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Salary
$42k – $51k per year (gross)
Location
In office (Singapore)
Seniority
Senior · 5+ years exp
Employment
Contractor

First seen by Alion on Nov 5, 2026.

Overview
Company
Impact
Profile match
Sciente International is a Singapore-based business technology consulting and tech talent services firm focused on banking, financial services and insurance, offering AI and data engineering, governance, risk and compliance solutions and Dataiku implementations. Established in 2007, it combines consulting projects with technology talent services that place contract IT professionals with client organizations, and runs career trial and returner programmes. Its roles, advertised with JD reference numbers, include business and system analysts, Java and .NET developers, software testers, UI/UX designers, cybersecurity and cloud security engineers, database administrators and project managers.

Job Summary

We are looking for a hands-on Senior System Engineer to lead and support 24x7 mission-critical systems in secure on-premises environments. The role requires strong technical expertise and operational leadership, with hands-on involvement in deployments, critical incidents, and emergency recovery activities.

Mandatory Skill-set

  • Must have 5 years of experience in Systems Administration, Infrastructure Support, or Mission-Critical environments;
  • Hands-on experience with Windows Server, Active Directory, GPO, and Microsoft SQL Server;
  • Experience with VMware, Layer 2/3 networking, and Splunk monitoring;
  • Knowledge of backup/recovery, disaster recovery, patching, and cybersecurity solutions;
  • Experience supporting 24x7 on-premises systems;
  • Strong troubleshooting, problem-solving, and analytical skills;
  • Willing to provide on-site support for critical incidents and emergency recovery, including after-hours, weekends, and public holidays. 

Desired Skill-set

  • Experience in air-gapped, secure, or regulated environments is preferred.

Responsibilities

  • Administer and maintain Windows servers, workstations, and Active Directory environments;
  • Manage antivirus definitions, security patches, OS, software, and firmware upgrades;
  • Perform SSL certificate renewal and management across all system components;
  • Maintain and manage VMware virtualization infrastructure including ESXi, vCenter, vSAN, and NSX;
  • Monitor and manage system logs using Splunk and Syslog tools;
  • Troubleshoot system issues and coordinate with OEM vendors for root cause analysis and resolution;
  • Perform monthly preventive maintenance, system health checks, and reporting;
  • Support system deployment and change activities during off-peak hours;
  • Manage L1–L3 incident tickets and service requests;
  • Provide 24/7 Level 2 operational support based on a scheduled rotation.

Should you be interested in this career opportunity, please send in your updated resume to [email protected] at the earliest.

When you apply, you voluntarily consent to the disclosure, collection and use of your personal data for employment/recruitment and related purposes in accordance with the SCIENTE Group Privacy Policy, a copy of which is published at SCIENTE’s website (https://www.sciente.com/privacy-policy).

Confidentiality is assured, and only shortlisted candidates will be notified for interviews.

EA Licence No. 07C5639

Skills

Preventive Maintenance, VMware Infrastructure, System Health Checks, out-of-hours support, Active Directory, Microsoft Windows Server Administration, VMware, IT Infrastructure, Patch Management, System Logs, Administration, Microsoft SQL Server, Operations and Maintenance, Windows OS, Windows Server, Microsoft security patch deployment, Workstations, Windows System Administration, System Administration, Vcenter

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