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David Ok

@davidok

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SOC Technical Lead at Fujitsu who drives incident response and detection engineering across managed security services.

New Zealand

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What I'm looking for

I’m seeking a new opportunity where I can apply my operational and technical experience, take on new challenges, and continue growing as a security specialist.

At Fujitsu, I lead incident response from investigation and containment through remediation, and develop and tune detection rules to improve coverage and reduce false positives. I also train and mentor SOC analysts, review their investigations, and build internal tooling to automate team processes.

I deliver managed security services to government and private-sector organisations across New Zealand and Australia, working across platforms including CrowdStrike Falcon, Microsoft Defender, Microsoft Sentinel, Elastic SIEM, Netskope and Vectra. After moving into IT in New Zealand and completing my studies in a second language, I’m seeking an opportunity to apply my operational and technical experience, take on new challenges and continue growing as a security specialist.

Experience

Work history, roles, and key accomplishments

Current

SOC Technical Lead

Current

Fujitsu

May 2025 - Present (1 year 5 months)

Lead end-to-end incident response, manage and mentor SOC analysts, drive detection engineering, onboard clients, and deliver monthly security reports. Build internal SOC tooling and automate team processes.

Incident Response Detection Engineering CrowdStrike Falcon Cloud Security Microsoft Defender Microsoft Sentinel Elastic SIEM (ELK Logstash Kibana)Netskope Vectra KQL CQL EQL ES|QL Python PowerShell Azure Team Leadership Client Onboarding Security Reporting

Senior SOC Analyst

Fujitsu

Jul 2024 - May 2025 (10 months)

Acted as Shift Lead, led high-priority incident responses, delivered training, provided security advisory, tuned SIEM rules, and conducted threat hunting.

Incident Response SIEM Tuning Threat Hunting Security Advisory Training Team Leadership

SOC Analyst

InPhySec

Aug 2022 - Jul 2024 (1 year 11 months)

Triaged and investigated security alerts, conducted threat hunting, tuned SIEM rules, wrote security reports, and supported high-priority incident responses.

Alert Triage Investigation Threat Hunting SIEM Tuning Security Reporting Incident Response

Service Desk Analyst

Datacom

Dec 2021 - Jul 2022 (7 months)

Provided IT support, resolved technical requests including software deployment via SCCM, and administered user accounts in Active Directory, Azure AD, and Exchange Online.

IT Support SCCM Active Directory Azure Active Directory Exchange Online Troubleshooting

Printing Service Assistant

Chungbuk National University

Oct 2019 - Jan 2020 (3 months)

Provided customer service and printing assistance.

Customer Service Printing

Education

Degrees, certifications, and relevant coursework

Wellington Institute of Technology (WelTec)

Graduate Diploma, Cyber Security

Graduate Diploma in Cyber Security with key courses in Incident Response & Digital Forensics, Cloud Security, Security Testing & Network Defence, Linux System Administration, and Information Security.

Victoria University of Wellington

Bachelor of Commerce, Information Systems & Business Analysis

Bachelor of Commerce in Information Systems & Business Analysis with 300-level courses in Information Technology Architecture, Enterprise Architecture, Digital Strategy, and Enterprise Security.