Konstantinos Xanthopoulos

Experience

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  MaxNet Computers

  Jan 2005 - Sept 2007

  IT Field Technician

  • On-site customer support and troubleshooting• Operating systems• Networking equipment installation• Customer support call center

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  Mandatory Greek Army Service

  Feb 2011 - Nov 2011

  Military command of Greece/Infantry unit 543 Military Campus

  • Administration of military camp terminals• Call center support• Troubleshooting

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  IPN Insurance Agency

  Nov 2011 - Sept 2013

  IT Administrator

  • Windows Server 2008 R2 Administration• Active Directory, Group Policies, DNS, DHCP• Microsoft Exchange 2007 Administration• Administration and Configuration of IRIDA insurance and accounting software• Backup with Acronis• Creation of company's Facebook page with up to 3000 fans• Troubleshooting and maintenance

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  Freelancer

  Sept 2013 - Sept 2014

  IT Administrator/Consultant (Freelancer)

  • System administration with Windows Server and Active Directory Domain Services• Microsoft Exchange administration• Server Virtualization with Windows Server Hyper-V • VMware Server Virtualization with VMware vSphere• P2V - V2V Conversions

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  I.T Headquarters

  Apr 2014 - Jan 2015

  Senior Windows Engineer (Remote Position)

  • Windows Server 2003, 2008, 2008 R2, 2012 and 2012 R2• Microsoft Exchange 2003, 2007, 2010 and 2013 • Administration of VMware and VirtualBox virtualized environments• Administration of Ubuntu Server and Raspberry Pi installations• Nagios CentOS monitoring and OpenVPN implementations with Raspberry Pi • Backup and DR Replication with Storagecraft's ShadowProtect and ImageManager• QNAP NAS installation and administration

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  SysteCom S.A

  Sept 2014 - Nov 2021

  • Microsoft Hyper-V Virtualization, Clustering & Disaster Recovery Architect• Microsoft Exchange Architect• Microsoft Azure/Office 365 Engineer & Consultant with specialization to Azure Site Recovery/Enterprise Mobility & Security implementations• Cybersecurity Analyst & Consultant in alignment with Center for Internet Security (CIS) Controls• Citrix Virtual Apps & Desktops (formerly XenApp & XenDesktop) / NetScaler Specialist• Forcepoint Web Security & DLP Engineer• ConnectWise (formerly LabTech) Monitoring & Automation Solution Expert Show less • Project Planning and Infrastructure Analysis on Windows Server/Active Directory/Microsoft Exchange upgrade and migration projects• Hyper-V & VMware Virtualization and Clustering projects with SAN storages• Planning & Implementing enterprise DR scenarios with VM/Storage to Storage replication and Microsoft Azure cloud platform with Azure Site Recovery• Implementing, configuring and upgrading Citrix XenApp/XenDesktop solutions with NetScaler Gateway & LB setups• Implementing 2FA with PointSharp ID to secure critical workloads• Cutover, Staged & Hybrid migrations from On-Premises Exchange infrastructures to Office 365 Exchange Online• Administration and configuration of Cisco ASA Firewalls & Cisco/Dell Switches• Backup and DR Replication with Storagecraft's ShadowProtect & ImageManager• Powershell/Bash scripting• Administrating Linux/BSD environments implementing and maintaining Firewalls, DHCP and File Server deployments Show less

  • Senior System Engineer

    Jan 2018 - Nov 2021

  • System Engineer

    Sept 2014 - Nov 2021
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  COMPTEC IT

  Nov 2014 - Aug 2019

  Solutions Architect

  • Undertaken infrastructure upgrade projects• Enhanced Cyber Security posture across environments• Introduced new technologies, methods and toolset

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  COMPTEC IT

  Nov 2021 - now

  • Head of Operations

    Mar 2023 - now

  • Operations Manager

    Nov 2021 - Mar 2023