 50+ RESTful APIs in Python and implemented them with Retrofit/RxJava to fetch and display JSON or XML data. Developed package/library components that contributed to over 90% of the codebase coverage by unit tests with JUnit4. Worked closely with UX designers to create an intuitive UI, resulting in higher user engagement and lower error rates.

Converted Java projects to Kotlin using MVVM and improved code maintainability. Resolved 20+ technical issues; developed 5+ features as reusable packages/libraries deployed via JFrog and updated per new Figma designs. Implemented responsive UI components and optimized performance with RecyclerView, Fragments, and AsyncTask. Set up critical app infrastructure including Dagger DI, push notification registration, and database initialization. Implemented a workflow for composing RESTful API calls with RxJava and Retrofit, data operations, and background processing, significantly reducing execution time. Led daily stand-ups with a 10-person team, improving alignment and efficiency by 20%.