Open to opportunities

Gabriel Adewunmi

@gabrieladewunmi

Message

I’m a Senior Security Specialist specializing in Splunk Cloud SIEM and cloud security architecture across multi-cloud.

Canada

Message

What I'm looking for

I’m looking for a security role where I can lead Splunk Cloud SIEM, automate detections with SOAR, and strengthen cloud identity, DLP, and incident response processes in a team that values ITIL-aligned execution.

I’m a Senior Security Specialist with 10+ years of experience architecting, integrating, and operating security solutions across enterprise-scale, 24/7 hybrid environments. I’m especially strong in Splunk Cloud SIEM engineering and operational support—designing, deploying, and tuning the platform across multi-cloud (AWS, Azure) and varied operating systems.

I translate business requirements into robust Splunk Cloud integrations while establishing ITIL-aligned security processes that improve day-to-day detection reliability. I’ve guided cross-functional teams on cloud security architecture, identity and access management, threat detection, and incident response—consistently supporting modern enterprise security monitoring programs on time.

My impact is measurable: I achieved a 45% reduction in false positives and phishing incidents through custom rule tuning and automation, and I built SOAR playbooks to automate alert triage—saving 120+ analyst hours/month and reducing MTTD/MTTR by 40%. I also deployed DLP using Microsoft Purview (reducing shadow IT exposure by 65%), reduced critical CVEs by 70% via vulnerability assessments, maintained 99.9% SLA compliance through ITIL-based incident/problem management, and improved phishing outcomes by 75% through KnowBe4 initiatives.

Experience

Work history, roles, and key accomplishments

Current

L3 Cyber Security Analyst

Current

IT Weapons

Sep 2024 - Present (1 year 9 months)

Led Splunk Cloud SIEM operations, integrating and supporting environments across AWS, Azure, and on-premises while building correlation rules, dashboards, and alerts aligned with MITRE ATT&CK. Designed Zero Trust and IAM workflows across multi-tenant Azure AD, AWS IAM, and Okta, and implemented ITIL-aligned incident/problem processes plus SOAR automation.

L3 Cyber Security Analyst

CyberGuard Technologies Ltd

Aug 2022 - Sep 2024 (2 years 1 month)

Architected and supported Splunk Cloud SIEM deployments for managed security clients, tuning analytic rules and integrating logs from firewalls, EDR, and cloud platforms. Led incident investigations, tabletop exercises, and security playbook development grounded in MITRE ATT&CK and Cyber Kill Chain frameworks, and implemented Microsoft Purview for DLP and eDiscovery.

Splunk Cloud Analytic Rule Tuning Firewalls EDR AWS Azure Data Modeling Tabletop Exercises Security Playbook Development Cyber Kill Chain Microsoft Purview Sensitivity Labels eDiscovery Client Security Posture Reviews NIST 800 53 ISO 27001

L2 Cyber Security Analyst

Agio AI Ltd

Sep 2021 - Aug 2022 (11 months)

Monitored and managed client security infrastructure including SIEM, firewalls, IDS/IPS, and endpoint protection to maintain optimal performance. Conducted risk assessments and security audits, handled Tier-2 incident triage and response, and supported clients with logging practices, agent/sensor deployment, and security awareness training.

SIEM Firewalls IPS Endpoint Protection Risk Assessment Security Audits Incident Response Logging Agent Sensor Deployment Security Awareness Training On Premises Security Guidance

Incident Manager – SOC/NOC Ops

Huawei Technologies Ltd

May 2018 - Sep 2021 (3 years 4 months)

Managed 24/7 security and network monitoring operations, applying ITIL-based incident and change management to align IT KPIs with SLA targets. Conducted forensic investigations to determine root cause and implemented corrective security controls across network elements.