# Senior Wintel Security Engineer / Infrastructure Security Enginee

> Unison Group · Kuala Lumpur, Malaysia · Full-time · Posted 2026-07-09

**Salary:** unknown currency 3,000–6,000

**Workplace:** on_site

**Department:** Noresh

## 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

## Apply

[Apply at Unison Group](https://apply.workable.com/unisongroup/j/72A545ACF4/apply)

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