Aleksander Jurkowski
Software Engineer at Citadel
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolAleksander Jurkowski is a systems-focused software engineer with six years of professional experience building high-performance infrastructure and developer tooling. He has worked on the core of Google's build system (Bazel) and contributed backend improvements—tests, dependency handling, metrics, and error resilience—demonstrating expertise in scalable build and automation systems. Skilled in C/C++, Linux kernel and synchronization primitives, plus a broad polyglot background (Java, Python, PHP, JavaScript, Perl, Haskell), he bridges low-level performance tuning with higher-level service development. His career spans quant and platform engineering roles at Two Sigma and Microsoft and currently continues at Citadel, showing comfort in both research-driven and production-critical environments. With an academic foundation from the University of Warsaw, he pairs compiler- and systems-level knowledge with practical networking and database experience. An under-the-radar strength is his track record of small but impactful open-source changes that improve observability and robustness in widely used infrastructure.
6 years of coding experience
12 years of employment as a software developer
Masters degree Computer science, Masters degree Computer science at University of Warsaw
Github Skills (8)
javas10
build-system10
java10
testing9
debug9
debugging9
software-quality8
performance-optimization8
Programming languages (1)
Github contributions (5)
bazelbuild/bazel
Aug 2019 - Jan 2023
a fast, scalable, multi-language and extensible build system
Role in this project:
Back-end Developer
Back-end DeveloperContributions:109 reviews, 238 commits, 18 PRs in 3 years 5 months
Contributions summary:Aleksander made several code changes to enhance the Bazel build system, including fixing a typo in the Javadoc, adding the name of the spawn runner to the component metrics, and introducing new methods for directory manipulation. They also refactored the system to improve dependency handling and implemented new tests, and introduced improved error handling. These contributions indicate a focus on core build system functionality and performance.
scalablecorrectbazelmulti-languagebuild-system
alexjski/bazel
Aug 2020 - May 2022
a fast, scalable, multi-language and extensible build system
Contributions:23 pushes, 16 branches in 1 year 9 months
scalablebazelmulti-languagebuild-systemextensible
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