kerolos walsom

Senior IT InfrastructureFull Time

• Job Details:• Resolved complex network issues involving VLANs, load balancing, switching, VOIP, and wireless connectivity • Administered and maintained Active Directory, Group Policy, DNS, WSUS, WDS, and Microsoft 365 services • Managed and monitored over 30 high-resolution (4K) CCTV and IP camera systems • Utilized IT ticketing systems in Egypt and Qatar to track and resolve support requests efficiently • Implemented network upgrades using Cisco switches and TP-Link wireless infrastructure • Deployed and configured Windows Server 2019, including Forest setup, Domain Controller, File Server, and DNS • Reconfigured firewall and load balancer settings using Sophos UTM/XG technologies • Provided high-level technical support and collaborated with cross-functional teams to ensure system reliability

On-Site Support | Multi-Client EnvironmentFull Time

• Job Details:• Delivered on-site technical support for multiple companies, including Group M, JWT, and Symerise, based on ticket-based service requests • Handled a wide range of IT infrastructure, including switches, routers, call managers, QNAP storage, wireless systems, and servers • Provided support across both Windows and macOS platforms, ensuring smooth operation and user satisfaction • Installed, configured, and troubleshot enterprise software such as Dolphin ERP, Microsoft Office 365, McAfee, Sophos Endpoint Security, and Cisco AnyConnect VPN • Ensured timely resolution of technical issues while maintaining high standards of service and communication • Collaborated with internal IT teams and vendors to escalate and resolve complex technical problems

Network EngineerFull Time

• Job Details:Built the new network infrastructure for the new company building from the scratch using “CISCO Meraki switches, and Brocade Switches”. Created VLANs for Ten different departments to split and secure them. Built a new virtual environment using ProxMox . Protected and secured environment the network using Sophos XG firewall. Installing and configuring the Wireless network for five floors using CISCO Meraki. Installing the VOIP system for over 40+ points using the Grand stream VOIP system.