- Ang Mo Kio North-east Region (Singapore) Singapore

Working Location
Job Description
Responsibilities
We are seeking a highly technical Messaging & Collaboration Team Lead to architect, manage, and optimize our enterprise communications infrastructure. You will define technical strategy, manage architecture, and serve as the definitive L4 technical authority for L2 and L3 engineering teams in a massive, high-volume environment (100,000+ users).
Architecture & Platform Management
Architect, support, and optimize Microsoft Exchange (On-Premises, Online, Hybrid), SharePoint (On-Premises, Online), and Microsoft Teams.
Manage Azure AD (Entra ID) synchronizations, conditional access policies, and enterprise Role-Based Access Control (RBAC).
Maintain robust mail transport rules, highly available SMTP routing, and enterprise Data Loss Prevention (DLP) policies.
Lead architectural reviews to ensure security, cost efficiency, and scalability across messaging and collaboration environments.
Automation & Engineering
Write, review, and optimize advanced custom PowerShell modules.
Utilize the Microsoft Graph API for large-scale data processing and administrative automation.
Technical Leadership & Operations
Serve as the L4 escalation point for complex, high-severity incidents, conducting root-cause analysis for issues L2/L3 teams cannot resolve.
Oversee daily operations, including shift rosters, patching schedules, and incident escalation paths.
Develop technical documentation, runbooks, and KB articles to upskill and empower L2/L3 support teams.
Core Stack: Subject Matter Expert (SME) in Microsoft 365, Exchange (SE/Online), SharePoint, SharePoint Online, and Microsoft Teams.
Identity & Security: Deep operational knowledge of Azure AD (Entra ID), Azure AD Connect, and enterprise directory services.
Scripting: Advanced proficiency in PowerShell and Microsoft Graph API.
Scale: Proven experience architecting and migrating systems in massive, complex enterprise environments.
Experience: 10+ years of dedicated experience in enterprise messaging/collaboration engineering.
Leadership: 2+ years in a technical leadership or delivery role, with demonstrated experience structurally supporting and mentoring L2/L3 operations.
SAGL Consulting was established in year 2016 by group of experienced head-hunters in Singapore. The founders realised the need for an executive search firm with sole focus on technology recruitment and works on the recruitment practices suited for it.
The firm was set up to bring top IT recruiters together who have passion to get the best talents for their clients.The recruitment practice in the firm is designed to create a strong network of technology professionals and leaders.We give utmost importance to keep the candidate information confidential and provide consultancy for career progression.
We use the agile methodology of recruitment and have adopted AI powered solutions for getting the best talents in the market. But always keeping the human touch first to give you true experience of boutique recruitment.
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