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Infrastructure Engineer
HORIZON MANPOWER SERVICES PTE. LTD.Singapore22 hours ago
Job descriptionAct as an escalation point for Level 1 and 2 support teams Perform system monitoring, patching, backups, capacity planning, and regular audits Maintain comprehensive documentation of systems and procedures Work with external vendors and partners for issue resolution Ensure systems adhere to IT security and compliance standards Directory & Authentication services (Active Directory, ADFS, LDAP, Microsoft Entra ID / Azure AD) Federation and identity protocols (OAuth, SAML, Azure MFA, identity lifecycle management) Infrastructure support across related or emerging technologies based on business needs Minimum 5 years of experience in Microsoft 365 and messaging support roles Strong knowledge of Microsoft 365 administration and hybrid Exchange environments Familiarity with email security, compliance, and identity protection tools Experience working in ITIL-compliant environments; ITIL Foundation certification preferred Ability to work in 24x7 shift rotations or on-call support as per operational requirements Excellent communication, troubleshooting, and incident management skills ITIL Foundation Microsoft Certifications (e.g., MS-102 , MS-203 , SC-300 , or equivalent) Flexible to work on 24x7 shifts or rotational on-call support as required by operational needs.
Key Responsibilities :
- Provide advanced L3 support and troubleshooting for :
Microsoft 365 Suite (Exchange Online, Teams, SharePoint, OneDrive)
Messaging systems (Exchange Hybrid, SMTP routing, email gateways)
Security and compliance features (Defender for M365, DLP, Conditional Access, Compliance Center)
Email security (SPF, DKIM, DMARC, anti-spam / phishing tools)
Optional / Good to Have Experience :
Requirements :
Preferred Certifications :
Working Hours :
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Infrastructure Engineer • Singapore