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System Administrator

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Onsite

System Administrator

Ensign InfoSecurity

System Administrator

Skills

CybersecurityData AnalysisSystem & Network AdministrationITILChange Management

2 months ago

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Important information


Contract type:

Freelance / Contract

Location:

Singapore

Work mode:

Onsite

Published on:

21 August 2026

What they need


Key Responsibilities

  • 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
  • Endpoint 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.

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