Exchange Server, Hybrid & Microsoft 365 Customer Engineer

Sonata Software (SonataOne); Singapore; À distance; SGD 120 000 - 180 000; Plein temps

Résumé du poste

Sonata Software is seeking a highly experienced Exchange Server, Hybrid and Microsoft 365 Customer Engineer for Singapore. The role focuses on designing, deploying, migrating, optimizing and troubleshooting complex messaging environments for enterprise and government customers, including on-premises Exchange, Hybrid configurations and Exchange Online.

The candidate will act as a trusted technical advisor, oversee migrations across multiple Exchange versions, and deliver health checks, risk

Qualifications

• 15+ years in customer-facing roles across systems architecture, administration, operations, IT consulting, and on-premises and cloud support for enterprise and government customers.
• Proven track record delivering large Exchange migrations and hybrid deployments end to end.
• BA/BS (or higher) in Information Technology or a related field, or equivalent experience.
• Strong communication, presentation and interpersonal skills.

Responsabilités

• Lead architecture, design, deployment and optimization of on-premises, hybrid and Exchange Online environments.
• Plan and execute upgrades and migrations across Exchange versions (2010, 2013, 2016, 2019 and Exchange Server Subscription Edition) and to Exchange Online.
• Configure and operate Exchange Hybrid, including the Hybrid Configuration Wizard, Modern/Classic Hybrid, free/busy, mail flow and coexistence.
• Design high availability and disaster recovery using DAGs, load balancing, namespaces and certificates.
• Resolve complex, critical-severity issues with root-cause analysis and clear remediation plans.
• Deliver health checks, risk assessments, workshops and knowledge transfer to customer teams.
• Secure messaging environments and advise on compliance, retention and Microsoft 365 governance.
• Automate administration and reporting with PowerShell and Microsoft Graph.

Connaissances

Exchange Server

Exchange Hybrid

Microsoft 365 / Exchange Online

Microsoft Entra Connect

PowerShell

Microsoft Graph API

Formation

BA/BS in Information Technology or related field

Outils

PowerShell

Microsoft Graph API

Description du poste

Exchange Server, Hybrid & Microsoft 365 Customer Engineer Singapore, Singapore, Singapore, Singapore Permanent

Job Description

Job Specification: Exchange Server, Hybrid & Microsoft 365 Customer Engineer

Location – Singapore (Remote)
Mode of hire – Permanent
Experience – 10+ years
Singapore Citizenship mandatory

Role Overview

We are seeking a highly experienced, customer-facingCustomer Engineer with expert-level (L400) skills across all versions of Exchange Server,Exchange Hybrid and Microsoft 365. The candidate will design, deploy, migrate, optimize andtroubleshoot complex messaging environments for enterprise and government customers, fromlegacy Exchange through to Exchange Online, and act as a trusted technical advisor totechnical, non-technical and leadership stakeholders.

Key Responsibilities

• Lead architecture, design, deployment and optimization ofon-premises, hybrid and Exchange Online environments.
• Plan and execute upgrades and migrations across Exchangeversions (2010, 2013, 2016, 2019 and Exchange Server Subscription Edition) and toExchange Online.
• Configure and operate Exchange Hybrid, including theHybrid Configuration Wizard, Modern/Classic Hybrid, free/busy, mail flow and coexistence.
• Design high availability and disaster recovery using DAGs,load balancing, namespaces and certificates.
• Resolve complex, critical-severity issues with root-causeanalysis and clear remediation plans.
• Deliver health checks, risk assessments, workshops andknowledge transfer to customer teams.
• Secure messaging environments and advise on compliance,retention and Microsoft 365 governance.
• Automate administration and reporting with PowerShell andMicrosoft Graph.

Required Technical Skills (L400)

Exchange Server (all versions)

• Deep knowledge of Exchange Server 2010, 2013, 2016,2019 and Subscription Edition architecture, roles and services.
• Installation, cumulative/security updates, upgrades,side-by-side migrations and decommissioning (including removing the last Exchange serverwhere supported).
• Database Availability Groups, transport (Edge/Mailbox),client access, namespace planning and certificate management.
• Performance tuning, capacity planning and advancedtroubleshooting with logs, message tracking and diagnostic tools.

