IT Infrastructure Engineer (Unix) - (Public Sector)

Responsibilities

• Implement Unix-based infrastructure projects within their established practice to ensure service delivery and support to meet the intended availability, continuity and capacity requirements.
• Translate business requirements into Unix infrastructure design solutions.
• Work with service providers to design, develop, deploy and configure Unix infrastructure to meet resiliency, availability and data integrity needs.
• Ensure compliance to Authority's Technical Architecture and SG-TRM, as well as IM8 and Authority IT Policies for Unix environments.
• Manage Unix Infrastructure operations, projects and services to support application systems environments.
• Request to provision new Unix VMs for new systems deployment.
• Manage Unix system architecture, resource planning, infrastructure performance and system hosting environment from server hardware to Unix OS layer (excluding hypervisor and storage) in support of new applications.
• Serve as main Unix infrastructure single-point-of-contact for all new application system initiatives and to support/assist in application architecture design, integration and acceptance and Unix infrastructure performance testing.
• Handover Unix Infrastructure and Systems standard operating procedures and day-to-day performance/availability monitoring to Operations Engineer upon commissioning and completion of PGP.
• Support Operations Engineer on Unix Infrastructure and Systems troubleshooting and maintenance.
• Assist in Unix Infrastructure Architecture review, support and endorsement. Review Unix hardening standards for OS, database and applications.
• Unix hosting environment infrastructure on-boarding (design, setup, configuration, implementation, testing and commissioning of Unix infrastructure components).
• Understand Unix systems operations environment including monitoring, patching, and maintenance procedures.
• Take care of end to end Unix operations and integrations with client machines.
• Expert proficiency with Unix systems and enterprise management tools, including:
• Red Hat Identity Management (IDM)
• IDM replica management and high availability configuration
• LDAP directory services integration and management
• Kerberos authentication and Single Sign-On (SSO) implementation
• Certificate Authority (CA) management within IDM
• Red Hat Satellite Server and Capsule deployment and management
• Satellite Capsule configuration for distributed content management
• Content lifecycle management and patch deployment via Satellite
• Configuration management and compliance reporting through Satellite
• Unix/Linux system provisioning and automated deployment
• Shell scripting (Bash, Python) for automation and system management
• Unix clustering and high availability solutions (Pacemaker, Corosync)
• Unix security hardening and compliance frameworks
• Government Commercial Cloud (GCC) Unix infrastructure management

Requirements:
• Tertiary Education in Computer Science, Information Technology, or relevant technical fields is preferred.
• Minimum 3-5 years hands-on experience in Unix/Linux environments (RHEL, CentOS, AIX), including Unix OS virtualisation technologies, familiarity on Unix-based SAN storage integration and Unix database systems (Oracle, PostgreSQL, MySQL).
• Strong expertise in Red Hat technologies including RHEL, Red Hat Satellite, Red Hat Identity Management, and Red Hat clustering solutions.
• Proficiency in Unix/Linux system administration, shell scripting, automation tools, and configuration management systems (Ansible, Puppet, Chef).
• Experience with Identity Management systems, LDAP directories, Kerberos authentication, and enterprise SSO solutions.
• Knowledge of Red Hat Satellite architecture, content management, and distributed Capsule server deployment.
• Ability to take a broad, strategic perspective on Unix infrastructure whilst drilling deep to understand business needs and technical challenges.
• Ability to analyse and identify comprehensive Unix-based solutions considering all functional implications while developing workable solutions.
• Results and customer oriented with focus on Unix service delivery excellence.
• Team player with strong organisation and people handling skills in Unix project environments.
• Excellent communication skills, both oral and written, with the ability to present Unix technical solutions and influence stakeholders.
• Relevant Red Hat certifications (RHCSA, RHCE, RHCA) and Unix vendor certifications would be advantageous.
• Experience with Unix monitoring tools (Nagios, Zabbix, Red Hat Insights) and Unix troubleshooting methodologies.
• Understanding of containerisation technologies (Docker, Podman) and orchestration platforms (OpenShift, Kubernetes) in Unix environments.

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