Kris Jusiak
Lead Software Engineer at Citadel Securities
United States
Summary
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Rockstar🎓
Top SchoolKris Jusiak is a Lead Software Engineer with 16 years of experience building high-performance systems in C++26, Python, and Rust, currently driving technical excellence at Citadel Securities. He blends low-level x86-64 performance tuning with eXtreme Programming practices (TDD/BDD) to deliver robust, production-grade software for latency-sensitive domains. Kris has deep experience in quantitative and trading infrastructure from multi-year roles at Quantlab and LSEG, and maintains a long-running presence in open source—contributing to Boost and leading projects since 2012. Notably, he enhanced a widely used C++ state machine library to support event-less actions, illustrating his knack for pragmatic improvements to core tooling. He holds an MSc in Software Engineering from Wrocław University of Science and Technology and often pairs systems-level optimization with rigorous testing discipline.
16 years of coding experience
15 years of employment as a software developer
MSc Computer Science Software Engineering, MSc Computer Science Software Engineering at Wrocław University of Science and Technology
English, German, Polish
Github Skills (6)
sml10
metaprogramming10
c-language10
cprogramming-language10
state-machine10
design-patterns9
Programming languages (8)
Github contributions (5)
boost-ext/sml
Dec 2015 - Sep 2022
C++14 State Machine library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 releases, 11 reviews, 888 commits in 6 years 10 months
Contributions summary:Kris contributed to the C++14 State Machine library, boosting its functionality by supporting actions without events. The changes involve modifications to the msm.hpp and msm.cpp files, specifically adding support for `otherwise` and event handling, as well as providing example code. The user's work is centered around enhancements to the library's core functionality.
state-machinemetaprogrammingdesign-patterns
kris-jusiak/sml
Feb 2018 - Mar 2024
[Boost].SML: C++14 State Machine Library
Contributions:244 pushes, 107 branches in 6 years 1 month
state-machine
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