Executive profile

Dr. John Iliadis — Technology & Cybersecurity Executive

CIO / CISO leadership · Digital transformation · Cyber resilience · Enterprise technology

Executive positioning

Bridging enterprise IT transformation with business-aligned cyber resilience and governance for mission-critical and regulated environments.

John's career combines more than two decades of technology infrastructure, cybersecurity, cyber operations, digital transformation, resilience and risk experience — providing a perspective that connects the traditional CIO and CISO agendas.

Areas of expertise

Cybersecurity leadership (CISO)

Technology leadership (CIO)

NIS2 & EU cyber governance

Cyber risk & GRC

Digital transformation

Executive impact

  • 37% improvement in service availability — resilience and continuity programmes across mission-critical financial infrastructure.
  • 85% improvement in disaster recovery readiness.
  • Zero-downtime infrastructure migration for tens of thousands of users.
  • Designed and established an outsourced Security Operations Centre with custom SOC use cases for incident response.
  • Architected a zero-trust security transition across enterprise infrastructure.
  • Leads a team of 18 professionals delivering cyber operations and 24/7 service resilience.

Executive profile at a glance

Graphical executive profile of Dr. John Iliadis summarising his achievements, credentials and career highlights
Dr. John Iliadis — graphical executive profile. Download infographic.

Credentials & education

  • PhD in Information & Communication Systems Security, University of the Aegean; MSc, Royal Holloway, University of London.
  • Certifications: CISSP, CISM, CRISC, C|CISO, CCSP, ISSMP, COBIT, ITIL, Chartered Manager (CMgr MCMI), DPO Executive.
  • Board & community: ISC2 Hellenic Chapter — Board Member, President (2023–2025) and Chair of the Audit Committee; Advisory Board, MSc Law & ICT, University of Piraeus.