Gary is available for hire
Hire GaryGary Barnett
Verified Expert in Engineering
Cloud Developer
Seattle, WA, United States
Toptal member since April 24, 2025
Bio
Gary is a seasoned professional with extensive IT knowledge and experience on the Apple platform since the first iPad's release. He has a proven record in developing successful loyalty and customer service and security, networking, and videography applications across various industries. Gary also has extensive experience with IT networking, operations, and management.
Portfolio
Johnson Controls
iOS, Android, C, C++, MacOS, SwiftUI, Cloud, Linux, Xcode, Java, Swift...
Tempered Networks
Java, Swift, Objective-C, C, C++, Linux, MacOS, Windows, Android, SwiftUI...
Gesto
Objective-C, Xcode, Linux, iBeacon, Amazon Web Services (AWS), Cloud, Java, iOS...
Experience
- Linux - 20 years
- iOS - 15 years
- Objective-C - 15 years
- Xcode - 15 years
- Cloud - 10 years
- C - 10 years
- Swift - 5 years
- MacOS - 5 years
Availability
Full-time
Preferred Environment
MacOS, Xcode, Linux, Swift, iOS, SwiftUI, AVFoundation, Mobile Development
The most amazing...
...solution I've developed are the Airwall agents, which enabled anyone to use a secure SDN on all their devices with a simple UI and little IT knowledge.
Work Experience
Staff Engineer
2022 - 2023
Johnson Controls
- Updated, maintained, and integrated Airwall VPN agents for MacOS, iOS, iPadOS, and Android platforms.
- Resolved issues and completed integrations at scale, with hundreds of thousands of end user devices managed.
- Integrated the Airwall platform with OpenBlue, which integrates and manages customer hardware deployments for Johnson Controls customers.
Technologies: iOS, Android, C, C++, MacOS, SwiftUI, Cloud, Linux, Xcode, Java, Swift, Objective-C, Windows, Identity & Access Management (IAM), Amazon Web Services (AWS), AVFoundation, Mobile Development, Mobile
Senior Software Engineer
2016 - 2022
Tempered Networks
- Popularized HIP zero-trust networking on iOS, Android, MacOS, and Windows.
- Led a team of three reports in keeping the apps updated, secure, and available for five years without significant security or other issues.
- Worked with large customers to ensure the product worked in their complex environments and made changes to the product to meet their needs.
Technologies: Java, Swift, Objective-C, C, C++, Linux, MacOS, Windows, Android, SwiftUI, Cloud, Xcode, iOS, Identity & Access Management (IAM), Amazon Web Services (AWS), AVFoundation, Mobile Development, Mobile
Developer
2014 - 2016
Gesto
- Created a line of mobile apps for the loyalty and point-of-sale space in restaurants and entertainment verticals.
- Led mobile development, targeting multiple platforms and contributing to most iOS code.
- Built a fully functional point-of-sale system delivered on iPads. The features included menus, ordering, payment, receipt printing, reports, and analytics.
- Developed a loyalty system and associated a guest app for customer use and an entertainment-vertical app for customer use at large venues. I leveraged AWS for the back end and iBeacon for localization.
Technologies: Objective-C, Xcode, Linux, iBeacon, Amazon Web Services (AWS), Cloud, Java, iOS, AVFoundation, Mobile Development, Mobile
Developer, Owner
2012 - 2014
Icefog Creations LLC
- Designed, developed, released, supported, and maintained FiLMiC Pro, an award-winning iOS universal video camera app, in collaboration with a movie director. Features included full API control, zoom, a web server, and customizable presets.
- Designed, developed, released, supported, and maintained Cleargait (B2B), a real-time video capture, analysis, and reporting tool used to customize gear for customers at trade shows, utilizing iPad, Apple TV, treadmill, and running scenes.
- Created FiLMiC Remote, providing full-feature remote camera control, preview, and file management over Wi-Fi and Bluetooth.
Technologies: C, C++, Objective-C, iOS, AVFoundation, Cloud, Xcode, Linux, Mobile Development, Mobile
Experience
Airwall
https://apps.apple.com/us/app/airwall/id1233852249A cross-platform VPN solution utilizing HIP to create a software-defined network with multi-factor authentication. Created Apple and Android agents, maintained and updated them over a seven-year period. Supported large and complex network deployments.
Phostera Camera, Director, and Streamer
https://github.com/gbcs/phosteraThese are three BSD-released Swift apps for capturing images and video on iOS and streaming them to YouTube. The apps allow for the direct use of multiple cameras at once and include the capability of combining numerous cameras and multi-camera data capture and management. Last released in 2024.
Cloud Capture
https://github.com/gbcs/CloudCaptureAn Objective-C iOS app that includes code for video editing, both still and video camera; fully implements camera API features as of release; remote control and publishing features. Last released in 2014.
Education
1989 - 1990
N/A in Electronics
University of Alaska - Anchorage
Certifications
JUNE 1992 - PRESENT
Novell Master CNE
Novell, Inc
Skills
Tools
Xcode
Languages
Objective-C, Swift, C, Java, C++, Python
Paradigms
Mobile Development
Platforms
iOS, Mobile, Linux, MacOS, Windows, Android, Amazon Web Services (AWS)
Frameworks
SwiftUI, UIKit
Other
Identity & Access Management (IAM), Cloud, iBeacon, AVFoundation, Electronics, IT Networking, IT Field Service
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