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Ruonan Pi

@ruonanpi

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Android Mobile Developer building scalable enterprise apps with Kotlin, Jetpack Compose, and MVVM architecture.

United States

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What I'm looking for

I’m looking to build high-impact mobile products for enterprise teams—owning architecture, CI/CD, and production reliability. I want to deliver features like offline sync, deep-links, and APIs with clean MVVM structure and strong monitoring.

I’m an Android Mobile Developer with extensive experience building scalable, maintainable applications for enterprise-level platforms. At PAYCOM PAYROLL LLC, I led multiple projects using MVVM (clean architecture), Jetpack Compose, Repository Pattern, UseCases, and Hilt to deliver maintainable, testable codebases.

I also design CI / CD pipelines integrated with JFrog Artifactory and automated build-status and Jira updates, helping streamline build automation and release tracking for QA teams. I’ve implemented offline syncing with WorkManager, push notification workflows, deep-link routing, RESTful APIs, third-party SDK integrations (e.g., Veryfi), and used Firebase Crashlytics, Splunk, and LeakCanary to improve production reliability and performance.

Experience

Work history, roles, and key accomplishments

Android Mobile Developer

Paycom Payroll LLC

Jan 2022 - Jan 2026 (4 years)

Led multiple scalable enterprise Android projects using MVVM clean architecture, Jetpack Compose, repository/use-case patterns, and Hilt dependency injection. Built CI/CD pipelines integrated with JFrog Artifactory and automated QA/release tracking via Confluence and Jira APIs.

Kotlin Jetpack Compose MVVM Architecture Hilt WorkManager Retrofit CI CD JFrog Artifactory Jira Firebase Crashlytics

Android Mobile Developer

Balon Corporation

Jan 2020 - Jan 2022 (2 years)

Designed and developed the Zebra ScanGun Android application for internal inventory tracking and order shipping systems. Built UI layouts in XML with Kotlin fragments, implemented app widget displays, and performed QA testing and debugging to ensure app reliability.

Kotlin Android UI Fragments Testing Debugging Android Development

Backend Software Developer

Axxess

Jan 2019 - Jan 2020 (1 year)

Developed hospice agency software for managing patient lifecycle, scheduling, and analytics across financial/clinical/patient data. Implemented RESTful APIs with AutoMapper and Entity Framework, added SignalR real-time messaging, and created unit tests and LINQ queries for reporting.

.NET C#Entity Framework RESTful APIs AutoMapper LINQ SignalR Unit Testing

Graduate Research Assistant

University of Oklahoma

Jan 2016 - Jan 2018 (2 years)

Assisted a professor with research by writing code to implement algorithms described in academic papers. Supported research execution through collaboration and code development.

Algorithm Development Research Code Coding Collaboration Paper To Code Translation

Android Mobile Developer

Riis LLC

Jan 2022 - Present (4 years 3 months)

Designed and built the Mapware Fly Android app in Kotlin using MVVM to support drone flight control and image capture workflows. Implemented real-time updates with LiveData, integrated backend APIs with Retrofit, stored offline data with Room, and added unit tests with JUnit/Mockito.

Kotlin MVVM LiveData ROOM Retrofit Unit Testing Mockito Junit

Backend Web Developer

NamePromo

Jan 2020 - Present (6 years 3 months)

Built a NamePromo website using the Laravel framework to provide real-time stock information. Implemented PHP web scrapers using regular expressions to detect product stock availability across multiple stores and managed a Discord community for user requests.

Laravel PHP Web Scraping Data Extraction Backend Development

Graduate Teaching Assistant

University of Oklahoma

Jan 2018 - Present (8 years 3 months)

Assisted students by answering questions and helping deepen understanding of discrete mathematics course material. Supported learning through clear explanations and course assistance.

Problem Solving