Exchange Hybrid

• Hybrid Configuration Wizard, Modern Hybrid Agent andClassic Hybrid deployments.
• Mailbox moves (remote move migrations), migration batchesand endpoints; cutover, staged and IMAP migrations.
• Hybrid mail flow, connectors, centralized mail transport,OAuth, free/busy and organization relationships.
• Identity synchronization with Microsoft Entra Connect /Cloud Sync and Active Directory.

Microsoft 365 / Exchange Online

• Exchange Online administration: mailboxes, shared/resourcemailboxes, permissions, policies, mail flow rules and connectors.
• Email security: Exchange Online Protection, MicrosoftDefender for Office 365, SPF, DKIM and DMARC.
• Microsoft Purview: retention, litigation hold, eDiscovery,data loss prevention and auditing.
• Microsoft Entra ID: Conditional Access, MFA and modernauthentication.
• Microsoft 365 tenant administration, service health, usagereporting and adoption.
• Cross-tenant mailbox migrations and tenant-to-tenantscenarios.

Relevant MIP / VBD Offerings

Experience and Qualifications

• 15+ years in customer-facing roles across systemsarchitecture, administration, operations, IT consulting, and on-premises and cloud supportfor enterprise and/or government customers.
• Proven track record delivering large Exchange migrationsand hybrid deployments end to end.
• BA/BS (or higher) in Information Technology or a relatedfield, or equivalent experience.
• Strong communication, presentation and interpersonalskills.

Optional Skills

• Microsoft Graph API and Exchange Online PowerShellautomation.
• Microsoft Teams and SharePoint Online integration withExchange.
• Well-Architected Framework and Cloud Adoption Frameworkconcepts.

Administrator Expert, or Microsoft 365 Certified: EnterpriseAdministrator Expert (MS-102) are a plus.

ABOUT SONATA SOFTWARE

Sonata Software, with over $1.2 Billion Revenue, is a leading AI-first Modernization Engineering company, powered by our unique Platformation TM framework. Our 6400+ AI Engineers are helping enterprises transform from systems to intelligent business platforms leveraging partner ecosystem to drive speed, efficiency and growth. Our bouquet of Modernization Engineering Services with AI -first approach cuts across Cloud, Data, AI, Dynamics, Test Automation, and Managed Services.

Sonata’s AI-led modernization is enabled by a powerful suite of proprietary tools and assets. At the core is the Harmoni.AI Enterprise Platform, which includes Agent Bridge -a governance and observability framework; Agent Builder -a development toolkit for fungible agents integrated into enterprise systems; and the Agent Marketplace -an internal ecosystem for modular, reusable agents.

Headquartered in Bengaluru, India, Sonata Software has a strong global presence, including key regions US, UK, India, Malaysia, Mexico, Australia, DACH (Germany/Switzerland) & Nordics (Finland). We are a trusted partner of Fortune 500 companies in Banking, Financial Services and Insurance; Healthcare and Lifesciences; Telecom, Media, and Technology; and Retail, Manufacturing and Distribution space.

Deep collaborations with partners like Microsoft, AWS, Salesforce, and Snowflake strengthen our ability to deliver cutting-edge AI solutions. Our 30+years of partnership with Microsoft, and being part of the elite Microsoft Inner Circle, places us among the top 1% of global Microsoft partners. Sonata is now among the first companies to earn the Microsoft Frontier Partner Badge Also; Sonata Software is proud to achieve AWS Premier Tier Status in the AWS Partner Network.

Why join Sonata Software?

At Sonata, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build never seen before solutions to some of the world’s toughest problems. You´ll be challenged, but you will not be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.

Sonata Software is an Equal Opportunity Employer encouraging diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity, age, religion, disability, sexual orientation, veteran status, marital status, or any other characteristics protected by law.

Job Snapshot

Updated Date

30-10-2026

Job ID

SSSG-26-27-6

Department

Managed Cloud Services MS

Location