Summary
Overview
Work History
Education
Skills
References
Timeline
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CHRIS ELIOPOULOS

PICKERING,Canada

Summary

Dynamic Sr. Systems / Network Administrator with proven expertise at VISCOR / LEVITON in enhancing cybersecurity infrastructure and optimizing M365 environments. Skilled in VMware and endpoint management, I excel in troubleshooting and delivering technical support, driving operational efficiency while fostering a culture of security awareness among employees.

Overview

21
21
years of professional experience

Work History

Sr. Systems / Network Administrator

VISCOR / LEVITON
Toronto
01.2005 - Current
  • Manage everyday operations working closely with Corporate Infrastructure Team.
  • Shared responsibilities for endpoint security, M365 tenant administration, end-user MFA security implementation, end-user VPN for remote work, internal telephony systems, Intune-registered computers and mobile devices, and infrastructure across the enterprise, including switches, APs, wireless controllers, firewalls, redundant SDWAN, and ISP circuits, on-site UPS backup electrical systems, and critical manufacturing systems.
  • Administer VMware environment and Dell Compellent storage arrays.
  • Administer Windows Active Directory, M365, Intune, Entra ID, and accompanying Microsoft technologies.
  • Evaluate the performance of mission-critical business infrastructure.
  • Manage and maintain public-facing servers, external DNS records, and SSL certificates.
  • Maintain data availability and integrity through preventative and proactive system maintenance, updates, upgrades, and redundancies on all site infrastructure.
  • Implement and audit security best practices, firewall content filtering user policies, patch management, and password storage for all critical business infrastructure.
  • Involved in penetration testing outcomes and resolutions.
  • Manage, test, and maintain effective system Veeam backups, along with native SQL backups.
  • Maintain disaster recovery infrastructure, offsite cloud backups, replicated systems, and tape rotations.
  • Analyzed system logs in order to identify any potential security threats or vulnerabilities.
  • Participated in AD domain and M365 tenant migrations.
  • Implement, manage, migrate, and maintain the health of Microsoft Dynamics ERP business systems and operations for executives, office staff, and the manufacturing plant.
  • Involved in investigating new tech solutions.
  • Build and maintain data center racks, patch panels, cable runs, and telecom IDF closets.
  • Responsible for on-site manufacturing systems, AMADA press brake, and laser cutting machine integrations.
  • Barcode scanners, label printers, JNIOR devices, and rPies for assembly lines.
  • Conduct end-user training on systems and security, send out simulated phishing campaigns, and provide security training modules.
  • Provide second-level end-user systems and software support, and system imaging via AutoPilot.
  • Implemented security measures such as firewalls and anti-virus software to protect data integrity.
  • Provided technical support for end-users regarding network related queries or problems.
  • Managed email routing and internal message protocols to support reliable delivery of communications.
  • Create and maintain administrative, installation, and end-user documentation.
  • Managed projects related to improving overall cybersecurity infrastructure within the company.
  • Designed training programs aimed at raising awareness about cybersecurity among employees.

Jr. Network / Systems Administrator

ACCIDENT SUPPORT SERVICES INTERNATIONAL
01.2004 - 01.2005
  • Maintain a variety of server functions, backups, and daily routines.
  • Support network operations.
  • Provide support for staff at all collision center locations.
  • Deploy, troubleshoot, support end-user workstations, and applications.
  • Document and maintain IT procedures.

Education

IBM Systems, Blade Centers, SAN Courses -

IBM Campus
Toronto, ON
01.2005

3 Year Computer Systems Diploma -

Centennial College
Toronto, ON
01.2003

Skills

  • Microsoft desktop and server technologies
  • Active Directory, DNS, DHCP, DFS, GP, WSUS
  • Azure, M365, Entra ID, Intune
  • MS SQL Server administration
  • IBM, Dell, and HP infrastructure
  • VMware
  • Dell EMC / Compellent SAN
  • SolidWorks / PDM Vault Administration
  • Bar code scanning, label printing
  • Cisco / Meraki infrastructure
  • Aruba and Ruckus Wireless Systems
  • Cisco Umbrella
  • Dell SonicWall, Palo Alto Firewalls
  • Veeam Backup and Replication
  • Computes, ALMA CNC Systems
  • SolarWinds, LAN Sweeper, KnowBe4
  • MS SQL database administration
  • Avaya IP Office and VoIP phones
  • Microsoft Dynamics AX ERP
  • Surveillance and RFID security systems
  • Endpoint management
  • Penetration testing remediation
  • Technical support
  • Documentation creation
  • Backup management
  • IP addressing and subnetting
  • Software patching
  • Email administration
  • Excellent troubleshooting skills

References

Available upon request

Timeline

Sr. Systems / Network Administrator

VISCOR / LEVITON
01.2005 - Current

Jr. Network / Systems Administrator

ACCIDENT SUPPORT SERVICES INTERNATIONAL
01.2004 - 01.2005

IBM Systems, Blade Centers, SAN Courses -

IBM Campus

3 Year Computer Systems Diploma -

Centennial College
CHRIS ELIOPOULOS