Exchange Server, Hybrid & Microsoft 365 Customer Engineer

Job Specification: Exchange Server, Hybrid & Microsoft 365 Customer Engineer
Technical Skills – Solution Area: AI Business Solutions

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

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

Key Responsibilities • 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.

• Produce design documents, runbooks, migration plans and

executive summaries.

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 server
where supported).

• Database Availability Groups, transport (Edge/Mailbox),

client access, namespace planning and certificate management.

• Performance tuning, capacity planning and advanced

troubleshooting with logs, message tracking and diagnostic tools.

Exchange Hybrid

• Hybrid Configuration Wizard, Modern Hybrid Agent and

Classic Hybrid deployments.

• Mailbox moves (remote move migrations), migration batches

and 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/resource

mailboxes, permissions, policies, mail flow rules and connectors.

• Email security: Exchange Online Protection, Microsoft

Defender 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 modern

authentication.

• Microsoft 365 tenant administration, service health, usage

reporting and adoption.

• Cross-tenant mailbox migrations and tenant-to-tenant

scenarios.

Relevant MIP / VBD Offerings

• Exchange Server Workshop

• Exchange Server Migration

• Exchange Server Activation

• Exchange Server Management

• Exchange Online Workshop

• Exchange Online Pilot

• Exchange Online Activation

• Exchange Online Optimization

• Microsoft 365 Usage Reporting Workshop

Experience and Qualifications

• 15+ years in customer-facing roles across systems

architecture, administration, operations, IT consulting, and on-premises and cloud support
for enterprise and/or 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.

Optional Skills

• Microsoft Graph API and Exchange Online PowerShell

automation.

• Microsoft Teams and SharePoint Online integration with

Exchange.

• Well-Architected Framework and Cloud Adoption Framework

concepts.

Relevant Certifications

• Microsoft 365 Certified: Messaging Administrator

Associate, Microsoft 365 Certified:

Administrator Expert, or Microsoft 365 Certified: Enterprise
Administrator 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 PlatformationTM 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.