Senior Systems Engineer [RHEL]

Job Description

We're looking for a detail-oriented and analytically-minded Senior Systems Engineer with deep expertise in Red Hat Enterprise Linux (RHEL) to join our organization in Singapore. In this role, you will design, implement, and maintain robust Linux-based infrastructure that supports our enterprise operations. You will work collaboratively with cross-functional teams to ensure system reliability, security, and optimal performance while mentoring junior engineering staff and driving continuous improvement initiatives.

What will you do?

• Design, deploy, and manage RHEL-based infrastructure solutions that meet organizational requirements and industry best practices
• Perform system administration tasks including user management, access control, patch management, and security hardening
• Troubleshoot complex technical issues efficiently and systematically, documenting root causes and implementing preventative solutions
• Develop and maintain automation scripts and tools using Bash, Python, or similar languages to improve operational efficiency
• Monitor system performance, capacity, and availability; analyze metrics and implement optimization strategies
• Collaborate with application teams, database administrators, and network engineers to ensure seamless system integration
• Implement and maintain configuration management solutions to ensure consistency across infrastructure environments
• Provide technical guidance and mentoring to junior systems engineers and support staff
• Document system architectures, configurations, procedures, and runbooks for organizational knowledge management
• Stay current with RHEL updates, security patches, and emerging technologies relevant to enterprise Linux systems

Qualifications

The ideal candidate should possess:

• Due to government project sensitivity, we will only consider Singapore Citizen
• 7+ years of hands-on experience administering and supporting Red Hat Enterprise Linux systems in production environments
• Strong expertise in Linux system administration, including kernel tuning, package management, and system optimization
• Proficiency in scripting languages such as Bash, Python, or Perl for automation and system management
• Demonstrated experience with infrastructure architecture and design principles
• Advanced troubleshooting and problem-solving capabilities with strong analytical skills
• Experience with configuration management tools such as Ansible, Puppet, or Chef
• Knowledge of enterprise security practices, including firewall management, SELinux, and access controls
• Excellent organizational and documentation skills with attention to detail

**Preferred Skills & Experience:**

• Red Hat Certified Engineer (RHCE) or Red Hat Certified System Administrator (RHCSA) certification
• Experience with containerization technologies including Docker and Kubernetes
• Familiarity with cloud platforms such as AWS, Azure, or OpenStack
• Knowledge of virtualization technologies such as KVM or VMware
• Experience with monitoring and logging solutions such as Prometheus, ELK Stack, or Splunk
• Background in DevOps practices and CI/CD pipeline implementation
• Experience with storage solutions and backup/disaster recovery strategies

Additional Information

We are driven by our AEIOU beliefs—Adventure, Excellence, Integrity, Ownership, and Unity—and we seek individuals who embody these values in both their professional and personal lives. We are committed to our Impact: Valuing our clients, Growing our people, and Creating our future.

Together, we make the extraordinary happen.

Learn more about us at ncs.co and visit our LinkedIn career site.

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