SAEK AKMI & Metropolitan College, members of Alphabet Education, the largest Educational Group in Greece, are seeking a highly skilled Senior System & Network Administrator to join our IT Department. The successful candidate will be responsible for the design, implementation, security, and maintenance of our systems and network infrastructure across all campuses of both academic institutions.

Key Responsibilities

Administers, maintains, and optimizes the Group’s network and system infrastructure (LAN/WAN, routing, switching, firewalls, Wi-Fi, virtualization, servers, storage).
Designs, configures, documents, and supports network and system solutions to ensure performance, reliability, and security.
Manages and supports telephony environments (PBX, VoIP, SIP) and unified communications services.
Coordinates with IT Support and Engineering teams to integrate systems, networks, and telephony solutions into broader IT operations.
Monitors system and network performance, troubleshoots issues, and implements resolutions to minimize downtime.
Develops and applies policies, procedures, and best practices for infrastructure operations and security.
Evaluates new technologies and proposes improvements or upgrades for efficiency, automation, and scalability.
Contributes to knowledge-sharing and promotes skill development within the IT department.

Requirements

Bachelor’s degree in Computer Science, Information Technology, or a related field (Master’s degree is a plus).
Minimum of 5 years of experience in system and network administration.
Experience in coordinating technical tasks or supporting cross-functional teams (no direct leadership required).
Strong knowledge of networking technologies and protocols: TCP/IP, DNS, DHCP, VLANs, routing, switching.
Solid hands-on experience with Microsoft Active Directory, including group policies, domain services, and identity/access management.
Experience with virtualization platforms (e.g., VMware, Hyper-V).
Familiarity with storage systems (SAN/NAS), capacity planning, and performance optimization.
Strong understanding of backup systems and procedures, including disaster recovery and business continuity.
Experience with Microsoft Azure services (Azure AD, cloud infrastructure, hybrid environments) is highly desirable.
Hands-on experience with telephony systems: PBX, VoIP, SIP, and unified communications platforms.
Proficiency with monitoring, diagnostic, and design tools for systems and networks.
Excellent communication skills, able to convey technical information clearly to various audiences.
Strong analytical and problem-solving abilities.
Relevant certifications (e.g., CCNA, CCNP, CompTIA Network+, Microsoft or Azure certifications) are considered an asset.
Proactive mindset with a drive for continuous improvement and innovation.

Benefits

Competitive compensation package, aligned with experience and qualifications.
Medical insurance plan.
A professional and collaborative working environment with high-quality facilities.
Opportunities for training, skill development, and career growth within a leading higher education group.

All applications will be handled with strict confidentiality and professionalism

Senior System & Network Administrator

Prepare for this role

Benefits

Job Type

Description

Requirements

Benefits

Skills