RHEL L3 Engineer (24/7 on-call rotation Support)
NTT Data Singapore Singapore, Singapore
IT Services and IT Consulting · 10,001+ employees
About the role
The L3 Engineer will manage mission-critical RHEL operations, including kernel patching, performance tuning, and disaster recovery. They will also participate in a 24/7 on-call rotation to provide incident response and maintenance support for enterprise infrastructure.
What they look for
Requirements
Candidates must have over 10 years of hands-on RHEL experience in mission-critical environments and proficiency in virtualization and cloud platforms. Strong analytical skills and familiarity with ITSM processes are required to collaborate effectively within a geographically dispersed team.
Full description
.10+ years of hands-on experience in Red Hat Enterprise Linux (RHEL) operations, with at least 5 years in mission-critical environments (24/7 uptime, 500+ servers).
· Willingness to participate in rotational on-call support (including nights/weekends) for critical incident response and maintenance activities.
· Strong understanding of Service Level Agreements (SLAs), Recovery Time Objectives (RTO), and Recovery Point Objectives (RPO) in an enterprise IT environment.
· Hands-on experience with infrastructure monitoring tools (e.g., SolarWinds, PRTG) for performance tracking and proactive issue resolution.
· Proven ability to work in multicultural, geographically dispersed teams (APAC experience preferred).
· Intermediate-level knowledge of ITSM processes (Incident, Change, Problem, and Service Request Management) and experience with ITSM tools (e.g., ServiceNow)
· Must be able to work independently and in collaboration with various stakeholders as part of an APAC team e.g. DCS-related planning and implementation, security teams, service management teams, application teams, country IT teams and others
· Fluent business English (written and spoken) for technical documentation, stakeholder communication, and incident reporting.
· Deep expertise in RHEL 7/8/9 (installation, hardening, tuning, troubleshooting), including kernel patching and disaster recovery.
· Adept in virtualization knowledge (VMware vSphere, Nutanix AHV) for resource optimization, clustering, and high-availability configurations.
· Working knowledge of cloud platforms (Azure/AWS) for hybrid infrastructure management (IaaS)
· Strong analytical and problem-solving skills, with the ability to diagnose and resolve complex technical issues under pressure.
· Industry certifications (e.g., RHCE, RHCSA, or equivalent) are highly desirable.
· Hands-on experience with SELinux, CIS benchmarks, vulnerability remediation, and audit logging (e.g., Auditd).
