Lead System Engineer

Rapsys Technologies Pte Ltd.; Singapore; On-site; SGD 120,000 - 150,000; Full time

Job summary

Rapsys Technologies Pte Ltd. is seeking a Lead System Engineer with strong Windows Server and Red Hat Enterprise Linux (RHEL) expertise.

You will design, deploy, and manage enterprise IT infrastructure across on-premises and hybrid environments, lead automation initiatives, and guide incident response while ensuring security hardening and compliant operations. The role requires hands-on experience in system administration, virtualization, storage, and scripting with PowerShell, Bash, and Python.

Qualifications

• Windows Server and RHEL administration experience.
• Experience with patching, security hardening, and access controls.
• Scripting in PowerShell, Bash, and Python.
• Experience with virtualization and storage technologies.
• ITIL Foundation certification is required.

Responsibilities

• Design, deploy, and manage Windows Server and RHEL infrastructure in on-premises and hybrid environments.
• Perform system administration tasks including user management, access controls, patch management, and security hardening.
• Develop automation scripts using PowerShell, Bash, and Python.
• Monitor system performance and optimize infrastructure for availability and resource utilization.
• Troubleshoot complex system and infrastructure issues and provide timely resolutions.
• Manage virtualization platforms and storage solutions, including configuration and capacity planning.
• Collaborate with cross-functional teams on infrastructure changes and upgrades.
• Maintain detailed technical documentation covering system configurations, procedures, and architecture.
• Conduct security assessments and implement infrastructure security best practices.
• Participate in incident management and provide on-call support when required.
• Stay updated with emerging technologies and recommend infrastructure improvements.

Skills

Windows Server

Wintel administration

RHEL

Linux

System Administration

PowerShell

Bash

Python

Patch Management

Security Hardening

Virtualization

Storage

System Monitoring

Troubleshooting

ITIL

CyberArk

QRadar

Education

ITIL Foundation certification

Tools

IBM AIX

IBM Spectrum Protect

RSA security solutions

Symantec EDR

QRadar

IBM Tivoli Monitoring

Job description

We're Hiring: Lead System Engineer!

Lead System Engineer - Windows & RHEL

We are looking for an experienced Lead System Engineer with strong expertise in Windows Server and Red Hat Enterprise Linux (RHEL). The ideal candidate should have hands-on experience in system administration, infrastructure management, automation, security hardening, troubleshooting, and enterprise IT operations.

Location:Project Site, Singapore
Role: Lead System Engineer - Windows & RHEL
Work Mode: Work from Office

What You'll Do:

• Design, deploy, configure, and manage Windows Server and RHEL infrastructure in on-premises and hybrid environments.
• Perform system administration activities including user management, access controls, patch management, and security hardening.
• Develop automation scripts using PowerShell, Bash, and Python.
• Monitor system performance and optimize infrastructure for availability and resource utilization.
• Troubleshoot complex system and infrastructure issues and provide timely resolutions.
• Manage virtualization platforms and storage solutions, including configuration and capacity planning.
• Collaborate with cross-functional teams on infrastructure changes and upgrades.
• Maintain detailed technical documentation covering system configurations, procedures, and architecture.
• Conduct security assessments and implement infrastructure security best practices.
• Participate in incident management and provide on-call support when required.
• Stay updated with emerging technologies and recommend infrastructure improvements.

What We're Looking For:

Strong hands-on experience in Windows Server / Wintel administration and management - Must Have.

Hands-on experience with Red Hat Enterprise Linux (RHEL) - Must Have.

Strong system administration and infrastructure troubleshooting skills.

Experience with PowerShell, Bash, and Python scripting/automation.

Good knowledge of patch management, security hardening, access control, and system monitoring.

Experience with virtualization and storage technologies.

Excellent written and verbal communication skills.

Strong team coordination and collaboration skills.

Good stakeholder engagement and presentation skills.

Strong time management and ability to prioritize tasks and meet deadlines.

Ability to create detailed and accurate technical documentation.

ITIL Foundation certification - Must Have.

Good to Have:

Experience with IBM AIX administration.

Knowledge of IBM Spectrum Protect for backup and recovery.

Familiarity with CyberArk Privileged Access Management.

Experience with IBM QRadar SIEM.

Knowledge of Symantec EDR.

Experience with IBM Tivoli Monitoring.

Familiarity with RSA security solutions.

Experience in vulnerability remediation tracking and management.

Experience:

3-5 years of experience in IT infrastructure administration, operations, or support roles.

Key Skills:

Windows Server | Wintel | RHEL | Linux | System Administration | PowerShell | Bash | Python | Patch Management | Security Hardening | Virtualization | Storage | System Monitoring | Troubleshooting | ITIL | IBM AIX | CyberArk | QRadar