Kumaresan Jayabal
Cyber Security Engineer @Air Sec
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WORK HISTORY
Cyber Security Engineer @Air Sec
Milton Keynes, GB
Conduct pre-gap analysis for Cyber Essentials and CE+ engagements, assessing client environments against scheme requirements and identifying remediation actions ahead of formal audits.• Lead and perform Cyber Essentials and Cyber Essentials Plus (CE+) technical audits, including validation of configurations, vulnerability checks, control testing, and audit evidence collection to ensure compliance.• Execute CE+ audit remediation verification, confirming vulnerabilities are resolved, misconfigurations corrected, and security controls are effective before assessment sign-off.• Deliver end-to-end vulnerability management using Qualys, covering discovery, risk-based prioritisation, remediation guidance, and validation of fixes across client systems.• Support one-off penetration testing engagements, analysing reports, advising on risk-based remediation, and validating implemented fixes.• Develop and maintain PowerShell automation to streamline vulnerability remediation and security hardening, improving efficiency and audit readiness.• Conduct regular client security and remediation review meetings, tracking vulnerability closure, reviewing residual risk, and providing actionable guidance.• Collaborate with client technical and management teams, translating audit findings and remediation requirements into clear, practical guidance aligned with business risk.• Produce and maintain accurate technical documentation and audit evidence to support CE/CE+ reporting, client assurance, and continuous security improvement.
EDUCATION
University of Hertfordshire
Master's degree, Cyber Security
Coimbatore Institute of Engineering and Technology (Official Page)
Bachelor of Engineering - BE, Electrical, Electronics and Communications Engineering
ABOUT KUMARESAN JAYABAL
I am a Cyber Security Engineer with over 6 years of experience working across enterprise security environments, specialising in vulnerability management, security operations, and compliance-driven security assessments. My professional background includes extensive hands-on experience with vulnerability identification, risk-based prioritisation, and remediation across Windows, Linux, network, and cloud environments, along with strong exposure to SOC operations, security monitoring, alert analysis, and incident investigation.I have delivered and supported Cyber Essentials and Cyber Essentials Plus assessments, working closely with organisations to validate endpoint security, user access controls, network configurations, and cloud security posture, while translating technical findings into clear, actionable remediation guidance. My technical expertise spans network security including firewalls, IDS, and IPS, penetration testing and vulnerability testing, operating system security, advanced persistent threats, social engineering and phishing awareness, disaster recovery, encryption techniques, and compliance frameworks such as ISO 27001, NIST, and PCI DSS. I have a strong networking foundation supported by a CCNA (Routing and Switching) certification, enabling me to analyse security issues at both infrastructure and network levels, and I am familiar with cloud computing infrastructure and security practices, particularly within Microsoft Azure environments. I hold a Master’s degree in Cyber Security and I am currently pursuing the Offensive Security Certified Professional certification, reflecting my commitment to developing an offensive-informed defensive mindset and continuously strengthening my technical depth. I am particularly interested in roles where I can apply hands-on security expertise to reduce real-world risk, improve organisational security posture, and contribute to effective, practical cybersecurity outcomes.
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