PROFILE

IT professional with over 15 years of experience in Linux systems administration, network management, web hosting, server farm planning and virtualization. Looking for a bigger project to apply and expand my skillset.

TECHINICAL SKILLS

• Operating Systems: Linux (CentOS/RHEL, Debian, Ubuntu), Windows Server
• HA Hypervisors: Proxmox, XenServer, Nutanix, VMWare ESXi, Ovirt
• Cloud platforms: Amazon Web Services, Azure
• Server Software: Apache, NGINX, Tomcat, MySQL, PostgreSQL, Bind, Postfix, Exim, Dovecot, Pacemaker, OpenVPN, OpenSSH, Kickstart, Samba, NFS, Docker
• Monitoring: Zabbix, Nagios, CheckMK
• Development: Jira, Git, Jenkins
• Scripting: Bash, SQL, Python, Perl, Ansible, Powershell
• Hardware: HP/Dell/Supermicro Servers, Cisco/Netgear managed switches, Tripplite/APC managed PDUs, JBODs, DELL iSCSI
• Networking: Wired and wireless LANs setups, routers, switches, VLANs
• Web hosting: cPanel, Plesk
• Web development: HTML, PHP, JavaScript
• Web applications: Wordpress, Drupal, phpBB, etc.

OTHER SKILLS

• Very fast learner
• Analytical and problem solving skills
• Highly organized
• Good team worker with team leading skills
• Enjoy sharing my knowledge

PROFESSIONAL EXPERIENCE

IT Support Manager
NPO USA Inc., Chicago, Illinois
September 2022 - Current

• Supervised a team of junior IT specialists in monitoring and troubleshooting a large-scale infrastructure comprising over 1,000 servers for major corporate clients, ensuring optimal system performance.
• Acted as the escalation point for complex technical issues, successfully resolving critical problems that required advanced expertise, thereby maintaining system uptime and client satisfaction.
• Managed and oversaw the completion of multiple IT infrastructure projects, ensuring timely delivery and alignment with client requirements and organizational goals.
• Led and contributed to various client projects, including software installations, cloud configurations, and appliance deployments, ensuring seamless integration and functionality.

Senior Systems Administrator
Frontier Networks Inc., Toronto, Ontario
August 2019 - August 2022

• Maintained full server infrastructure for ISP/VoIP services (FreeSWITCH, FreeRadius, Bind, MySQL, PostgreSQL, Rancid, NGINX, Tomcat, etc.)
• Deployed and managed baremetal HA server clusters (hypervisors, storage, MySQL)
• Deployed and managed system health monitoring systems, cPanel hosting servers, LAMP application servers, Active Directory servers
• Deployed and managed central credential storage system
• Migrated legacy Linux and Windows systems
• Scripted customizable VM provisioning with AWX frontend for L3 staff
• Provided support for docker swarm cluster
• Configured Cisco switches
• Picked and interviewed candidates for junior positions
• Provided support and training to junior staff
• Documented projects built and updated company wiki

Senior Systems Administrator
HostPapa Inc., Oakville, Ontario
August 2007 - November 2018

• Planned and supervised growth of shared hosting company from 5 to over 300 servers
• Deployed, managed, maintained and tuned CentOS and CloudLinux servers running cPanel for shared hosting business
• Deployed, managed, maintained and tuned CentOS/Debian servers for various business needs (Apache/MySQL/Postfix/Samba)
• Troubleshot full spectrum of problems related all parts of LAMP platform: Apache, PHP, MySQL, Exim MTA and Dovecot and mail server
• Automated server provisioning with ansible
• Deployed and maintained server monitoring systems based on Nagios and Munin
• Deployed Bind DNS servers
• Deployed VMWare ESXi and XEN hypervisor servers
• Planned and took part in overnight migration of over 50 physical servers between two datacenters
• Assembled and upgraded HP Proliant server hardware
• Mitigated DDOS attacks on servers
• Investigated hacking/spamming incidents
• Troubleshot and repaired hardware
• Rebuilt servers from failing drives
• Wrote bash scripts to automate common tasks
• Wrote SQL scripts to generate usage and accounting reports
• Set up web applications (WordPress, Joomla, Drupal, phpBB, SMF, vBulletin, etc.)
• Resolved run-time problems with web applications (PHP/Perl/Apache/Tomcat)
• Installed and maintained company billing and support software (Ubersmith, ModernBill, Kayako)
• Set up MySQL replication servers
• Troubleshot network related problems
• Trained junior system administrators
• Wrote infrastructure documentation/server installation manuals and maintained internal knowledgebase
• Provided support to clients through ticket system
• Wrote reports for senior staff
• Managed web hosting account
• Administrated office systems (Samba Server, LDAP, Bacula servers) and network (Watchguard Router, Netgear switches)

Technical Support Specialist
IT World Canada, Scarborough, Ontario
February 2007 - August 2007

• Administrated office network (Windows 2000-2003 domain controllers, Linux mail server, SQL database and backup servers)
• Provided technical support for Windows office workstations
• Performed hardware upgrade and repair
• Performed software installation, configuration and upgrades
• Set up wired and wireless local area networks
• Wrote reports for senior staff

Systems Administrator
Canaca.com Inc., Mississauga, Ontario
June 2005 - June 2006

• Administrated a farm of 200+ servers running Linux (including web hosting, backup and VoIP servers)
• Provided phone and email support (through ticket system) for web hosting, dial-up, DSL and VoIP services clients
• Assembled and upgraded server hardware
• Performed server software installation, configuration and upgrades
• Troubleshot and repaired hardware and software
• Wrote scripts to automate common tasks
• Trained customer support team
• Trained junior system administrators

Systems Administrator / Instructor
Dixon Community Services, Toronto, Ontario
January 2005 - April 2005

• Provided technical support for Windows office workstations

Network Support Analyst
Xela Enterprises Limited, Toronto, Ontario
2004

• Provided technical support for Windows office workstations
• Tested and assessed antivirus and intrusion detection software
• Wrote reports for senior staff

EDUCATION

CERTIFICATIONS

LANGUAGES

• English - fluent
• Russian - native

REFERENCES

Available at request