Unix System Engineer

Remote role (Work from home)

Singapore client

Offshore role

Working hours and public holidays as per Singapore

1 yr Renewable contract

Job Overview

We are looking for a Senior System Engineer to provide support, administration, and maintenance of Unix/Linux environments. The role involves ensuring system performance, availability, security, and supporting both BAU operations and project implementations.

Key Responsibilities

• Install, configure, and maintain Unix/Linux servers (Oracle Solaris 11.x, RHEL 8/9 – Physical & Virtual).
• Monitor system performance and troubleshoot server, OS, and hardware issues .
• Perform OS patching, upgrades, and system hardening to ensure security compliance.
• Develop and maintain Ansible playbooks for automation of routine tasks.
• Provide L2/L3 support and escalation for incidents and problem tickets.
• Support BAU operations and project implementations across infrastructure environments.
• Work closely with vendors to resolve hardware/software issues.
• Manage security vulnerability assessments and remediation .
• Maintain documentation for system configurations, deployments, and processes .
• Provide technical guidance and mentoring to junior engineers.
• Participate in on-call rotation (24/7 support) and maintenance activities.
• Collaborate with cross-functional IT teams for project delivery and support.

Required Skills & Experience

• 3–5 years of experience in Unix/Linux system administration
• Strong expertise in:
• Red Hat Enterprise Linux (RHEL 7/8/9)
• Oracle Solaris 11.x (including LDOM/Control Domain concepts)
• Hands-on experience with:
• Server administration (Physical & Virtual)
• Patch, configuration, and compliance management
• NAS, SAN, backup systems, and infrastructure monitoring tools
• Experience in Ansible automation
• Strong troubleshooting and problem-solving skills
• Experience working with enterprise infrastructure environments

Good to Have

• Exposure to Windows, VMware, Fusion Compute
• Experience in project implementation and project management
• Strong vendor management experience

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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