Individual Member Profile

April 25, 2019

Unaffiliated

**November 2020 DevOps Consulant – Senior System Engineer at Zero One Logic (01lgc)** Senior System Engineer-DevOps Consultant:Participating in the design, planning and implementation solutions with automation, ELK and Kafka.Design and implement Automation Policy - IaC - to Azure and AWS with Terraform * Design and Deploy ELK Stack on HyperV Cluster. * Design and Deploy Kafka Cluster in OpenShift 4.5 * Design and Deploy Automation Policy for VMs with Terraform in Azure. * Design and Implementation OKD 4.5 with ArgoCD in Azure as PoC. October 2019–October 2020 Senior DevOps Engineer at SIX Digitax Exchange (SDX) Senior System Engineer-DevOps Consultant:Participating in the design, planning and implementation for DB as a services or as High-Available environment per container. Working with the DevOps and SRE engineers to develop and document standards and procedures. Ensure effective security, operation and peak performance of database containers and Database management environments. Creating automation scripts for Azure and integrating with the pipelines. Developing of customer support processes, technical planning, and work coordination. • Implementing with Terraform and Ansible working in Infrastructure as a code (IaC) in Azure • Working with Nexus and Nexus IQ as internal artifactory store. • Implementing and deploying PostgreSQL Operator with Helm Charts in Kubernetes cluster environment and manage with Operator Framework. • Working with CI/CD pipelines and GitLab. • Deep working knowledge with OpenShift, optimizing and performing containers with helm charts and Ansible. • Automating environment build and provision using containerization and orchestration tools with Docker, Kubernetes and OpenShift. • Designing and implementing backup policies and Disaster scenarios for DB Operator. • Deploying Microsoft Monitors Agents using Ansible and Terraform scripts. April 2019–October 2019 Senior SBS engineer at EEAS-European External Action Ser- vice Brussels Performing functional and empirical analysis related to the design, development, planning and configuration of hardware and software. Lead implementations and roll outs of new hardware, software and tools. Assisting with and participation in disaster recovery testing. Researching and identifying hardware and software to meet he needs of the Organization. Developing system architecture and system design documentation, providing the best workaround solution. Responsible for the technical integrity of work performed and deliverables associated with the Systems Engineering area of responsibility. Providing technical leadership for the integration of requirements, design, and technology. • Designing High-level design (HLD) and Low-level design (LLD) for classified Nutanix environment. • Implementing and installing Acropolis – KVM compatible hypervisor- Calm. • Configuring Nutanix Cluster and Nutanix Calm metrics system. • Configuring Replication Site and Backup plan. • Deploying the Dev -Test environment and correcting issues in hardware compatibilities. • Migrated Hyper-V Virtualization to hyper converged environment Nutanix with Acropolis Hypervisor. • Optimizing Nutanix Environment with anti-affinity rules and policies. • Test Disaster Recovery and optimizing the process. • Integrating and installing OpenStack with Calm and configuring Nutanix resources. • Deploying and testing VM instances and Networks with Ansible. • Testing and integrating Kubernetes K8s cluster in Nutanix environment – Karbon Platform Services - • Integrating Jenkins with Nutanix Calm. May 2017–2019 March MTI,Athens.Greece:Professional Services -Consulting-Cloud Architect 2Identifying and solving professional service problems to improve the reliability and efficiency for the IT infrastructure, providing a high standard of customer services in storage, hyper-converged, Virtualization and Cloud environment. Designing and implementing large storage systems and planning migration any WinOS or Linux systems to new environment. • Data Collection with Ansible, batch scripting and power shell for WinOS, VMWare hosts, Redhat hosts and HP/UX hosts (over 1000 bare metal hosts). • Initiating systems engineering practices to design, implement, configure, and install support systems and infrastructures within NetApp, Nutanix, Nimble, Redhat Virtualization (RHV) platform. • Designing and planning high available environments with NetApp, Nimble, Nutanix, Redhat Virtualization (RHV). • Designing and installing Redhat Virtualization and Ceph Storage with Replication. • Providing high-availability RHV operational support and automate solutions across the infrastructure. • V2V conversions from VMWare to RHV(Redhat Virtualization). • Drove integration of RHV (Redhat Virtualization) with Gluster and OpenShift in Nimble storage production and disaster recovery site. • Consulting PostgreSQL High Availability in Nutanix environment. • Designing and implementing NetApp storage on Premise and Cloud -AWS – solutions and providing NetApp services for disaster recovery management and backup. • Assess overall performance of IT systems to deliver reporting for on-command performance and unified manager review. • Designing and installing VMWare vSphere Cluster with Nutanix environment. Work Experience (past) May 2012–2017 Senior System Engineer: Cyta Hellas - Telecommunication Provider, Athens, Greece Led designing of functional technology solutions High-level design (HLD) and Low-level design (LLD) for all layers of company IT infrastructure (Storage, bare metal Servers, Virtualization, and Application). Planning and installing with Ansible, bash and batch scripts, define, build and maintain services with puppet. Supporting and installing the storage layer, bare metal layer, Virtualization layer and application layer. Assist with strategic planning activities (capacity planning, process improvement, maintenance, upgrade and end- of-life planning, roadmap development). Pro-actively ensured highest levels of systems and infrastructure availability. Conceptualised and maintained security, backup, and redundancy strategies. • Designing Storage Capacity planning and performance tuning NetApp Filers. • Working in complex NetApp filer migration, installation and configuration set-up and configuration