Brad (Hyeongu) Kwon

- Built and maintained multiple Flutter mobile apps in production, ensuring reliable user experiences and stable delivery. - Worked closely with engineers and cross-functional teams to deliver reliable mobile applications and improve engineering workflows and release quality. - Introduced a scalable, modular mono-repo architecture with melos-managed internal packages, enabling shared components across multiple apps, parallel development, and streamlined dependency management.

- Developed and delivered production Flutter mobile apps for wellness and wearable use cases, used by 100k+ users globally. - Implemented SSO authentication using OAuth 2.0 and OpenID Connect. - Built BLE-based communication layers to support reliable wearable device integration. Skills: Flutter, Dart, BLoC, GitLab, Firebase, Bluetooth (BLE), SQLite, Bitrise, Jira, Confluence, TypeScript, Postman

- Developed and delivered Xamarin-based mobile brain training game apps for Android and iOS, used by 20M+ global users. - Improved app stability, achieving crash-free rates of 99.8% on Android and 99.7% on iOS. - Worked within a Scrum-based development process, participating in sprint planning, estimation, and retrospectives. - Contributed to the launch of a CE-certified, regulated digital medical application (DiGA), NeuroNation MED.

- Developed a location- and proximity-based Xamarin Android app featuring indoor navigation, beacons, text-to-speech, and GPS, designed to support accessibility use cases. - Developed a Xamarin Android app, implementing customized Mapbox navigation and GPS-based routing features for guided running use cases. Skills: Xamarin, C#, .NET, Java, Realm, Bluetooth (BLE), Mapbox, Bitbucket, Azure

- Developed and delivered in-house merchandising and supply chain management (SCM) systems implemented as .NET desktop applications. - Developed an internal store intranet web application using ASP.NET MVC 5, Bootstrap, and jQuery. Skills: .NET, C#, ASP.NET MVC, WinForms (MVP pattern), jQuery, AJAX, JSON, Bootstrap, VB, Crystal Reports, MS SQL Server

Delivered enterprise software solutions for clients across finance, retail, construction, aviation, and public sectors.

Developed and delivered in-house merchandising and supply chain management (SCM) systems implemented as Visual Basic desktop applications.

Developed and delivered in-house merchandising and supply chain management (SCM) systems implemented as Visual Basic desktop applications.

Software Programming