System Administrator

We are seeking a skilled and proactive Unix/Linux Administrator with 6–8 years of hands-on experience in managing enterprise Unix/Linux environments. The ideal candidate will have strong expertise in Red Hat, AIX, and Solaris systems, along with a good understanding of VMware ESX / Network / Storage technologies. This role is focused on ensuring system resilience through effective service recovery, disaster recovery (DR) testing, and root cause analysis (RCA) of incidents.

·      Perform service recovery for Unix/Linux systems to ensure minimal downtime and business continuity.

·      Troubleshoot OS, CPU, memory, filesystem, network, and performance-related issues.

·      Manage production incidents and participate in incident recovery and root cause analysis.

·      Conduct Disaster Recovery (DR) testing in coordination with business and infrastructure teams.

·      Monitor server health, capacity, availability, and performance.

·      Involved in Root Cause Analysis (RCA) investigations for critical incidents.

·      Administer and maintain servers (Red Hat, AIX, Solaris) in production and DR environments.

·      Coordinate with application, database, network, storage, and other infrastructure teams.

·      Maintain operational procedures, technical documentation, and knowledge articles.

·      Provide 24x7 on-call support during assigned shifts and respond to severity 1 incidents under pressure.

·      Communicate effectively with stakeholders during high-impact incidents and recovery efforts.

·      Worked with L1 in monitoring system performance and proactively addressing potential issues.

 Key Domain/ Technical Skills:

·      RedHat Linux, AIX, Solaris Operating System.

·      VMware ESX, Network, Storage.

·      Geneos, Splunk, Scripting is a plus. 

Required Skills

·      Degree/Diploma in Information Technology/Computer Science or equivalent

·      6–8 years of experience in Unix/Linux system administration and production support.

·      Strong Unix/Linux administration and troubleshooting skills.

·      Knowledge of filesystem/LVM, processes, services, networking, user administration, and shell scripting.

·      Experience with Incident, Problem, and Change Management processes.

·      Good analytical, troubleshooting, communication, and coordination skills.

Good to Have:

·      Good knowledge of ITIL processes, incident management and RCA methodologies.

·      VMware/virtualization knowledge.

·      Storage technologies such as SAN, LUN, and multipathing.

·      Experience working in a bank is a plus

EA License Number: 23C2060 | EA Registration ID: R26161060

Quess Selection & Services, Singapore

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This is in partnership with the Employment and Employability Institute Pte Ltd (e2i).

e2i is the empowering network for workers and employers seeking employment and employability solutions. e2i serves as a bridge between workers and employers, connecting with workers to offer job security 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 the National Trades Union Congress set up to support nation-wide manpower and skills upgrading initiatives. By applying for this role, you consent to Quesscorp Singapore's PDPA and e2i's PDPA. By submitting your application for this position, you consent to the collection, use, and disclosure of your personal data by Quesscorp and its recruitment partners, including Employment and Employability Institute Pte Ltd, for the purpose of i) employment facilitation and ii) data and statistical analysis. You may find out more information on the PDPA policies at Quesscorp website and [https://www.e2i.com.sg/pdpa/].