Senior Exchange & Microsoft 365 Engineer — Hybrid/On-Prem

Sonata Software; Singapore; On-site; SGD 180,000 - 300,000; Full time

Job summary

Sonata Software is seeking an experienced Exchange Architect to lead architecture, upgrades, and hybrid deployments across on-premises and cloud environments. You will design high availability, perform migrations to Exchange Online, and implement governance for secure messaging within large enterprise environments.

The role requires deep Exchange Server expertise, 15+ years in relevant roles, and strong communication skills to deliver customer-focused solutions and knowledge transfer.

Qualifications

• 15+ years in customer-facing IT roles across systems architecture, administration, operations, IT consulting, and on-premises/cloud support for enterprise/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.

Responsibilities

• Lead architecture, design, deployment and optimization of on-premises, hybrid and Exchange environments.
• Plan and execute upgrades and migrations across Exchange versions (2010, 2013, 2016, 2019 and Subscription Edition) and to Exchange Online.
• Configure and operate Exchange Hybrid, including Hybrid Configuration Wizard and Modern/Classic Hybrid deployments.
• Design high availability and disaster recovery using DAGs, load balancing, namespaces and certificates.
• Deliver health checks, risk assessments, workshops and knowledge transfer to customer teams.
• Automate administration and reporting with PowerShell and Microsoft Graph.
• Produce design documents, runbooks, migration plans and executive summaries.

Skills

Exchange Server expertise

Hybrid Exchange

PowerShell automation

Microsoft 365

Tenant administration

Security & compliance

Education

BA/BS in IT or related field

Tools

PowerShell

Microsoft Graph

Exchange Admin Center

Azure AD

Job description

Sonata Software is seeking an experienced Exchange Architect to lead architecture, upgrades, and hybrid deployments across on-premises and cloud environments. You will design high availability, perform migrations to Exchange Online, and implement governance for secure messaging within large enterprise environments.

The role requires deep Exchange Server expertise, 15+ years in relevant roles, and strong communication skills to deliver customer-focused solutions and knowledge transfer.