Greyson Parrelli
Boston, Massachusetts, United States
Summary
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RockstarGreyson Parrelli is an Android developer with eight years of experience building resilient, user-focused mobile apps at top-tier companies including Signal, Snap, Google, and Yahoo. He specializes in Android, Java and modern web technologies, and has hands-on experience integrating media libraries like ExoPlayer and Glide to improve UI/UX and stability. At Signal he contributed to both the app and its Java service library, shipping features from contact discovery and disappearing messages to story enhancements and linked-device sync. Greyson’s background in academic research developing assistive Android apps for autistic youths adds a thoughtful usability perspective that informs his production work. Based in Somerville, MA, he combines large-product experience with practical open-source contributions to secure messaging infrastructure.
8 years of coding experience
Github Skills (17)
kotlin10
debugging10
debug10
messaging10
apidoc10
android-sdk10
java10
javas10
api10
android10
signal-protocol10
android-ui10
protocol-buffers9
cryptography9
glidejs9
Programming languages (8)
Github contributions (5)
signalapp/Signal-Android
Mar 2018 - Jan 2023
A private messenger for Android.
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:72 releases, 65 reviews, 3524 commits in 4 years 11 months
Contributions summary:Greyson's contributions focused on enhancing the Signal-Android application's functionality and stability. Their work included adding logging to improve debugging, addressing UI issues in the media preview, and fixing crashes related to various lifecycle-related issues. The user demonstrated a good understanding of Android UI components, including those for image editing, as well as the integration of third-party libraries like ExoPlayer and Glide. Additionally, they worked on enhancing the features of stories within the Signal app.
signalandroidkotlinmessengerjava
signalapp/libsignal-service-java
Jul 2018 - Nov 2019
A Java/Android library for communicating with the Signal messaging service.
Role in this project:Back-end Developer
Back-end DeveloperContributions:37 commits, 3 PRs, 23 pushes in 1 year 4 months
Contributions summary:Greyson primarily contributed to the development of the Signal messaging service Java/Android library. The commits focused on implementing features related to contact discovery, including the creation of requests, processing of responses, and error reporting. Furthermore, the user integrated support for one-off disappearing messages and stickers. In addition, the user made adjustments and updates to number validation checks and also worked on enhancing sync capabilities by incorporating link previews and additional features for linked devices.
signaljava-androidandroid-libraryandroidmessaging
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