Christopher Kohlhoff
Chief Engineer at clearpool.io
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolChristopher Kohlhoff is a seasoned Chief Engineer based in Sydney with 20 years designing and shipping high-performance, low-latency networked systems across finance, trading, SCADA and mobile platforms. He brings deep C++ expertise and systems-level experience across Windows, Linux, Solaris and embedded/mobile stacks, having led real-time market systems at NASDAQ OMX and built middleware and FIX/FAST encoding for financial markets. As an independent consultant and founder he’s repeatedly solved scalability and protocol challenges, and today leads engineering at clearpool.io focusing on production-grade distributed services. An active open-source contributor, he’s made performance- and correctness-focused improvements to Boost.Asio and Boost.Beast—libraries widely used for asynchronous networking in C++—including atomic reference-counting and single-buffer optimizations that tangibly reduce overhead. Known for pragmatic architecture and low-level optimizations, he pairs academic grounding (MSc, BSc in Computer Science) with a track record of shipping complex, mission-critical systems.
20 years of coding experience
12 years of employment as a software developer
The University of SydneyMSc Computer Science, MSc Computer Science at University of Technology Sydney
Github Skills (28)
asynchronous10
c-language10
multithreading10
async10
http10
html-template10
python-templates10
software-quality10
networking10
code-templates10
http-server10
apptemplates10
socket10
performance-optimization10
asio10
Programming languages (6)
Github contributions (5)
chriskohlhoff/asio
Feb 2011 - Dec 2022
Asio C++ Library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2328 commits, 118 PRs, 861 pushes in 12 years
Contributions summary:Christopher primarily contributed to the Asio C++ Library by implementing improvements and bug fixes in core components. The user focused on enhancing traits evaluation, specifically by adding short-circuiting to prevent template instantiation issues. Furthermore, the user addressed minor issues like missing includes and warnings and used constraints on converting constructors, indicating a focus on code quality and performance optimization within the library's core functionalities.
cppc-librarycpp20c-plus-plusheader-only
boostorg/asio
Jun 2006 - Dec 2022
Boost.org asio module
Role in this project:Back-end Developer
Back-end DeveloperContributions:2133 commits, 59 PRs, 307 pushes in 16 years 8 months
Contributions summary:Christopher implemented memory ordering specification when reference counting with standard atomics, improving the performance and thread safety of the Boost.Asio module. The user also added a single-buffer optimization for send and receive operations, using send/recv system calls, enhancing performance by avoiding the overhead of sendmsg/recvmsg when dealing with a single buffer. They also made various code improvements to improve clarity and prevent unnecessary error code access.
asioboost
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