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International Airport of Heraklion, Crete S.A. is currently looking for a: ICT Network Engineer Responsibilities Ensures the uninterrupted 24h seamless operation of the Airport Campus Network (LAN, Wi‑Fi, IP Telephony System, Firewalls), as well as Data Center infrastructure. Maintain business continuity and meets the goals and objectives in line with the business goals of Heraklion Crete International Airport.  Administers all active network equipment (e.g. switches, routers, access points, firewalls). Oversees campus network operations through NMS tools. Provides Level 2/3 support for network-related incidents and service requests. Cooperates with the ICT team and supports contractors for the immediate resolution of network malfunctions. Conducts root cause analysis and guarantees timely issued resolution. Manages and supports the IP Telephony System (Call Manager CUCM). Monitors and maintains firewall systems to ensure secure connectivity. Executes upgrades and improvements to enhance network stability and efficiency. Supports Data Center operations. Performs replacements and preventive maintenance activities. Applies and manages access control rules and network segmentation. Assists network projects involving upgrades, relocations, or expansions. Analyzes usage patterns and implement strategies for capacity planning and optimization. Supports audits and ensures compliance with internal and external IT policies. Requirements Bachelor’s degree in Computer Science, ICT Systems Engineering or related field Master’s degree in Computer Science, Networks or related field is considered a plus Minimum 3 years of professional work experience in complex ICT environments Experience with Cisco Environments and especially SD Access Technology & ACI is a plus Vendor Certifications (Cisco, Checkpoint, Palo Alto) Excellent command of English, both written and verbal Competencies Excellent communication, organizational, and problem-solving skills Strong team orientation and goal-driven mindset