Microsoft Infrastructure Engineer

Optimiza is a regional systems integration and digital transformation provider delivering consulting, business, and technology solutions across multiple industries. Working across the IT services landscape, the company helps clients modernize core systems, improve operational resilience, and move critical infrastructure forward through practical, outcome-focused delivery.

This role is focused on supporting and advancing Microsoft infrastructure environments, with particular emphasis on identity, messaging, and migration work. As a Microsoft Infrastructure Engineer, you will play a key role in delivering reliable infrastructure solutions, supporting complex transitions, and helping ensure Microsoft platforms are configured to meet client and business needs.

Responsibilities

• Configure and support Active Directory services, sites, replication, and migrations.
• Prepare Microsoft 365 tenants and verify domains for Exchange Online deployments.
• Configure and troubleshoot Exchange Online mail flow, application email relay, and connectivity.
• Manage Exchange Server coexistence, mailbox migrations, and hybrid integrations.
• Diagnose infrastructure incidents and deliver Microsoft infrastructure implementation and migration projects.

Requirements

Required Qualifications

• Experience with Active Directory administration, including Sites and Services, site configuration, replication troubleshooting, cross-forest migrations, bulk user operations, AD DS promotion and demotion, authentication, and domain troubleshooting.
• Experience preparing and configuring Microsoft 365 tenants, including domain registration, addition, verification, and Exchange Online prerequisites.
• Hands-on experience configuring and troubleshooting Exchange Online client access, mail flow, application email relay, delivery, and connectivity.
• Experience with on-premises Exchange Server coexistence, mailbox migrations, client access, mail flow, and hybrid integration with Exchange Online.
• Experience implementing and supporting Microsoft infrastructure and migration projects.

Preferred Qualifications

• AZ-800/AZ-801 certification.
• MS-102 certification.
• Exchange Server administration training or a relevant certification.