Lukas Sismis
Senior Software Engineer at Open Information Security Foundation
Czechia
Summary
🤩
Rockstar🎓
Top SchoolLukas Sismis is a Senior Software Engineer with 7 years of experience specializing in high-performance networking and security software, currently working across industry and open-source projects in Czechia. As a PhD student and researcher at Brno University of Technology and CESNET, he leads Suricata and DPDK prefilter development to push packet-processing throughput and builds performance-measuring test environments. He contributed significant DPDK integration and RSS support to the widely used Suricata IDS/IPS project, fixing critical memory and packet-counting issues for real-world NICs. Lukas pairs low-level C and DPDK expertise with Python-based tooling and web/QA experience from embedded systems work, enabling end-to-end solutions from research prototypes to production deployments. His background shows a rare combination of academic research and hands-on systems engineering that improves both throughput and reliability in network security stacks.
7 years of coding experience
1 year of employment as a software developer
Faculty of Information Technologies, Faculty of Information Technologies at Brno University of TechnologyBachelor's degree, Information Technology, Bachelor's degree, Information Technology at Instituto Politécnico do Porto
English, Russian
Stackoverflow
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Github Skills (18)
c1110
c1710
dpdk10
network-security10
intrusion-detection9
ids9
performance-tuning8
github8
git-repository8
cybersecurity8
git8
system-programming8
ips7
network-monitoring7
msoffice6
Programming languages (4)
Github contributions (5)
OISF/suricata
Oct 2020 - May 2022
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.
Role in this project:
Back-end & Security Engineer
Back-end & Security EngineerContributions:348 reviews, 15 commits, 351 PRs in 1 year 7 months
Contributions summary:Lukas primarily contributed to the DPDK (Data Plane Development Kit) integration within the Suricata network intrusion detection system. Their work involved adding initial support for DPDK runmode, including configuration, EAL initialization, and worker thread management. They also implemented RSS (Receive Side Scaling) support for various Intel network interface cards (NICs) and addressed memory leaks related to bypass functionality. Additionally, they modified the MTU setting for compatibility with newer DPDK APIs and fixed counters for received packets.
git-repositorynsmipssecurityids
lukashino/suricata
Oct 2020 - Nov 2022
Suricata git repository maintained by the OISF
Contributions:15 reviews, 170 commits, 10 PRs in 2 years 1 month
git-repositoryversion-controlsubversionsecuritysuricata
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