In a nutshell

Employment

I am currently employed by the GRNET (Greek Research Network) as a Senior Systems Engineer, leading the Cloud Engineering team for Openstack

Key Certifications

RedHat Certified System Engineer and Vmware Certified Professional. Certified Information Security Auditor (ISACA), ITIL professional and Certified Lead Auditor for ISO 20000-1, ISO 2700.

Academic

Engineer in Informational and Communication Systems (Aegean University, Greece), MSc in Networking and Data Communications (Kingston University, UK) and MSc in Strategic Management (University of Athens, Greece)

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

  • Motivating Goals: Security, correct procedures
  • Evaluates Others By: Precise standards (based on what they do), stability
  • Influences Others By: Attention to detail, dependability
  • Value To Team: Quality and correctness oriented, dependable, consistent
  • Reaction To Pressure: Stubborn, fearful, holds grudges
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

  • RedHat Certified Engineer (#110-320-462)
  • VMware Certified Professional
  • Sun Certified System Administrator (Solaris 7, Solaris 8)
  • List IteSun Certified Network Administrator (Solaris 7, Solaris 8)m
  • CISA - Certified Information Systems Auditor (ISACA)
  • ISO 27001, 20000-1, 9000 Certified Lead Auditor
  • Certificate in IT Service Management (ITIL Foundation)
  • Security Administrator NGX I&II

Career

Senior Systems Engineer and Cloud Architect at GRNET 

Main focus on design and delivery of OpenStack cloud for the academic and research community as the team leader the Cloud Engineering Team.  Also head of Systems Operations teams, responsible for operation and maintenance of several hundreds of servers and numerous applications.

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.

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

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

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
Technical Support