• Manage the IP Network, Security and Systems engineering personnel.• Responsible for the interviews of potential staff.• Develop & Manage the Data Network CAPEX Budget.• Generate & deliver technology presentations.• Collaborate with internal customers for the smooth delivery & implementation of network services.• Organize & Coordinate all LAN/WAN & Security projects and ensure that they are completed on time without compromising quality and within budget constraints.• Responsible for the evaluation, selection and ordering of IP network & Security infrastructure.• Lead for the LAN/WAN & Security Design and its future evolution.• Responsible for the design, evaluation and implementation of integrating new services in the IP Network.• Close cooperation with C-level executives and InfoSec Dept. for IP Network & Security deployments that ensure regulatory compliance and business continuity.• Create and maintain the Network documentation.• Constantly establishing and maintaining professional relationships with internal and external collaborators to ensure that company goals are achieved on time, with quality, and within budget.

• Managed the full project lifecycle of the Athens – Piraeus Electric Railways Co. security system (CCTV, Audio, Alarm and Access Control) over a TCP/IP WAN.• Worked very closely with the C-level executives to ensure the smooth project progression.• Organized daily and weekly meetings to track progress and proactively resolve problems.• Streamlined work processes to decrease costs through well-managed planning and scheduling.

Participated in the Design & Implementation of a Cisco based national ISP backbone in Greece. Responsible for creating and maintaining Network Design documentation (HLD & LLD) and procedural documentation.

Managed and mentored the NYC network engineering team. Worked closely with sales staff and technical consultants to ensure customer satisfaction. Offered pre-sales support to sales reps to design, propose & close new deals with customers.Collaborated with customers to ensure smooth delivery & implementation of Internet service. Responsible for designing network solutions for high-level customers based on Cisco Infrastructure.

Responsible for the Design and Implementation of complicated routing solutions providing customer connectivity to the Internet.

Deployed one of the largest TCP/IP dial-up networks in the world, AOLNet.

Designed and implemented Frame Relay and ISDN as backup for the administrative network. Designed and deployed nation-wide cellular network.

Support / Troubleshooting of a WAN network of more than 350 sites.Monitored critical exchange / trading circuits (NYSE, COMEX, NASDAQ…)