Joel Courtney
Chief Technology Officer at ACE Teknologi
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolJoel Courtney is a seasoned Chief Technology Officer and power & renewables engineer with 17 years of experience building technology-driven energy solutions from utility-scale smart grid projects to commercial SaaS platforms. Based in Sydney, he has co-founded and led multiple ventures including EnergyLink and Enosi Australia, transforming businesses by integrating data, analytics and automation to unlock value from energy assets. Joel blends hands-on engineering and product delivery—having overhauled operational tooling at Ausgrid and driven COzero’s pivot to a technology-first service model—with advisory work for government and startups. He contributes to open source (notably improving Ruby support in Google’s widely used Protocol Buffers), reflecting a pragmatic developer mindset alongside executive leadership. Outside work he balances technical curiosity with outdoor pursuits and creative hobbies, a sign of the practical, multidisciplinary perspective he brings to complex energy transitions.
17 years of coding experience
11 years of employment as a software developer
Manly High SchoolUNSW Sydney
English
Stackoverflow
89reputation
45kreached
11answers
1question
Github Skills (13)
ruby10
protobuffer10
protobuf10
marshalling10
protocol-buffers10
testing10
proto9
statistics6
amazon-ec26
amazon-web-services6
excel6
vba6
ruby-on-rails6
Programming languages (23)
Github contributions (5)
protocolbuffers/protobuf
Apr 2020 - Apr 2025
Protocol Buffers - Google's data interchange format
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 PR, 21 comments, 1 issue in 5 years
Contributions summary:Joel primarily focused on improving Ruby support within the protobuf library, particularly for `from_*` methods in well-known types. They added class methods and modified instance methods to properly handle `from_*` requests. The user also implemented and updated tests to verify the correctness of these changes. These updates improved the library's functionality and test coverage.
protocol-buffersprotobufprotocol-compilerprotobuf-runtimeprotoc
jufemaiz/testing-composite-primary-keys
Apr 2016 - Feb 2020
Contributions:5 PRs, 6 pushes, 3 branches in 3 years 11 months
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