Kostiantyn Kostiuk
Principal Software Engineer at Red Hat
Vinnytsia, Vinnytsia Oblast, Ukraine
Summary
🤩
Rockstar🎓
Top SchoolKostiantyn Kostiuk is a Principal Software Engineer with six years of hands-on experience in system software, virtualization, and driver development, now leading efforts at Red Hat. He is a QEMU sub-maintainer and an active contributor to projects like virtio-win and the QEMU Guest Agent, routinely bridging Windows and Linux ecosystems through driver, CI, and distro work. Kostiantyn built and maintained HCK-CI automation for Windows driver certification—addressing Secure Boot, IOMMU, and SVVP requirements—and has deep debugging expertise in complex Windows guest issues. Comfortable across C/C++, Ruby, PowerShell, and Python, he pairs low-level engineering with CI/build and release automation to keep virtualization stacks reliable. Based in Vinnytsia, Ukraine, he combines open-source stewardship with practical engineering, including clever integrations like using virtio-sock for SSH to Windows VMs.
6 years of coding experience
7 years of employment as a software developer
Master's degree, Computer Software Engineering, Master's degree, Computer Software Engineering at Vinnytsia National Technical University
Github Skills (17)
c-language10
qemu10
wp-api10
c1110
winapi10
c1710
code-analysis10
driver10
build-automation10
ws-api10
cprogramming-language10
kvm9
batchfile9
virtualization9
emulation9
Programming languages (12)
Github contributions (5)
virtio-win/kvm-guest-drivers-windows
Apr 2021 - Nov 2022
Windows paravirtualized drivers for QEMU\KVM
Role in this project:
Backend & Build/Release Engineer
Backend & Build/Release EngineerContributions:95 reviews, 118 commits, 136 PRs in 1 year 6 months
Contributions summary:Kostiantyn primarily contributed to build system enhancements and driver-related bug fixes within the Windows KVM guest drivers repository. Their work includes adding CodeQL support for static analysis, integrating modern SDV mode, and fixing issues related to request handling and code analysis warnings, particularly for EWDK 1903 and Windows 11 EWDK environments. They also made changes to various driver components, including `netkvm`, `viorng`, `viofs`, `vioserial`, and `balloon` to address suspend/cancelation behavior. Additionally, the user updated signing tools and build scripts.
hyper-vc-plus-plusvirtualizationvirtio-winguest
amnis-invictus/CodeLabs
Jun 2022 - Aug 2024
Contributions:175 reviews, 250 PRs, 295 pushes in 2 years 2 months
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