Paweł Dziepak
Software Developer at XTX Markets
London, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolPaweł Dziepak is a software developer with 14 years of experience specializing in low-level, high-performance systems and memory management. Based in London, he has worked at ScyllaDB and XTX Markets, contributing to production-grade server frameworks and trading infrastructure. His open-source work includes substantive contributions to OSv, Haiku, and the Seastar framework—improving ELF loader permissions, NFS4 filesystem functionality, and memory/thread handling in performance-critical code. Paweł brings deep expertise in debugging, allocation alignment, and exception safety, often adding tracepoints and tooling to make complex systems more observable. He pairs academic foundations from the University of Wrocław with practical experience shipping robust back-end features in demanding environments. A detail-oriented engineer, he frequently focuses on memory and security subtleties that quietly improve reliability at scale.
14 years of coding experience
4 years of employment as a software developer
Bachelor’s Degree, Computer Science, Bachelor’s Degree, Computer Science at University of Wrocław
Polish, English
Stackoverflow
2,072reputation
99kreached
23answers
0questions
x86
top-5%
assembly
top-5%
linux
top-5%
Github Skills (42)
debugging10
debug10
filesystem10
c-language10
multithreading10
memory-management10
networking10
seastar10
thread10
hyper-threading10
network-protocol10
cplus10
elf10
threaded10
cpp10
Programming languages (6)
Github contributions (5)
haiku/haiku
Apr 2012 - Mar 2015
The Haiku operating system. (Pull requests will be ignored; patches may be sent to https://review.haiku-os.org).
Role in this project:
Back-end Developer
Back-end DeveloperContributions:750 commits in 2 years 11 months
Contributions summary:Paweł contributed significantly to the NFS4 filesystem implementation for Haiku, focusing on core functionality. Their work included adding and enhancing features, such as adding close() and free_cookie() hooks, allowing open() operations on directories, and integrating functionality to support open on directories. The user's commits demonstrate a focus on enhancing the functionality of the core NFS4 filesystem module.
kernelhaiku-osoperating-systemhaikulinux
scylladb/seastar
Mar 2015 - May 2019
High performance server-side application framework
Role in this project:Back-end Developer
Back-end DeveloperContributions:142 commits, 28 pushes, 2 tags in 4 years 1 month
Contributions summary:Paweł primarily contributed to the memory management and thread handling aspects of the Seastar framework. Their work included fixing memory trimming issues, improving allocation alignment, and enhancing exception safety in core functionalities. The user also made contributions to the RPC and file stream implementations, by improving code robustness and adding features such as dynamic read-ahead. Furthermore, the user demonstrated proficiency in system-level programming and optimization.
seastarc-plus-plusdpdkframeworkperformance
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