Олексій

Oleksii Melnichuk
 Kyiv  [open contact info](look above in the "contact info" section)  [open contact info](look above in the "contact info" section)

Summary System Administrator with strong expertise in Linux server management, network security, and automation.
Skilled in maintaining high-availability systems and ensuring the uninterrupted operation of critical web
services.

Experience KNEDP DPS (State Tax Services) January 2024 – Present
System Administrator
Administration, optimization, and monitoring of Linux servers.
Configuration and maintenance of Apache and Nginx web servers to ensure service reliability and uptime.
Implementation and support of CMP, OCSP, and TCP services for continuous certificate validation.
Development and integration of web accessibility features for the KNEDP website: color schemes, font
resizing, reading line, enlarged cursor, and character spacing.
Infrastructure monitoring using Zabbix and Wazuh.
Database management and scripting in MySQL for automated reporting.
Network device administration, including Cisco ASA Firewall.

Education KNTU 2016 - 2021
Software engineering Master

Projects Crypto Match
 http://firstgame3inraw.s3-website.eu-north-1.amazonaws.com/
HTML, CSS, JavaScript
A simple but interactive browser-based game where players compete in a "three in a row" challenge.
Features intuitive UI, game restart logic, and real-time visual feedback.

Friends Chat App
 http://myfriendschat.s3-website.eu-north-1.amazonaws.com/
ReactJS, HTML, CSS, JavaScript
A lightweight real-time chat interface where users can exchange messages. Includes basic authentication
UI, message input, and chat window functionality for simulating user communication.

Skills Linux, Apache, Nginx, Zabbix, Wazuh, Cisco ASA, Akamai, MySQL, PostgresSQL

React, Redux, TypeScript, Material-UI, HTML, CSS, JavaScript.

Shopify API, AJAX, JSON

Languages English – B1-B2 (Intermediate/Upper Intermediate)

Ukrainian (Native)