management. • Implementing NetApp storage array performance tuning and volume configuration targeted at particular data types. • Deploying, loading and troubleshooting, replicating and maintaining servers (WinOS, Redhat). • Designing implementing, configuring and supporting an enterprise Cisco Unified Computing System (Cisco UCS) environment. • Working with Cisco UCS Manager and deploying bare metal servers with scripting. • Configuring, supporting and provisioning the virtual server environment -P2V conversions, V2V conver- sions, vCenter Manager. • Coordinating with managed services for provisioning and deploying a UCS infrastructure. • Configuring, supporting and provisioning bare metal installations of Windows, and various flavors of Redhat and Centos. • Designing and implementing Redhat RHEL6 with Oracle RAC 11G and 12G. • Tuning and performance Redhat with Oracle and NetApp Filer. • Implementing and supporting Nagios Monitoring. • Managing WinOS infrastructure. • Designing and implementing Microsoft SharePoint 2010/2013. • Supporting and maintaining the OpenLDAP infrastructure for RHEL, Centos and UCS Cisco systems. 3• Designing, implementing and supporting VMWare Virtualization. • P2V and V2V conversions with script process from Hyper-V and bare metals to VMWare environment. • VMWare integrations with NetApp and Cisco UCS Manager. • Designing and implementing RHV (Redhat Virtualization) and Redhat Gluster Storage for Dev and Test environment. -HP Blades with HP EVA storage -. • Planning and scripting V2V conversions from Hyper-V and VMWare to RHV (Redhat Virtualization). August 2002–2012 System Network Security Administrator:ALTER S.A. Broad- casting Channel TV, Athens, Greece Performed installation and configuration of WinOS and LinuxOS (Redhat and OpenBSD) systems and support the internal company activities and broadcasting services. Design automated processes over many of the more tedious network and systems maintenance tasks with scripts. Drove significant improvements to increase system efficiency and minimise human intervention time on daily tasks with automation (Bash, Python, batch scripting). Provided Exchange DAG design and implementation services to attain maximum satisfaction of end-users and High Availability. Designed and deployed Cisco Switch Clusters with OSPF and BGP to gain highest levels of systems and infrastructure availability with high-speed networks to support all the different kind of data in the company video, graphics, broadcasting and 3D systems. • Designing and implementing OpenBSD+Postfix Relay mail Server and Hardening company’s mail systems for Security and Privacy. • Designing and implementing external DNS servers with Redhat + Bind Dns. • Generated IDS system with OpenBSD Snort IDS technology and BASE environment to supporting management agents in evaluating network traffic for suspicious activity and issues. • OpenBSD Firewall with CARP load balancing, optimize and secure with firewall rules and managed all the VPN connections. • Designing and Supporting Redhat RHEL 2.1 with Oracle Database and create availability with Rsync. • Hardening and auditing systems (SELinux, Nessus and C2 security for WinOS systems, group policy restrictions). • Deploying Nagios Monitoring for Redhat (RHEL 2.1, RHEL 3 and RHEL 5), OpenBSD (3.8) systems and network devices (Cisco, Dlink, HP Switches) automation with bash scripting. • Designing and deploying Video Servers with Redhat (RHEL 3 and RHEL 5) and VLC (VideoLAN) server. • Deploying and supporting and migrating active directory from 2000 to 2012R2 and support all the activities with automation and scripting. • Planning and scheduling Microsoft Exchange System ( DAG with High Availability for each service ). • Migrating WinOS and LinuxOS systems from bare metal to Virtual machines with SCVMM (System Centre Virtual Machine Manager) with Microsoft and VMWare technologies. • Integrating SCOM (System Center Operations Manager) to check the updating process, patching and monitoring WinOS Servers and workstations. • Deploying Cisco Switches and D-Link wireless devices with BGP and OSPF protocol for high availability networks across the sites. 2001–2002 System Engineer - Field Engineer SYSWARE S,A, Systems Integrator Athens, Greece Responsible for the implementation of the projects in private and public sector, oversight of infrastructure including installing configuring, testing and maintaining operating systems, application software and system management tools. Competency in writing and maintaining custom scripts to increase system efficiency and lower downtime due to required human intervention. Excellent in communication as a connection with vendors and other IT personnel to resolve issues. • Ethniki Hellenic General Insurance Company: Upgrade all the global clients (Windows NT) with batch script. IBM AS/400 terminal client access update. • Greek National Tourism Organization : Installing and Configuring the internal network for the organiza- tions the process integrated with scripts and OS-ready imaging with Norton-Ghost for the organization. • Greek Public Vehicle Technical Control Centres: Deploying and implementing the wide national domain (Windows NT with Cisco Routers ) for the organization with automatic deploying the wireless devices and Window operating clients. 4• National Bank of Greece: Migration domain controllers (Windows NT.0) and applications servers for branches offices and bank shops. • Greek Manpower Employment Organization: Deploying and Implementing national wide education branches with Windows 2000 Servers and connect to AS400. • Eurobank Greece: Migration Computer Rooms and Data Centres: Scheduling and planning the process with time restrictions. • Agricultural Bank of Greece: Deploying multiply Windows 2000 cluster for Exchange and Microsoft SQL Services. • Greek Computer Technology Institute: Implementation and support of national wide network. Deploying Windows 2000 Server all in one Domain and Exchange Services and Redhat RHEL 2.1 with Dns and SMB file services ( Bind and Samba). • OTE Group-Greece : Deploying and implementing Windows 2000 Servers and Redhat RHEL3 disk imaging and configuring the details with CloneZilla. • NATO Headquarters, Headquarters Communications and Information Systems (CIS) project, Larissa – Greece: Implementin