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I'm a Senior Systems and Network Administrator with over 15 years of hands-on experience designing, implementing, and maintaining enterprise IT infrastructures. I thrive on automation, optimization, and ensuring security, high availability, and performance across Linux, Windows, and virtualization platforms. Currently supporting mission-critical infrastructure at a European agency, I lead projects, coordinate with international teams, and deliver solutions aligned with business goals. I enjoy solving complex problems, sharing knowledge, and driving continuous improvement through tools like Ansible and modern monitoring.…I'm a Senior Systems and Network Administrator with over 15 years of hands-on experience designing, implementing, and maintaining enterprise IT infrastructures. I thrive on automation, optimization, and ensuring security, high availability, and performance across Linux, Windows, and virtualization platforms. Currently supporting mission-critical infrastructure at a European agency, I lead projects, coordinate with international teams, and deliver solutions aligned with business goals. I enjoy solving complex problems, sharing knowledge, and driving continuous improvement through tools like Ansible and modern monitoring.

Haris Panagakis

Developer, Web Developer, Front-End Developer, +2

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I'm a Senior Systems and Network Administrator with over 15 years of hands-on experience designing, implementing, and maintaining enterprise IT infrastructures. I thrive on automation, optimization, and ensuring security, high availability, and performance across Linux, Windows, and virtualization platforms. Currently supporting mission-critical infrastructure at a European agency, I lead projects, coordinate with international teams, and deliver solutions aligned with business goals. I enjoy solving complex problems, sharing knowledge, and driving continuous improvement through tools like Ansible and modern monitoring.…I'm a Senior Systems and Network Administrator with over 15 years of hands-on experience designing, implementing, and maintaining enterprise IT infrastructures. I thrive on automation, optimization, and ensuring security, high availability, and performance across Linux, Windows, and virtualization platforms. Currently supporting mission-critical infrastructure at a European agency, I lead projects, coordinate with international teams, and deliver solutions aligned with business goals. I enjoy solving complex problems, sharing knowledge, and driving continuous improvement through tools like Ansible and modern monitoring.

Available to hire

I’m a Senior Systems and Network Administrator with over 15 years of hands-on experience designing, implementing, and maintaining enterprise IT infrastructures. I thrive on automation, optimization, and ensuring security, high availability, and performance across Linux, Windows, and virtualization platforms.

Currently supporting mission-critical infrastructure at a European agency, I lead projects, coordinate with international teams, and deliver solutions aligned with business goals. I enjoy solving complex problems, sharing knowledge, and driving continuous improvement through tools like Ansible and modern monitoring.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Greek, Modern

Fluent

English

Fluent

German

Beginner

French

Beginner

Work Experience

Senior System Engineering Specialist at Self-Employed – Strasbourg (EULISA)

August 1, 2023 - November 6, 2025

Maintain and configure RHEL and Windows servers; deploy AD services; manage VMware servers and vCenter cluster; maintain HP-UX servers and SAN switches; operate Nagios/Icinga monitoring; manage HP OneView; maintain Certification Authority; firmware maintenance; patching; perform Adaptive Security Maintenance; automate tasks with Ansible; diagnose hardware issues; coordinate HP parts delivery and on-site repairs; create and manage tickets and changes; support data center maintenance.

Principal IT System and Network Administrator – Solution Architect at Commsquare

August 31, 2023 - August 31, 2023

Served as system administrator for 60 users across three countries; provide hardware and software support; maintain Linux servers; patching; manage and maintain Windows servers; install, configure and maintain HP and Dell servers firmware; coordinate parts delivery and on-site hardware replacement; manage tickets and changes; upgrade systems for enhanced functionality and security; design, deploy and maintain VOIP, VPN, and virtual server environments; oversee physical LAN setup and rack cabling.

System and Network Administrator at Penguin City SA - Athens

March 1, 2017 - March 1, 2017

Outsourcing system administrator for 100 users across multiple clients; Linux systems (Ubuntu, CentOS, Debian, RedHat); patching; Windows servers; HP/Dell firmware; coordinate replacement parts and on-site hardware replacements; deploy VOIP, virtual server environments, and VPN; rack cabling; monitor and maintain networks.

Computer and Server Installation Technician at Quest Information Technology – Athens

September 1, 2008 - September 1, 2008

Mass build and install computers and servers.

Level 2 IT Support Engineer at Otenet Telecom (Cosmote) – Athens

September 1, 2008 - September 1, 2008

Level 2 telecom support on home users of ISP.

Level 2 IT Support Engineer at OnTelecom – Athens

May 1, 2008 - May 1, 2008

Level 2 telecom support on home users of ISP.

Computer and Server Installation Technician Internship at Quest Information Technology – Athens

September 1, 2007 - September 1, 2007

Mass build and install computers and servers.