John Sietsma
Group Lead - Software And Digital Solutions at Advitech
Newcastle-Maitland, New South Wales, Australia
Summary
👤
Senior🎓
Top SchoolJohn Sietsma is a seasoned software leader with 14 years of experience specializing in XR, computer vision, and scalable data pipelines, now leading Software and Digital Solutions at Advitech from Newcastle, Australia. He combines hands-on engineering—shipped AR/VR systems, custom OpenGL engines, shaders and Unity ARFoundation contributions—with strategic delivery of cloud CI/CD and multi-customer data platforms. His recent contract work produced practical ML/vision proofs-of-concept (player tracking, jump measurement, animal pose) implemented across Python, C#, .NET and Unity, showing an ability to move prototypes into usable tools. At Cordel he architected asset-tracking algorithms, point-cloud tooling and Azure/AWS storage that scaled product suites and led a multidisciplinary team of six. A former Unity field engineer and games/education developer, he pairs deep graphics and real-time experience with a people-first leadership style. Notably, he contributed a feathered-plane ARFoundation sample that improved visual clarity through shader and scene work—an example of blending polish with technical rigor.
14 years of coding experience
19 years of employment as a software developer
Workplace Training and Assessment, Training, Certificate IV, Workplace Training and Assessment, Training, Certificate IV at Victoria UniversityMaster of Technology (Intelligent Systems), Master of Technology (Intelligent Systems) at RMIT University
Stackoverflow
48reputation
5kreached
3answers
1question
Github Skills (10)
game-development10
csharp10
shader10
dotnet-core10
unity3d10
ui-design7
ios6
azure6
unity-game-engine6
plugin6
Programming languages (3)
Github contributions (5)
Unity-Technologies/arfoundation-samples
Jul 2018 - Aug 2018
Example content for Unity projects based on AR Foundation
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:6 commits, 10 PRs, 10 comments in 26 days
Contributions summary:John contributed to the development of a sample scene for AR Foundation, focusing on the visual representation of AR planes. They added a "feathered plane" sample, including shader modifications to control the appearance and transparency of the plane's edges. The commits demonstrate changes to the Unity scene, C# scripts, and shaders, indicating a focus on both the visual and functional aspects of the AR experience. The user made code adjustments to improve visual clarity and to match project coding conventions.
unity3dunityar-foundationfoundation
johnsietsma/PlayerMakerWindowsMixedReality
May 2017 - Aug 2017
Contributions:1 release, 25 commits, 19 pushes in 2 months
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