Senior Systems Specialist / System Specialist (LINUX / UNIX Platform)

The Job: The successful candidates will be responsible for providing technical services covering solution design, project implementation, systems support and day-to-day operations on System Platforms (LINUX / UNIX Platform ) for projects in government and enterprise. The successful candidate will have: Key Responsibilities Container Platform Management: Design, deploy, scale, and maintain enterprise container orchestration platforms (Red Hat OpenShift, Kubernetes, and Docker) across on-premise and hybrid cloud environments. UNIX/Linux Infrastructure Operations: Provide administration, performance tuning, patching, and troubleshooting of enterprise Linux distributions (RHEL, Oracle Linux, Euler Linux) and legacy UNIX platforms (AIX) supporting our container backends. Government Compliance & Security Hardening: Ensure all containerized workloads, clusters, and underlying UNIX/Linux hosts strictly comply with HKSAR Government security regulations, Baseline IT Security Guidelines (GSI), and container security best practices (image vulnerability scanning, RBAC, network policies). CI/CD & Automation: Collaborate with development teams to build robust CI/CD pipelines, containerize legacy and microservices applications, and automate infrastructure provisioning using tools like Ansible, Terraform, and Helm. High Availability & Disaster Recovery: Configure clustering, persistent storage integrations (CSI), ingress controllers, and backup strategies to guarantee high availability (99.99%+) for critical public sector services. Incident & Problem Management: Serve as the Level 3 escalation technical expert for complex system and cluster-level issues, conducting root-cause analysis (RCA) and implementing durable corrective actions. Audit & Documentation: Maintain accurate architecture topologies, standard operating procedures (SOPs), and audit trails to support frequent government security risk assessments and audits (SRAA/ITSA). Requirements & Qualifications Education: Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or a related discipline. Experience: Minimum 6–8 years of hands-on experience in enterprise UNIX/Linux system engineering, with at least 3 years specializing in enterprise container platforms ( Kubernetes, Red Hat OpenShift, Docker ) within large-scale environments—preferably supporting HKSAR Government departments or public sector projects . Technical Expertise: Expert knowledge of Red Hat OpenShift Container Platform and upstream Kubernetes administration. Strong command of enterprise Linux (RHEL 7/8/9, CentOS, Rocky Linux) and core networking/protocols (TCP/IP, DNS, load balancing, ingress/egress). Proven experience with infrastructure automation and CI/CD tools (Ansible, Terraform, Helm, Gitlab CI/Jenkins). Familiarity with container security tools (e.g., Prisma Cloud, Aqua Security, Quay) and container registry management. Certifications: Professional certifications such as RHCSA / RHCE , CKA (Certified Kubernetes Administrator) , or Red Hat Certified Specialist in OpenShift Administration are highly preferred. Compliance & Standards: Prior working knowledge of government IT security audits, risk assessment methodologies, and secure software supply chain practices. Language Skills: Excellent command of written and spoken English and Cantonese . Strong interpersonal skills for interfacing directly with government clients, vendors, and cross-functional teams. Clearance: Must be a Hong Kong Permanent Resident and be willing to undergo background checks and government security clearance procedures as required.