Key Responsibilities
· Demonstrate strong expertise inRHEL system administration, including installation, configuration, hardening,and lifecycle management of Linux servers to ensure security, performance, andhigh availability.
· Design, implement, and manageLinux clustering solutions, including Pacemaker clusters and IBM GPFS (SpectrumScale) for high availability, scalability, and performance in on‑premises environments.
· Monitor, troubleshoot, andoptimize Linux infrastructure, covering compute, storage (including GPFS),networking, and security components.
· Leverage operational experienceto design and implement infrastructure improvements that enhance systemsecurity, stability, performance, and operational efficiency.
· Develop, maintain, andcontinuously improve configuration management solutions using Ansible toautomate provisioning, configuration, patching, and standard operational tasks.
· Design, implement, and maintainautomation playbooks and scripts using Ansible to streamline repetitive tasks,deployments, cluster operations, and configuration management.
· Work closely with application,middleware, and storage teams to ensure seamless integration of Linux systemsand GPFS storage with business applications and services.
· Ensure Linux systems andclustering environments comply with internal security policies, industrystandards, and regulatory requirements.
· Proactively monitor system andcluster performance and conduct capacity planning to anticipate resource needsand ensure optimal performance.
· Troubleshoot complex system,cluster, and storage incidents, manage escalations, and coordinate with vendors(including Red Hat and IBM) for advanced support as required.
· Plan and execute scheduledpreventive maintenance, including OS patching, upgrades, cluster maintenance,and system hardening activities.
· Perform system and performancetuning, optimization, and capacity planning across standalone and clusteredLinux environments.
· Fulfil service requests andchange requests in line with established ITSM and change management processes.
· Manage and support VMwarevirtualized environments hosting Linux workloads.
· Collaborate with cross‑functional teams and external vendors to support operational activitiesand project deliverables.
· Provide day‑to‑day Linux system administrationand operations support, including participation in 24x7 standby/on‑call rotation.
· Provide technical input, designreviews, and advisory support for infrastructure and application projects.
· Maintain accurate and up‑to‑date system, cluster, and configuration documentation.
Required Experience & Skills
· 8+ years of relevant workingexperience as a Unix administrator in on premise setup.
· Strong technical knowledge andexperience in administration and maintenance of Linux.
· Excellent communication andstakeholder management skills.
· Strong background in Unixtechnologies including High Availability and virtualization.
· Storage admin/SAN technology fromsystem perspective.
· Familiarity with ITSM, ITIL, orother relevant frameworks is a plus.
· Proven ability to identify andimprove performance measurement and reporting processes in a largeorganization.
· Experience of workingcollaboratively with multi-disciplinary teams with a delivery focus in bothproject and operational environments
· Excellent spoken and writtenBusiness English skills and the ability to write clear and concise text fordifferent audiences.
· Ability to handle confidentialinformation with tact and sensitivity.
A flexible approach to adapt to changingdeadlines.
Thanks,
Saghana Sithara
BusinessManager, Recruitment| Quess Selection & Services, Singapore
EA LicenseNumber: 23C2060 Registration ID is R1550224
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“This is in partnership with the Employment andEmployability Institute Pte Ltd (“e2i”).
e2i is the empowering network for workers andemployers seeking employment and employability solutions. e2i serves as abridge between workers and employers, connecting with workers to offer jobsecurity through job-matching, career guidance and skills upgrading services,and partnering employers to address their manpower needs through recruitment,training, and job redesign solutions. e2i is a tripartite initiative of theNational Trades Union Congress set up to support nation-wide manpower andskills upgrading initiatives. By applying for this role, you consentto Quesscorp Singapore’s PDPA and e2i’s PDPA.”
