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Ko n s t a n t y n o v s k y i V a l e r i i
Chernihiv, Ukraine • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section)

Experienced Computer Engineer with background in troubleshooting, system administration and customer
services. Skilled in solving high urgent cases, managing IT systems and providing support to both customers and
colleagues. A team player who excels in high-pressure environments, delivering high-quality support while
enhancing system performance and customer satisfaction. Self-motivated, organized and able to work
independently to resolve challenges efficiently.

Experience
MAY 2025 – PRESENT
System Administrator | TANGRAM

Responsible for deploying, monitoring (LibreNMS, OpenNMS) and maintaining Linux-based servers; administering
WHM/cPanel hosting environments and using OpenMediaVault for backups; managing LIR functions – including IP
address requests, allocations and documentation in line with RIPE NCC policies); as well as investigating,
responding to abuse claims and customer service issues.

MAY 2023 – JAN 2025
System Administrator | VIVAT TRADING

Responsible for monitoring and maintaining IT infrastructure. I played a key role in migrating the company’s email
system from Roundcube and Postfix to Office 365, led the migration of several Linux-based servers, enhanced sites
monitoring with Grafana. In additional to these technical responsibilities, I provided customer assistance, resolved
and helped with different kinds of issues.

FEB 2020 – OCT 2022
Support Engineer | PortaOne

I was responsible for assisting customers with troubleshooting and resolving issues. This included addressing
problems with call quality, network connectivity and system configurations. I managed both routine support
requests and urgent, high-priority cases. As well, I worked rotating shifts to provide 24/7 support, responding to
customer needs during off-hours and ensuring uninterrupted service. My role required strong problem-solving
abilities, effective communications and the ability to prioritize urgent cases while maintaining a high level of
customer satisfaction.
Education
2020 - 2022
Bachelor of Cumputer Engineer | Chernihiv Polytechnic National University

2016 - 2020
Junior Specialist | Applied College of Transport and Computer Technology of Chernihiv Polytechnic National
University