Open to opportunities

Alex Smoilis

@alexsmoilis

Senior network and systems professional specializing in identity, cybersecurity operations, and secure OT/ICS environments.

Greece

Message

What I'm looking for

I’m looking for a role where I can own identity and access management, drive incident response and phishing defenses, and secure OT/ICS environments—using automation and measurable improvements while collaborating cross-functionally.

I’m a Network and Systems Senior Professional at DESFA S.A., where I administer Microsoft Entra ID, Azure Active Directory, and Group Policy for 600+ employees. I focus on strengthening Identity and Access Management by reducing dormant accounts and stale devices by 60%.

I also run hands-on cybersecurity operations: responding to incidents, implementing mitigations to reduce resolution time, and leading phishing awareness through Microsoft Defender for Office 365 (click-through rate down from 18% to 5%). I’ve helped improve mobile security posture with proposed MDM policies (Conditional Access, Enrollment cleanup), cutting onboarding time by 40%.

Before my current role, I supported the business as a User Support Professional at DESFA, handling 15+ ServiceNow tickets daily in line with ITIL best practices and exceeding SLA targets. I automated account setup to cut the SLA from “within a week” to same day, developed onboarding training that reduced phishing click rates by 30%, and supported endpoint security and OT/ICS integrations.

My background blends SOC-style monitoring and consultancy: at the Hellenic National Defense General Staff I analyzed network logs with IBM QRadar SIEM across four Army sectors, investigated intrusion attempts, and performed phishing email forensics using OSINT. I’ve also supported enterprise clients at PwC with cybersecurity operations and user access governance, and I’m building deeper breadth through my MBA (Hellenic Open University) and certifications including Fortinet Certified Associate and ITIL 4 Foundation.

Experience

Work history, roles, and key accomplishments

Current

Network and Systems Senior Professional

Current

Desfa S.A.

May 2025 - Present (1 year)

Administered Microsoft Entra ID, Azure Active Directory, and Group Policy for 600+ employees, reducing dormant accounts and stale devices by 60% while strengthening IAM. Led incident response and improved security awareness via Microsoft Defender for Office 365, lowering phishing click-through rates from 18% to 5%.

Microsoft Entra ID Azure Active Directory Group Policy Identity and Access Management (IAM)Microsoft Defender Intune Conditional Access MDM Incident Response OT ICS Security

User Support Professional

Desfa S.A.

Sep 2023 - Apr 2025 (1 year 7 months)

Administered Microsoft Entra ID and Azure AD for 600+ users, removing stale accounts and saving on license costs. Reduced account setup SLA from within a week to same day using automation, handled 15+ ServiceNow tickets daily, and improved onboarding by reducing support tickets and phishing click rates by 30%.

Microsoft Entra ID Azure AD ServiceNow ITIL Endpoint Security OT ICS Support Security Automation IT Asset Management Security Awareness Training Customer Support

Cyber Security Consultant Associate

PwC

Mar 2023 - Aug 2023 (5 months)

Supported enterprise clients with cybersecurity operations, user access governance, and attack recovery. Helped prepare and roll out client support process improvements to increase resolution efficiency.

Cybersecurity Operations Attack Recovery Operations Support Process Improvement client support

Cyber Mentorship Program

PwC

Nov 2022 - Feb 2023 (3 months)

Performed incident response activities using Microsoft Sentinel and Microsoft Defender for client environments. Proposed SIEM rules/use cases and supported training across GRC and penetration testing methodology research.

Microsoft Defender Incident Response SIEM GRC Penetration Testing Threat Detection

Security Engineer

Hellenic National Defense General Staff

Dec 2021 - Nov 2022 (11 months)

Monitored and analyzed network logs in IBM QRadar SIEM, detecting and investigating intrusion attempts across four Army sectors. Conducted log and phishing email forensics using OSINT tools, supported offensive and defensive cyber research, and tracked threats using threat intelligence feeds.

Log Analysis OSINT Threat Intelligence Incident Classification