In a nutshell

Employment

I am currently working with the GRNET as Head of Systems Development. I have been the team leader, responsible for the design and deployment of the first OpenStack public cloud offering in GRNET.

Key Certifications

  • Certified Kubernetes Administrator
  • Certified OpenStack Administrator
  • RedHat Certified System Engineer
  • Vmware Certified Professional
  • Certified Information Security Auditor
  • Certified ITIL professional
  • Certified Lead Auditor for ISO 9000, 20000-1, ISO 27001.

  • Academic

  • MSc in Strategic Management (University of Athens)
  • MSc in Networking and Data Communications (Kingston University)
  • MEng in Informational and Communication Systems (Aegean University)

  • Core Skills

    Cloud Architech

    Over a decade of hands on involvement with virtualization and cloud infrastructure with VMware, KVM, Xen, OpenNebula. Currently working on OpenStack and cloud infrastructure automation methods exploiting MaaS, Juju and Ansible.

    Linux

    Two decades of professional experience in Unix and Linux system. Design, installation, configuration and operation of full stacks including Apache, Nginx, MySQL, PostgreSQL, Varnish, Haproxy, Corosync, Pacemaker, Nagios, Grafana, Ansible, Puppet

    Managment

    Experienced team leader of various technical teams of engineers up to 20 people. Several years of experience as CTO for a multimillion organization responsible for strategy, budget, contracts and operations.

    Storage

    CEPH is the current trend. For many years working with GlusterFS and traditional NFS shares. Quite extensive experience with commercial SANs (IBM, Dell, Fujitsu, Hitachi) and linux options as LVM, MDadm and DRBD

    Single Sign On

    Vast experience with Single Sign On through SAML protocol. Design, installation, configuration and operation of Identity Provider Servers and Service Provider Applications with Shibboleth.

    Security and Network

    While never been primary professional necessity, always deeply involved with the design or administration of both commercial and open source firewalls (Cisco ASA, Checkpoint, Pfsense, IPtables)as well as datacenter networking.

    Personality

    I have an expert personality evaluation by ManPowerGroup, accord to the DISC method which is a method of identifying predictable actions and personality traits within human behavior.

    According to DISC my personal style is “Peacemaker SC” and my

    Dominance (decisive, authoritative, direct)
    Influence (talkative, persuasive, interactive)
    Steadiness (desire for security and peace, ability to be a team player)
    Conscientiousness (desire for structure, organization, details)

    Degrees

    Languages

    Greek

    Native Speaker

    English

    Proficiency in English by Cambridge University, level C2

    Spanish

    Dele Intermedio by Instituto de Cervantes, level B2

    Certifications

    Career

    Senior Systems Engineer and Cloud Architect at GRNET 

    Lead architect and engineer for a multi region public cloud for the Academic and Research community in Greece. The public cloud utilizes Openstack and CEPH, offering at the moment more than 8000 computing cores and 1PB of raw data.

    large_GRNET_Logo_Transparent-e1431694322566-1
    Greek Research and Technology Network
    Senior System Engineer

    Chief Information Technology Officer at the SNFCC

    Head of the IT division within the organization. The core responsibility of the IT division is to maintain the Data Center facilities (45 Racks and over 30 POPs within a 200.000 sqm of the facility) and provide core IT services to the SNFCC AE, National Library of Greece and Greek National Opera.

    SNFCC
    Stavros Niarchos Foundation Cultural Center
    Chief Technology Officer

    Senior Systems Engineer and Head of NOC at the Hellenic National Documentation Center

    Head of Network Operations Center and Senior Systems Engineer responsible for the core ICT infrastructure, ICT services and digital data with main responsibilities including devops, virtualization, cloud storage, web services, high availability and scalability, monitoring and capacity planning

    LOGO-EKT-horizontal
    National Documentation Center / Hellenic Research Foundation
    Head of NOC

    Unix Systems Engineer at Ideal Systems (merged with Adacom)

    Systems Engineer on the field with focus on Sun Solaris and RedHat Linux environments. Active participation in project for the  Hellenic Ministry of Public Order, Hellenic Ministry of Foreign Affairs, Hellenic Ministry of Education, Wind Hellas

    s5_logo
    Ideal Systems
    Unix Engineer

    Internet Technician at the ISP FORTHnet

    Remote and on-site support for dial up and corporate Internet users. Support for small office corporate internet connections and intranets

    Forthnet_logo
    FORTHnet
    Technical Support