Oleksii Mandrychenko
Senior Principal Software Engineer at Fortinet
Sunnyvale, California, United States
Summary
👤
Senior🎓
Top SchoolOleksii Mandrychenko is a Senior Principal Software Engineer with nearly two decades of experience designing and delivering secure, large-scale distributed systems for cloud and hybrid environments. Currently leading platform and security engineering for FortiSIEM at Fortinet, he combines deep cybersecurity expertise with hands-on systems programming in C/C++ and platform work in Java/C# across high-throughput analytics, real-time event processing, and ML pipelines. He has driven products deployed to ~100k endpoints, authored four patents and multiple publications, and repeatedly found high‑severity vulnerabilities while coordinating cross-vendor responses. A pragmatic technical leader and mentor, he has managed teams of up to 14 engineers, rebuilt legacy components for stability and scalability, and contributed to internal education reaching thousands of peers. His PhD work on complexity assessment and experience fixing kernel‑level resource issues reflect a rare blend of theoretical rigor and low‑level engineering.
14 years of coding experience
10 years of employment as a software developer
PhD, Methodology to assess static and dynamic complexity of physical activity pattern, PhD, Methodology to assess static and dynamic complexity of physical activity pattern at Glasgow Caledonian UniversityMSc, Software Engineering, MSc, Software Engineering at V. N. Karazin Kharkiv National University
Spanish, English, Ukrainian, Russian
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Github Skills (137)
lz410
multithreading10
compression-algorithm10
windows10
cmake10
vpc10
asp-net10
visual-studio10
dump10
compression10
cpp10
architecture10
dotnet10
zlib10
wcf10
Programming languages (15)
Github contributions (5)
o-mdr/pa-pattern-complexity
May 2019 - Jun 2023
Contributions:1 release, 8 PRs, 60 pushes in 4 years 1 month
oleksii-mdr/WCFServiceHosting
Sep 2011 - Jul 2015
Contributions:5 commits in 3 years 11 months
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