Levko Kravchuk

System/Network Administrator by DevOps methodology

Vancouver, British Columbia, Canada

+1(778)987-5773

Linkedin

Github

levko.kravchuk@outlook.com

To review My CV, please download me :)


Technical Skills

Programming Languages

Bash

Python (scripting)

Networks Technologies

Vlan, 802.1 Q, Ethernet, VTP, STP, RSTP, EtherChanel (LACP), Bonding, DHCP, DHCPv6, IPv6

DNS, FTP, TFTP, Telnet, SSH, SMTP, IMAP, POP3, etc.

Security and Network Stability

ACL, PPPoE, GRE tunneling, VPN, 6to4, IPv6 SLAAC, VRRP, Firewall(s), Passive DNS(pDNS)

Data Bases

Mysql, SQlite3, MariaDB


Operating Systems

Microsoft Windows XP/7/8/8.1/10/11

Windows Server 2003, 2008r2, 2012, 2016

Centos, RedHat, Ubuntu, FreeBSD


DevOps Tools

Docker

Ansible

Nginx, Apache, Tomcat

Git, GitHub, Gerrit

Grafana, Nagios

Jenkins (Automation scripts)


Others

Galera cluster, Ha Proxy

Postfix, Microsoft Exchange Online, O365

Tenable.sc, Nessus

HTML

cURL, Dublin Traceroute, netcat, DNS over HTTPS

Jira, Confluence, Document writing, Root Cause Analyses, ITIL



Work Experience

Freelancer
Jun 2023 - Current

Linux

Improved skills: GitHub


TietoEvry
Dec 2020 - Jun 2023

Tenable.sc, Nessus scanners, Linux, Jenkins, Grafana, Artifactory (JFrog), Gerrit, Loki, PMP.

Improved skills: Python, Linux, Monitoring (CheckMK, Grafana, Loki), Troubleshooting, Vulnerability scanning, scripting, Apache, ESXi, Docker, Jenkins, IPv6, Git.


Advanced Internet Technology (AIT) (Lviv, Ukraine; Fayetteville, North Caroline, USA)
Jun 2020 - Nov 2020

Tier 1 Support, Linux, Windows OS, Network, DNS, Security scans, SSHFS, troubleshooting, cPanel, GitLab.

Improved skills: Linux, Monitoring, DNS, DHCP, Security scanning, scripting, Nginx, Apache, ESXi.


Software engineer IT Consultant and Support engineer at Honorary Consulate of Federal Republic of Germany (Lviv, Ukraine)
Sep 2018 - Jan 2023

Supported and consulted about IT infrastructure, Clients OS, Network, Ubiquity, Windows 10/11, macOS.

Improved skills: Windows clients OS, Network devices.


DevOps at SoftServe (Lviv, Ukraine)
Mar 2018 - Mar 2020

Software Engineer at TIER 1 team(SOC). Responsibility: support and monitoring of IT Infrastructure via RedHat, CentOS, Jenkins, Grafana, Git, Puppet, Nagios, Prometheus, Bash, Observium, BigPanda, Cisco UCS, and ESXi.

Improved skills: Linux, Monitoring tools (Grafana, Nagios), scripting, Load Balancer.


SoftServe University (learned)
Sep 2017 - Dec 2017

MariaDB, Ha Proxy, Locust, AWS EC2 instances, Autoscaling group, Docker, Tomcat, Git, Ansible, Eucalyptus, Bash.


Network and System-Administrator in Attorneys at Law “Pavlenko & Partners” (Lviv, Ukraine)
Jun 2012 - Jun 2017

Full-stack support of clients os: Windows XP/7/8/10, macOS, CentOS 6/7. Servers OS: Windows 2008r2, Remote Desktop Services, Mikrotik, UTM, mail server, Cisco Meraki SD-WAN, Cisco Meraki Wireless, Firewall, QoS, Group Policy, IDS/IPS, WSUS, Print server, Symantec Endpoint Security.



System-Administrator, Network Administrator at OurLan (Own business) (Lviv, Ukraine)
Jun 2008 - Mar 2015

Installed, maintained and administered LAN and WAN of ISP network; efficiently managed smart switches, routers, and billing. Installed and maintained fiber optics cables, installed SCS, Experience with , UTP/STP, cabling technologies - Category 5, Category 6, Single & Multi-Mode Fiber, Maintain Data Center (Tier III). Worked with TCP/IP and other relative technologies.