SAMUEL O. CHUKWUKWA
Kettering,United Kingdom
Summary
Cybersecurity professional with expertise in Google Chronicle, Microsoft Sentinel, CrowdStrike Falcon, and Darktrace. Proficient in incident response, digital forensics, and threat hunting, with strong skills in MITRE ATT&CK mapping and IOC correlation. Experienced in vulnerability management, risk reporting, and compliance with ISO 27001 and NIST CSF. Focused on enhancing security posture through ethical hacking, cybersecurity consultation, and training delivery aligned with industry standards.
Overview
8
8
years of professional experience
2009
2009
years of post-secondary education
1
1
Certification
Work history
Senior Cyber Security Analyst (Contract)
Optum UK/ UHG
2025.01 - 2026.03
- Lead security investigations within healthcare-focused enterprise environment using Google Chronicle SecOps.
- Designed and tuned detection rules aligned to MITRE ATT&CK framework to improve threat visibility across cloud and on-prem assets.
- Investigated BEC, phishing, lateral movement, credential abuse and anomalous authentication activities.
- Developed and optimized SOAR playbooks reducing manual triage effort and improving MTTR.
- Collaborated with engineering teams to onboard and normalise log sources into Chronicle for enhanced detection coverage.
- Provided technical briefings and risk summaries to senior stakeholders and Principal Security Analysts.
- Supported security transition planning during organizational restructuring and EMIS divestment discussions.
Senior SOC Analyst (Shift Lead)
Acora Ltd
2023.09 - 2024.12
- Led 24/7 SOC operations ensuring proactive detection, containment, and remediation of cyber threats.
- Investigated complex incidents using Google Chronicle SecOps and CrowdStrike Falcon.
- Designed and maintained SOAR playbooks, automating triage and response for recurring alerts.
- Performed host-based forensics and delivered evidence-backed incident reports to management.
- Tuned Chronicle detections and correlation rules mapped to MITRE ATT&CK techniques.
- Administered Azure AD / Entra ID, including Conditional Access, PIM, and RBAC.
- Delivered internal awareness sessions on emerging threats and incident trends.
Senior SOC Analyst
Skipton Building Society
2022.07 - 2023.08
- Oversaw daily incident response activities and Tier2 escalations.
- Enhanced detection logic for insider threat and privilege escalation in Microsoft Sentinel.
- Collaborated with IT teams on vulnerability remediation and patch validation.
- Conducted phishing investigations, including email header analysis and sandboxing.
- Improved SOC playbooks and incident documentation processes.
SOC Analyst
Bank of Ireland
2020.03 - 2022.06
- Monitored SIEM dashboards and IDS/IPS alerts to identify suspicious activity.
- Performed vulnerability scans and validated remediation efforts.
- Investigated DLP and phishing incidents, including malware sandbox analysis.
- Authored post-incident reports and contributed to internal threat intelligence knowledge base.
- Participated in proactive threat hunting activities using MITRE ATT&CK.
Cyber Security Analyst
NBC Universal
2018.05 - 2020.02
- Supported email security operations using Proofpoint and Mimecast gateways.
- Maintained endpoint security compliance and vulnerability tracking.
- Collaborated with global IR teams to contain and remediate compromised endpoints.
- Supported documentation and reporting for security operations.
Education
Bachelor of Science (B.Sc.) - Engineering
Federal University of Technology
Skills
- Google Chronicle SecOps (SIEM & SOAR)
- Microsoft Sentinel and Defender Suite
- CrowdStrike Falcon, Darktrace, Proofpoint
- Incident response
- Digital forensics
- Detection engineering (MITRE ATT&CK mapping)
- Threat hunting
- Entra ID (conditional access, PIM, RBAC)
- Vulnerability management
- Risk reporting
- ISO 27001 compliance
- NIST CSF alignment
- Real-Time system monitoring
- IoTsecurity
- Malware analysis and reversing
- Encryption technology utilisation
- Malware identification and removal
- Security log analysis
- Computer forensic tools familiarity
- Digital forensics understanding
- Compliance monitoring proficiency
- Incident response coordination
- Risk assessment proficiency
- Cloud computing security knowledge
- Wireless network security
- Data loss prevention knowledge
- Vulnerability assessment competencies
- Cyber threat perception
- Cryptography understanding
- Risk analysis
Websites
Certification
- CompTIA CySA+ (CS0003)
- CompTIA Security Analytics Professional (CSAP) – Stackable
- CompTIA Security+
- Microsoft AZ900: Azure Fundamentals
- Microsoft SC200: Security Operations Analyst
- Chronicle Certified SOAR Analyst (CCSA)
- Chronicle SOAR Fundamentals v6 (CSFv6)
- Incident Response in Microsoft Cloud & AWS
- AWS Networking Core Knowledge
Accomplishments
- Reduced false positives by 30% through detection tuning and MITRE ATT&CK mapping.
- Cut Mean Time to Respond (MTTR) by 40% via SOAR automation and streamlined escalations.
- Improved phishing detection by 35% using Chronicle enrichment and IOC correlation.
- Delivered quarterly threat intelligence briefings improving executive risk visibility.
- Mentored Tier1 analysts, improving triage accuracy and investigation quality.
Personal Information
Title: Senior Cyber Security Analyst
References
Available upon request
Languages
English
Fluent
Timeline
Senior Cyber Security Analyst (Contract)
Optum UK/ UHG
2025.01 - 2026.03
Senior SOC Analyst (Shift Lead)
Acora Ltd
2023.09 - 2024.12
Senior SOC Analyst
Skipton Building Society
2022.07 - 2023.08
SOC Analyst
Bank of Ireland
2020.03 - 2022.06
Cyber Security Analyst
NBC Universal
2018.05 - 2020.02
Bachelor of Science (B.Sc.) - Engineering
Federal University of Technology