Scott Mansell
Open Source Software Developer at *hidden company name*
Canterbury, New Zealand
Summary
🤩
Rockstar🎓
Top SchoolScott Mansell is an open source software developer based in Canterbury, New Zealand, with 16 years of experience focused on low-level systems and embedded software. He contributes to high-profile projects like FEX-Emu (fast usermode x86/x86-64 emulation on Arm64) and AsahiLinux's m1n1, where he has implemented core emulation behaviors, Unified Address Translation, and GPU tracing for Apple Silicon. His work sits at the intersection of performance optimization, instruction-level emulation, and boot/firmware reverse engineering, demonstrating deep familiarity with ARMv8 memory management and system-call semantics. Scott has balanced roles in consulting and R&D, shipping production embedded systems and open-source tooling while maintaining a research-minded approach to debugging and tracing complex hardware/software interactions. Colleagues can rely on him for pragmatic refactors that yield measurable performance gains and for turning opaque low-level behaviors into testable, maintainable code.
16 years of coding experience
4 years of employment as a software developer
Computer Science, Computer Science at University of Canterbury
Github Skills (22)
bootloader10
assembly10
c-language10
apple-silicon10
system-calls10
u-boot10
sys10
assembler10
boot10
loader10
arm10
embedded10
reverse-engineering10
cprogramming-language10
emulation10
Programming languages (12)
Github contributions (5)
FEX-Emu/FEX
Oct 2019 - Sep 2021
A fast usermode x86 and x86-64 emulator for Arm64 Linux
Role in this project:
Back-end Developer
Back-end DeveloperContributions:160 reviews, 168 commits, 66 PRs in 1 year 11 months
Contributions summary:Scott primarily contributed to the FEX-Emu project by implementing and enhancing low-level system emulation features. They focused on improving the emulation of x86 and x86-64 instructions, particularly those related to control-flow, flag handling, and system calls (like `getcwd` and `lseek`). Furthermore, the user implemented and refactored code related to performance improvements and code optimizations within the IR system. This indicates a focus on low-level system interaction and core emulation functionality.
capstonemuslcppemulatorarmv8
AsahiLinux/m1n1
Feb 2022 - Mar 2022
A bootloader and experimentation playground for Apple Silicon
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:11 commits, 1 comment in 1 month
Contributions summary:Scott primarily focused on developing and implementing low-level system components related to Apple Silicon boot processes within the `m1n1` project. Their work includes implementing UAT (Unified Address Translation) functionality, which is crucial for memory management and addressing in ARMv8 systems, as well as tracing and debugging GPU activity. This involved adding tracing capabilities for the AGX GPU, including work submission, and implementing a register monitor for debugging and analysis. These contributions are essential for understanding and reverse engineering the boot process.
experimentationsiliconbazelapple-siliconbootloader
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