Alex O'brien
Software Engineer at IMC Trading
Sydney, New South Wales, Australia
Summary
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Rockstar🎓
Top SchoolAlex O'brien is a software engineer based in Sydney with 10 years' experience focused on low-level, high-performance systems and a strong background in C/C++ and Rust. Currently at IMC Trading, he works on nanosecond-sensitive infrastructure, bringing rigorous systems design and performance tuning to production trading environments. His past work includes modernizing legacy embedded web server codebases and tutoring computer systems, reflecting both practical security-minded engineering and an ability to explain complex concepts. Alex favors robust, well-engineered solutions and pursues projects that push the boundaries of scale and latency. He pairs academic grounding from the University of Melbourne with hands-on internship-to-fulltime progression at a top trading firm, and maintains an active GitHub portfolio showcasing system-level projects. Notably, his experience spans security research, code modernization, and real-time C++ systems while increasingly using Rust as his language of choice.
10 years of coding experience
1 year of employment as a software developer
High School Diploma, ATAR - 99.1, High School Diploma, ATAR - 99.1 at John Monash Science SchoolThe University of Melbourne
Spanish
Stackoverflow
469reputation
52kreached
0answers
8questions
Github Skills (67)
nix10
operating-system10
unix10
io-uring10
linux10
browser10
rust10
kernel10
nixos9
scalable9
compiler9
haiku9
http9
vim9
c999
Programming languages (12)
Github contributions (5)
3541/dot
Dec 2021 - Jul 2026
Contributions:180 pushes, 1 branch in 4 years 7 months
3541/liba3
Nov 2020 - Jul 2022
Lightweight C utility library.
Contributions:23 releases, 514 commits, 57 PRs in 1 year 8 months
utilityutility-libraryc99c
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