Gavin Henry
Founder At OneTalker Open Source Project at Software Heritage
Aberdeen City, Scotland, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolGavin Henry is a founder and seasoned software engineer with 17 years' experience building telecom and open-source systems, currently leading Ant Networks and the OneTalker AAC project he created for his son. He has deep hands-on expertise in VoIP, SIP stacks and systems programming across languages (Elixir, C, Rust, Perl) and has founded and exited companies including SureVoIP while maintaining active OSS leadership with OpenLDAP and OpenSIPS. Gavin combines product and infrastructure skills—shipping features from mobile UI improvements to RFC8599 support in SIP—and regularly contributes to projects that secure and scale communications. Beyond engineering, he serves as a Software Heritage ambassador and trustee for local charities, reflecting a commitment to open source, community stewardship and accessibility. An experienced podcast host and documentation lead, he brings rare breadth: from low-level protocol work to user-facing accessibility software.
16 years of coding experience
19 years of employment as a software developer
C Programming, C Programming at The University of ManchesterBEng(Hons) Electronics and Communications Engineering, BEng(Hons) Electronics and Communications Engineering at Robert Gordon UniversityEllon Academy
Stackoverflow
302reputation
37kreached
5answers
8questions
Github Skills (20)
flutter-apps10
ui-design10
voip10
sip10
sips10
flutter-game10
dart10
flutter10
testing9
webclient8
android8
ios8
clientside8
whatsapp6
pullrequest6
Programming languages (28)
Github contributions (5)
Pyozer/introduction_screen
Nov 2022 - Jan 2023
Add easily to your app an introduction screen to provide informations to new users
Role in this project:
Mobile Developer (Android/iOS)
Mobile Developer (Android/iOS)Contributions:10 releases, 2 reviews, 42 commits in 1 month
Contributions summary:Gavin primarily contributed to the user interface and functionality of the introduction screen. They addressed deprecated code, formatted the codebase, and added tests for key UI elements. Additionally, the user implemented features such as auto-scrolling and addressed an issue related to duration calculations, demonstrating a focus on refining user interaction and optimizing the application's behavior.
dart2dartandroidinformationsios
flutter-webrtc/dart-sip-ua
Sep 2019 - Sep 2020
A dart-lang version of the SIP UA stack.
Role in this project:Back-end Developer
Back-end DeveloperContributions:2 reviews, 9 commits, 5 PRs in 1 year
Contributions summary:Gavin primarily focused on enhancing the SIP UA stack's functionality by incorporating support for RFC8599, a standard related to push notifications. They added and then reverted changes related to extra headers and contact parameters for SIP REGISTER messages. Further work involved expanding contact URI parameters, adding and testing against a server supporting RFC8599. The commits also included adjustments to settings related to registration behavior, exposing new configuration options.
dartlangdartlangjssipsip
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