System Administrator

Ensign InfoSecurity; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Ensign InfoSecurity is seeking an experienced cybersecurity operations professional to provide onsite preventive maintenance, manage platforms, and drive system improvements for enhanced security and performance. You will handle vulnerabilities, patching, and SOP maintenance while coordinating with vendors and contractors.

The role requires strong IT/cybersecurity operations experience, system administration skills, and relevant certifications.

Qualifications

• 2+ years of experience in IT/cybersecurity operations, managed services, and/or system management.
• Knowledge of system administration and vulnerability management.
• Certifications: at least one intermediate level vendor product certification or IT cybersecurity basics.

Responsibilities

• Provide onsite preventive maintenance support and manage cybersecurity platforms.
• Support and manage infrastructure and systems to improve performance and security.
• Address and remediate vulnerabilities detected in systems.
• Develop and maintain SOPs for patching, upgrades, onboarding of assets and routine maintenance.
• Log and manage support cases with vendors and contractors, coordinating troubleshooting and resolutions.
• Take ownership of incidents and tasks, ensuring timely resolution and closure.
• Perform periodic system health checks and review alerts with 3rd party contractors.
• Perform system maintenance activities including patching and plugin updates.
• Manage capacity, assets, configurations, access, changes, backups and security of assigned systems.
• Ensure compliance with internal policies and client requirements.

Skills

IT operations

Cybersecurity operations

System administration

Vulnerability management

Change management

Asset and configuration management

Capacity management

Backup management

Vendor coordination

Tools

ITIL Foundation

Security certifications

Job description

• Provide onsite preventive maintenance support
• Support and manage various cybersecurity platforms, support infrastructure and systems
• Drive system improvements and enhancements that will improve system performance, effectiveness and security
• Address and remediation system vulnerabilities detected
• Develop and maintain operational documentation, including SOPs for patching, upgrades, onboarding of assets and routine maintenance.
• Log and manage support cases with vendors and maintenance contractors, including coordinating troubleshooting sessions and driving resolution.
• Take full ownership of assigned incidents and tasks, ensuring timely resolution and closure.
• Perform periodic system health checks, and work with 3rd party contractors responsible for comprehensive maintenance to review, address and resolve system alerts, error and issues detected
• Perform system activities when required, including patching, plug-in updates and other system maintenance.
• Perform Capacity Management, Asset and Configuration Management, Account and Access Management, Change Management, Backup Management and Security Management of the assigned systems
• Ensure all activities comply with internal policies, client requirements, and documentation standards.
• Perform stand-by after office hours
• Support Major Operational Events such as power maintenance, DR exercises

Requirements

• Experience: At least 2 years of relevant experience in IT/cybersecurity operations, managed services, and/or system management. Exposure to public sector, large local enterprises, local CII and/or global enterprises is an advantage.
• Operational Expertise: Experience and knowledge in system administration, asset and configuration management, change management, account and asset management, backup management, capacity management, vulnerability management and system health checks.
• Technical Knowledge: Good system administration competencies in cybersecurity solutions in at least one of the following domains:
• Infrastructure Security
• Data Security
• Security Governance
• Security Analytics or Security Operation Centre (SOC)
• Access and Identity
• Certifications:
• Required – at least one security vendor product certification at intermediate level, ITIL Foundation or basic certification in cybersecurity (including ISC2 Certified in Cybersecurity, CompTIA Security+)
• Advantaged – security vendor product certifications at advanced level
• Experience working with vendor support and managing escalation processes.
• Effective communication and stakeholder management skills, with the ability to provide clear updates to clients.
• Basic project coordination skills and the ability to manage multiple priorities.
• Customer-oriented mindset with a strong sense of ownership and accountability.
• Willingness to be on standby after support hours as part of operational requirements.