Senior Systems Engineer [RHEL]

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

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