RHEL L3 Engineer (24/7 on-call rotation Support)

NTT Data Singapore; Singapore; On-site; SGD 110,000 - 180,000; Full time

Job summary

NTT Data Singapore is seeking a RHEL L3 Engineer to support a 24/7 on-call rotation across a large RHEL environment. You will handle incident response, ensure uptime, and work with distributed APAC teams on security, changes, and service delivery.

You should bring 10+ years in RHEL operations, strong English communication, and cloud/virtualization experience with VMware vSphere and Nutanix AHV. RHCE/RHCSA are desirable, with a focus on robust DR and CIS benchmarks.

Qualifications

• 10+ years of hands-on experience in Red Hat Enterprise Linux (RHEL) operations.
• Willingness to participate in rotational on-call support, including nights and weekends.
• Strong understanding of SLAs, RTO, and RPO in enterprise IT environments.
• Hands-on with SolarWinds and PRTG for monitoring and proactive resolution.
• Experience in multicultural, geographically dispersed APAC teams.
• ITSM knowledge and ServiceNow experience.
• Able to work independently and with various stakeholders in an APAC team.
• Fluent business English for documentation and incident reporting.
• Deep RHEL expertise (RHEL 7/8/9, kernel patching, DR).
• VMware vSphere and Nutanix AHV virtualization knowledge.
• Cloud experience with Azure and AWS.
• Strong analytical and problem-solving skills; capable under pressure.
• RHCE/RHCSA or equivalent desirable; SELinux/CIS benchmarks/audit logging.

Responsibilities

• Participate in rotational on-call support for incident response.
• Maintain a 24/7 uptime posture across 500+ servers.
• Monitor systems with SolarWinds/PRTG and drive proactive resolutions.
• Collaborate with APAC teams across DCS, security, and country IT teams.
• Follow ITSM processes (Incident, Change, Problem, Service Request) using ServiceNow.

Skills

On-call rotation

SLA/RTO/RPO

APAC experience

ITSM concepts

Fluent business English

Analytical problem solving

Independent yet collaborative

RHEL troubleshooting

Kernel patching

Disaster recovery

Security/audit logging

Multitasking in live environments

Tools

SolarWinds

PRTG

ServiceNow

VMware vSphere

Nutanix AHV

Azure

AWS

Job description

RHEL L3 Engineer (24/7 on-call rotation Support)

Job Openings RHEL L3 Engineer (24/7 on-call rotation Support)

About the job RHEL L3 Engineer (24/7 on-call rotation Support)

.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).