James Calligeros
Team Lead Solutions Architect at Asahi Linux
Queensland, Australia
Summary
🤩
Rockstar🎓
Top SchoolJames Calligeros is a Team Lead Solutions Architect based in Queensland, Australia with five years of professional experience bridging systems architecture, embedded Linux development, and ITSM integrations. He leads design and delivery of Ivanti Neurons–based ITSM solutions while mentoring consultants and owning secure, self-hosted deployments that blend JavaScript, Python and PowerShell. As an active Asahi Linux board member and engineer, he reverse-engineers Apple Silicon hardware—contributing SPI tracers, kernel drivers and userspace audio DSP work for a high-profile open-source Apple Silicon project. His background in biomedical science and years running live-production AV operations give him an unusual mix of systems thinking, hardware debugging skills and real-world reliability practices. Known for pragmatic problem solving, he combines deep low-level technical craft with customer-focused architecture to turn opaque platform constraints into maintainable solutions.
5 years of coding experience
5 years of employment as a software developer
Bachelor of Biomedical Science, Anatomy and Physiology, Bachelor of Biomedical Science, Anatomy and Physiology at QUT (Queensland University of Technology)Bachelor of Science - BS, Biomedical Science, Bachelor of Science - BS, Biomedical Science at The University of Queensland
Github Skills (14)
embedded10
serial-communication10
reverse-engineering10
spi10
sys10
python10
apple-silicon10
boot9
bootloader9
u-boot9
assembly8
arm8
armasm8
assembler8
Programming languages (9)
Github contributions (5)
AsahiLinux/m1n1
Jun 2022 - Jul 2022
A bootloader and experimentation playground for Apple Silicon
Role in this project:
Embedded Systems Engineer / Reverse Engineer
Embedded Systems Engineer / Reverse EngineerContributions:4 reviews, 5 commits, 12 PRs in 1 month
Contributions summary:James primarily focused on reverse engineering and understanding the functionality of the TouchID sensor ("Mesa") on Apple Silicon devices. They developed Python scripts for tracing communication on the SPI bus, particularly focusing on messages exchanged between the sensor and the system. The contributions include adding a tracer, renaming a message dump, and tidying the output of tracing tools to gather more information about the sensor's operation and data transfers. They also worked on injecting the serial number into the FDT.
apple-siliconbootloader
AsahiLinux/asahi-audio
Mar 2022 - Jan 2023
Userspace audio for Asahi Linux
Contributions:62 commits, 15 PRs, 137 pushes in 10 months
audiolinuxuserspace
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