Valentyn Grygoriev
Senior System Administrator Software Developer
Ukraine
Summary
👤
Senior🎓
Top SchoolValentyn Grygoriev is a Senior System Administrator and Software Developer with over two decades in IT and 14 years focused on Java development. Based in Ukraine, he combines hands-on server and network administration (FreeBSD, Linux, Windows, HP, 3COM) with backend development across Java, Flex, Delphi, PHP and MySQL. He has provided long-term technical leadership at LLC “Sirius Extrusion,” evolving from system administrator to senior hybrid engineer responsible for both infrastructure and application delivery. His background in computer systems and networks gives him a strong systems-thinking approach to building resilient, maintainable solutions that bridge operations and development. Known for steady, practical execution rather than flashy releases, he brings deep institutional knowledge and cross-stack fluency that accelerates troubleshooting and continuous improvement.
9 years of coding experience
3 years of employment as a software developer
Engineer's (Specialist) degree, Computer systems and networks, Engineer's (Specialist) degree, Computer systems and networks at Khmelnitsky National UniversitySchool №16
English, Ukrainian, Російська
Stackoverflow
463reputation
56kreached
6answers
28questions
Github Skills (30)
network-tools10
continuous-integration10
vulnerability-scanners10
security-scanner10
api-client10
security-automation10
security10
security-testing10
api10
rest10
pentesting10
sast10
sdlc10
k8s10
server10
Programming languages (1)
Github contributions (5)
zigfridus/sechub
May 2022 - Mar 2024
SecHub - one central and easy way to use different security tools with one API/Client
Contributions:127 pushes, 29 branches in 1 year 10 months
api-clientapisecurity-toolssecurityinfosec
zigfridus/books
Jan 2019 - Jan 2019
Contributions:1 PR, 2 branches in 1 day
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