Panagiotis Kostaras Email & Phone Number

Greece

Athens, Attiki, Greece

Greece

Greece

• Main duties and responsibilities:
• IT and telecommunication systems administration of the offices and operational energy projects in 6 countries (UK, Spain, Greece, Latvia, Romania and Cyprus).
• Designing, procuring, installing, configuring, maintaining and repairing the Group's IT and telecommunication network to adhere with Group IT policy.
• Responds and acts to inquiries from employees, management and external partners to provide technical assistance and support.

Greece

• Held multifaceted responsibilities to configure, install and administer network infrastructure optimized for various Nokia products. My responsibilities include:
• Handling requests in complex IPv4/IPv6 Packet Core networks and MPLS L3VPN backbone
• Designed and deployed networks using dynamic routing protocols (OSPF and BGP)
• Work for permanent solution on reoccurring network incidents.
• Identifying, diagnosing, and resolving network issues in a timely manner.
• Documenting network changes and updating diagrams accordingly

Greece

• The position involves Packet Core (MME and SGSN) end-to-end Network Verification. My responsibilities include:
• Design, implementation and maintenance of MME network infrastructure
• Initial bring up of the network element, L2/L3 configuration of the onboard switching units, integration with EPC elements (HSS, HLR, MSS, EIR, S-GW, LIC/LIB, NetAct, Traffica etc.) and connectivity establishment with.
• Test strategy, planning and execution for test cases involving interfaces, protocols and network layer services, focusing on correct functionality
• Technical documentation preparation (Test Specification, Test Plan, etc.)
• Cooperation with Solution Engineers and Architects to design and prepare test environment and test strategy for Nokia PS products portfolio

Greece

• I have worked in the VoIP department for hiQ4200 and hiQ4300 products. My responsibilities include:
• Performance testing, functional testing and reporting within an agile environment
• Support test environment setup and operations
• Customer cases fault replication and solution testing according to customer requirements and configuration
• Managing network infrastructure optimized for VoIP applications (VoIP Soft-switch hiQ4200, VoIP Application Platform hiQ4300)
• Router/switch configuration supporting lab testing equipment (Cisco 7609-S/4506/3750/2960, Juniper EX4200, Extreme networks switches)

Greece

• My responsibilities include:
• Maintaining and monitoring Hellenic Army’s servers, applications and network infrastructure
• Local and Wide Area Network (LAN/WAN) administration, maintenance and upgrade/expansion (cabling)
• Users' accounts management and configuration using Active Directory Domain Servers
• Network and IT support during military training exercises
• Help-desk duties involving hardware/software/network troubleshooting/installation and technical support/repair

Master Of Business Administration - Mba

Master'S Degree, Signals, Telecommunication And Networks

Bachelor Of Science (Bsc)