Experience

• 

  Private sector

  Jan 2001 - Jan 2014

  • Freelance Private Tutor

    Jan 2009 - Jan 2014

  • Freelance IT Technician

    Jan 2001 - Jan 2009
• 

  25/8 projects single-member limited liability company

  Mar 2014 - Oct 2014

  Junior web developer

  • German & Greek Joint Venture. Headquarters based in Hamburg, Germany.• Development of a professional and complicated Internet Web Site as a junior front-end web developer• Became familiar to web developing tools such as HTML5, CSS3, GIT, Bootstrap and issue tracking product/project management (Atlassian's Jira)

• 

  Public governmental sector, i.t. department municipality of em. papa, serres, greece

  Aug 2015 - Jan 2016

  It support engineer

  • Performance monitoring of the I.T. related issues of the City’s Hall facility (software/ hardware/ networking)• Supervising the main Municipality network Installation and Maintenance Subcontractor. In my daily tasks I had to be aware of the function and performance of all the hubs, Wi Fi Hot spots and the related to the network infrastructures servers.• Responsible for observing the proper functionality of the City’s Hall Web Site

• 

  At&t

  Feb 2017 - Jan 2020

  • Working for one of largest Global Telecommunication Company (AT&T) as a Tier 2 Network Support Engineer providing support to AT&T customers in English language with specified procedures and strict deadlinesPrinciple Duties and Responsibilities:• Troubleshooting any issue related to Layer 1-3 of the OSI Layer Model , escalate, and/or resolve tickets within defined SLAs.• Receiving calls from the customers to inform them about the status of new or existing tickets related with the issue they deal with.• Working remotely with field engineers for equipment testing / repair / replacement• Real-time customer-facing analysis, troubleshooting and service updates regarding:Loop and routing issues - Circuit failures and errors - Network packet drops and delays - Hardware failures - Quality of Service (QoS) - Wireless connectivity issues (Access Points and Controllers) - A number of cases regarding VoIP solutions• Supporting different kind of solutions through MPLS cloud and medias such as: Ethernet circuits - Single T1/E1 circuits and bundles over ATM/IMA and PPP Multilinks - Τ3/Ε3 over ATM - LAN / WAN / WLAN / VPN environments• Supported systems and products: High-end Multi-platform Cisco Routers and Switches , Cisco Wireless Access Points and Controllers , Riverbed Steelhead WAN accelerators , Paradyne FrameSaver SLV , Visual Networks ASE (Analysis Service Element) , Edgemarc Business in a Box , F5 load balancers , Juniper, Alcatel, HP devices Show less

  • Tier 2 Voice DNA & AT&T Collaborate℠ Technical Specialist

    Sept 2018 - Jan 2020

  • IGS (Integrated Gatekeeper Specialist) Mentor/Trainer @ AT&T via NSC Global

    May 2018 - Aug 2018

  • Tier 2 GTS (Global Technical Specialist) Network Specialist @ AT&T via NSC Global

    Feb 2017 - Apr 2018
• 

  Amazon

  Mar 2020 - now

  - Appointed as Regional Network Delivery TIPM for Italy and Germany.- Led large-scale WAN infrastructure migration programs across numerous fulfillment centers in Italy, ensuring optimized network performance, seamless cutovers, minimal operational disruption, and long-term network resilience.- Drove early engagement with key vendors and internal stakeholders for upcoming strategic WAN migration initiatives in Germany, with a focus on comprehensive scope planning, proactive risk mitigation, and strategic alignment.- Managed complex cross-functional collaboration between global infrastructure teams, regional operations, and external partners to ensure project execution quality, service continuity, and delivery on time and within budget.- Contributed to significant cost optimization by leading proactive vendor coordination and contract discussions, aimed at driving long-term value and efficiency.- Improved internal project visibility and communication by leveraging Asana as the primary project management tool for progress tracking, task management, and facilitating stakeholder alignment across diverse cross-functional teams. Show less - Successfully managed the deployment of extensive network connections across multiple countries, leveraging diverse technologies including DIA, AWS Direct Connect, 5G, and Starlink LEO, ensuring timely delivery and operational readiness.- Led contract negotiations with Internet Service Providers (ISPs), resulting in significant annual cost savings while simultaneously enhancing service level agreements (SLAs) and overall technological performance.- Streamlined resource allocation and financial oversight through comprehensive invoice audits and the optimization of inventory management processes, contributing to improved cost transparency and operational efficiency. Show less

  • Technical Infrastructure Program Manager

    Dec 2022 - now

  • Telecommunications Program Manager I

    Jan 2022 - Dec 2022

  • OpsTechIT Networks Carrier Engagement Team (ONCET) Tier 2 Wide Area Network Support Engineer

    Mar 2020 - Jan 2022