Chris is available for hire
Hire ChrisChris Powell
Verified Expert in Engineering
Coroutines Developer
Location
Wake Forest, NC, United States
Toptal Member Since
August 30, 2019
Chris is an experienced Android developer that has delivered quality applications across multiple industries. He has nearly 15 years of experience and holds a Master of Science degree in Computer Science from New York University. He primarily uses Kotlin, Android SDK, JUnit, RxJava, and MVVM.
Portfolio
Education Software Client
Android, Kotlin, Java, Automated Testing, Collaboration, Coroutines
VPN Software Client
Android, Java
Validic
Model View ViewModel (MVVM), Kotlin, Android, Android Studio
Experience
Availability
Full-time
Preferred Environment
Git, Android Studio
The most amazing...
...thing is making a seamless mobile experience.
Work Experience
Android Developer
2023 - 2023
Education Software Client
- Developed new features to support their classroom collaboration application.
- Tracked and fixed bugs reported by customers to be released before their busy season.
- Implemented UI/UX enhancements to better support the vision of the product team.
Technologies: Android, Kotlin, Java, Automated Testing, Collaboration, Coroutines
Android Developer
2020 - 2022
VPN Software Client
- Developed new features to support ongoing initiatives for a VPN application.
- Verified and fixed bugs that were identified by clients.
- Identified and remediated issues found by Spotbugs.
- Pinpointed and remediated issues found by Fortify scans.
Technologies: Android, Java
Senior Software Developer
2018 - 2018
Validic
- Performed bug fixes and enhancements to a diabetes management application.
- Migrated the application to use Room.
- Implemented dependency injection using Dagger2.
Technologies: Model View ViewModel (MVVM), Kotlin, Android, Android Studio
Senior Software Developer
2016 - 2017
TouchCare
- Migrated the telemedicine application to use standard 3rd party libraries (Retrofit, Dagger2, and RxJava).
- Worked with the design team to update the telemedicine application UI to follow the Material Design Guidelines.
- Converted the application from Java to Kotlin.
- Developed a new healthcare application in Kotlin.
Technologies: Model View ViewModel (MVVM), Kotlin, Java, Android, Android Studio
Senior Software Developer
2015 - 2016
Wickr
- Developed features to support the initial launch of the enterprise Android application.
- Maintained and added features to the consumer Android application.
Technologies: Java, Android, Android Studio
Software Engineer
2005 - 2010
ChargeAnywhere
- Designed and developed mobile payment application for iOS.
- Designed and developed mobile application for Android.
- Remediated PCI audit findings.
- Interfaced with Bluetooth payment peripherals (swiper, pin pad, and chip and pin).
- Developed an android library allow third party integration to the payment gateway.
Technologies: Android, Java, iOS, Objective-C, C++
Experience
TouchCare
I updated the existing telemedicine application to use standard libraries and implemented a material design UI. I also developed a new health advocacy application in Kotlin and utilized Firebase.
Validic
I updated the existing database solution to Room in our diabetes management application. Implemented dependency injection using Dagger2.
Skills
Languages
Java, Kotlin, C++, Objective-C, Swift, SQL
Frameworks
Dagger 2, Android SDK, JUnit, Espresso
Tools
Android Studio, Android Jetpack, Git
Platforms
Android, iOS, Bitrise
Libraries/APIs
RxJava 2, Retrofit 2, Firebase Android SDK
Paradigms
Model View ViewModel (MVVM), Automated Testing
Other
Coroutines, Collaboration
Education
2008 - 2010
Master of Science Degree in Computer Science
New York University - New York, NY
1997 - 2001
Bachelor of Science Degree in Computer Engineering
Virginia Polytechnic Institute and State University - Blacksburg, VA
Collaboration That Works
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