Senior Cybersecurity & OT Security Engineer — Hands-On IR

Oxydata Software Sdn Bhd; Penang; On-site; MYR 180,000 - 240,000; Full time

Job summary

Oxydata Software Sdn Bhd is seeking a senior hands-on Staff Cybersecurity & OT Security Engineer to manage day-to-day security operations across enterprise IT and manufacturing/OT environments. This individual-contributor role requires investigation of alerts, incident response, vulnerability management, and risk assessment, with occasional travel to Korea and India.

You will personally investigate security alerts, respond to incidents, manage vulnerabilities, and support OT/ICS security

Qualifications

• 8+ years of information security experience in IT/security operations.
• At least 3 years in a senior hands-on individual-contributor role.
• Must have performed security investigations within the last 24 months.
• Hands-on incident response across validation, containment, eradication and recovery.
• Hands-on EDR/XDR alert triage and investigation experience.
• Experience in manufacturing/industrial/OT/ICS/SCADA security exposures.
• Working knowledge of ISO/IEC 27001, NIST CSF and IEC 62443.
• Fluent English and eligible to work in Malaysia.

Responsibilities

• Perform daily cybersecurity operations and threat triage.
• Investigate EDR/XDR alerts, including hash analysis and false positives.
• Monitor critical OT security events and respond to incidents.
• Handle security incidents from validation to post-incident reporting.
• Manage vulnerability reviews, risk-based prioritization and remediation tracking.
• Maintain security risk registers and support ISO 27001 readiness and audits.
• Review security aspects of OT/production network changes.
• Support OT network segmentation and monitoring improvements per IEC 62443.
• Lead security awareness and phishing simulations.
• Support third-party security assessments and pen-testing.

Skills

Incident response

EDR/XDR

Vulnerability management

OT/ICS/SCADA security

Threat intelligence

ISO/IEC 27001

NIST CSF

IEC 62443

CrowdStrike Falcon

SecureWorks Taegis

Microsoft 365 security

Tools

CrowdStrike Falcon

SecureWorks Taegis

Microsoft 365 security

Job description

Oxydata Software Sdn Bhd is seeking a senior hands-on Staff Cybersecurity & OT Security Engineer to manage day-to-day security operations across enterprise IT and manufacturing/OT environments. This individual-contributor role requires investigation of alerts, incident response, vulnerability management, and risk assessment, with occasional travel to Korea and India.

You will personally investigate security alerts, respond to incidents, manage vulnerabilities, and support OT/ICS security