Senior Wintel Security Engineer / Infrastructure Security Enginee

Unison Group; Kuala Lumpur; On-site; MYR 120,000 - 190,000; Full time

Job summary

Unison Group is seeking a Senior Wintel Security Engineer to strengthen enterprise Windows and network infrastructure. The role focuses on Windows Server Administration, Active Directory, vulnerability remediation, and PowerShell automation to enforce security standards.

The ideal candidate will lead remediation efforts, implement security best practices, and ensure CIS/NIST/DISA STIG, PCI-DSS, and HIPAA compliance across the environment. Mentorship and SOP documentation are included.

Qualifications

• Experience in Windows Server Administration, Active Directory, vulnerability remediation, and security automation.
• Proficient in PowerShell; Python preferred for automation.
• Familiarity with CIS, NIST, DISA STIG, PCI-DSS, and HIPAA security standards.

Responsibilities

• Lead vulnerability assessment and remediation across enterprise infrastructure.
• Harden Windows Servers following Microsoft security best practices.
• Configure and manage Group Policies (GPO).
• Implement Windows Defender and Firewall security configurations.
• Secure Cisco, Juniper, and Palo Alto network devices.
• Perform vulnerability remediation using Nessus and Qualys reports.
• Develop automation scripts using PowerShell.
• Monitor infrastructure using SIEM tools.
• Support incident response and security investigations.
• Perform patch management and system hardening.
• Prepare technical documentation and SOPs.
• Mentor junior engineers and provide technical leadership.

Skills

Vulnerability Assessment

Vulnerability Remediation

Windows Server Admin

Active Directory

PowerShell

Python

SIEM

Incident Response

Network Security

Security Hardening

GPO

Cloud Security

Tools

Nessus

Qualys

CrowdStrike

McAfee

Splunk

QRadar

SCCM

WSUS

Cisco

Juniper

Palo Alto

Windows Defender

Windows Firewall

Job description

Senior Wintel Security Engineer / Infrastructure Security Engineer

Location: Malaysia

Experience: 8+ Years

Job Summary

We are seeking an experienced Senior Wintel Security Engineer to strengthen and secure enterprise Windows and network infrastructure. The ideal candidate will have extensive experience in Windows Server Administration, Active Directory, vulnerability remediation, PowerShell automation, and network security. The role involves leading remediation activities, implementing security best practices, and ensuring compliance with enterprise security standards.

Key Responsibilities

• Lead vulnerability assessment and remediation across enterprise infrastructure.
• Harden Windows Servers using Microsoft security best practices.
• Configure and manage Group Policies (GPO).
• Implement Windows Defender and Firewall security configurations.
• Secure Cisco, Juniper, and Palo Alto network devices.
• Perform vulnerability remediation using Nessus and Qualys reports.
• Develop automation scripts using PowerShell.
• Monitor infrastructure using SIEM tools.
• Support incident response and security investigations.
• Perform patch management and system hardening.
• Ensure compliance with CIS, NIST, DISA STIG, PCI-DSS, and HIPAA standards.
• Mentor junior engineers and provide technical leadership.
• Prepare technical documentation and standard operating procedures (SOPs).

Mandatory Technical Skills

Windows Infrastructure

• Windows Server 2016/2019/2022
• Active Directory
• Group Policy (GPO)
• Windows Defender
• Windows Firewall

Security

• Vulnerability Assessment
• Vulnerability Remediation
• Nessus
• Qualys
• Security Hardening

Networking

• TCP/IP
• VLAN
• VPN
• Routing
• Cisco
• Juniper
• Palo Alto

Automation

• PowerShell
• Python (preferred)

Monitoring

• SIEM
• Incident Response

Preferred Skills

• AWS
• Azure
• CrowdStrike
• McAfee
• Splunk
• QRadar
• SCCM
• WSUS
• Hybrid Cloud
• Secure Architecture Design