Marios Samarakis Email & Phone Number

Khalándrion, Attiki, Greece

- Migrating environments from on-premise to Azure-based.- Use of Azure environment and creation of resources, resource groups, as well as designing and implementing their performance, redundancy, connectivity and disaster recovery needs.- Operational Support/Optimization/Service and Preventive Maintenance of AD, IT systems and Data Management Solutions including Servers, Storage, VMware, Backup and Archiving Software solutions.- Responsible for running the necessary updating and patching cycles in the appropriate maintenance windows in order to ensure the compliance and integrity of our core infrastructure.- Competent troubleshooter and running the Incident management lifecycle: investigation, troubleshooting, root cause analysis, issue resolution, follow-up, and related documentation and communication to reduce the likelihood of the issue persisting in the future.- Providing General Windows Administration tasks, including Active Directory, User and Group Policy management.- Proficient in the operation and maintenance of the relevant Azure Admin Centers: licensing Admin center, Intune Admin Center, Entra Admin Center management of MS Defender, etc.- Use of WSUS and SCCM platforms and automate software deployment in specific deployment windows and groups for servers and workstations.- Supporting the planning, testing and implementation of Business Continuity and Disaster Recovery plans.- Responding to and providing evidence for IT Security audits and GDPR Compliance audits and follow the relative findings to their final resolution.- Participating in in-house or multi-party Projects to deliver new IT systems or optimized infrastructure architecture, run System Integration Tests, write and validate technical documentation including requirement analysis, architecture design, testing reports, administrator manuals etc.- Providing first level user support and assistance to business users related to their IT equipment or network.

Athens, Attiki, Greece

• Daily use of Microsoft Azure, IIS, SQL Server Management Studio (SSMS), Microsoft SQL Server• Administration and further development of the IT Infrastructure (network, server, storage, virtualization, backup, telecommunications)• Database Management and troubleshooting (SQL Server)• Deployment, Installation, configuration and maintenance of IT systems/services and applications• Error analysis and elimination of system malfunctions (client/server)• Redmine (ticketing system), RabbitMQ, ErlangOTP, MongoDB• Control of external service providers• Windows Servers as well as PowerShell virtualization using VMware• Use of Linux (Ubuntu/CentOS)• Network technologies and components (LAN, WLAN, VLAN, VPN, routing, firewall, network hardware)• Backup technologies• Cloud Infrastructure administration• Creation and maintenance of system documentation, instructions and guidelines• Control and optimization of existing processes and solutions, patch management

Athens, Attiki, Greece

- Responsible for 30 Cities Bus project of Greece (ΑΚΤΕΛ) and their cashiers (Ticket Point of Sales - POS). - Responsible for Bus Signs on stations (Smart Led Displays – Through RDP Push Server and ThingsBoard – IoT Platform).- Fare Products (Bus Tickets) creation and editing, depending on customers' needs (single/daily/weekly/monthly/yearly transportation). - Connecting to Production DBs, writing, editing and executing SQL queries per case needed.- Daily use of Anydesk, JIRA, VNCViewer, Putty, WinSCP, MySQL Workbench, MQTT. - Performing advanced troubleshooting by connecting directly to customer’s unit and providing workarounds. Usually to drivers facing different kind of issues upon trying to issue/sell a new ticket to passengers. - Reproduction of incidents in RnD (QA) office. - Escalating to 3rd Level (Developers) by providing the right logs, query exports and screenshots per case needed. Along with customer’s feedback. - KB creation & update. - Schedule and participate in conference calls in Skype.- Identify and effectively prioritize situations requiring urgent attention.- Medium experience on Ticket Vending Machines (TVM). - Business Travel (deliveries): 40 different Greek provinces & 1 in Jeddah (Saudi Arabia).

Greece

- Responsible for Washington DC Sportsbook project. - Responsible and tracking the status (backlog) of open US Production issues for Betting and Lottery platforms at 2nd Level and ensure their timely resolution (SLA).- Connecting to Linux Servers, use of commands to retrieve appropriate logs per case needed.- Connecting to DBs, writing, editing and executing SQL queries per case needed.- Responsible and handling of Daily, Weekly, Monthly Tasks (like reports etc.) with exact due dates. - JIRA, Teams, DBeaver, MobaXterm, Kibana, daily use. - Timely creation of a “Problem” when an incident’s root cause is not identified.- Performing advanced troubleshooting for Production incidents/problems.- Having the ownership, monitoring & tracking of problems. In case of recurrent issues come up, engaging in process improvement activities. - Reproduction of incidents and fix verification, by performing regression tests.- Often cooperation with QA department per case. Use of Terminals machine to reproduce issues in real time. - Participate in the root cause analysis of problems.- Identify and effectively prioritize situations requiring urgent attention.- Escalating to 3rd Level (developers) after providing the right logs, query exports and screenshots per case needed. - Maintain excellent communication with all members of the team and with the company's rest departments. - Daily use of VPN Clients, like Cisco AnyConnect Secure Mobility Client. - KB creation & update.- Schedule and participate in conference calls in Teams (internally or with US colleagues & Lottery). - Efficient and productive on Working From Home.

Greece

- Respond timeously to requests for technical assistance in person, via phone, or electronically.- Research solutions using available information resources.- Follow standard service desk procedures.- Log all service desk interactions and document issue resolution using the ITSM system.- Maintain accurate inventory of all hardware and software resources and parts.- Identify and effectively prioritize situations requiring urgent attention.- Stay current with system information, changes and updates.- Maintain excellent communication with all end users and other members of the technologydepartment.- Support user applications such as Mail and web gateways, user applications, Citrix desktop applications, corporate apps etc.

Greece

Desktop Assembler and tester. Data entry into Excel spreadsheets and SAP. Daily use of Microsoft Office.

Greece

While i was fulfilling my Military Service obligation i was simultaneously helping and working in the IT Department of the Military base in Athens in: Desktop Assembly, repairing and testing. Printers service and malfunctions. Data entry into Excel spreadsheets. Daily use of Microsoft Office.

Greece

University Practicing: Desktop assembler and testing. Helping my manager in General IT colleagues' issues. Printers support. Data entry into Excel spreadsheets. Daily use of Microsoft Office.

Computer Engineering

TEI of Peloponnese is part of the technological sector of higher education of Greece, which focuses on educating professionals of high.

Very Well, High School/Secondary Diplomas And Certificates, 17,92/20

Gymnasium & Lyceum at Agia Paraskevi (Pierce College)