Senior IT Engineer

The Senior IT Engineer plays a critical role in ensuring the stability, security, and scalability of the organization's global IT environment. This position sits at the intersection of end-user support and enterprise infrastructure, providing hands-on technical expertise across Microsoft 365, cloud platforms, and core systems while delivering a seamless experience for both onsite and remote employees. Acting as a senior escalation point, this individual is responsible for managing and optimizing Microsoft 365 services, overseeing identity and access management, and maintaining endpoint and infrastructure health across a complex, fast-paced environment. The role combines operational excellence with strategic input-driving automation, improving system performance, and implementing governance and security best practices. In addition to day-to-day support and troubleshooting, the Senior IT Engineer partners cross-functionally on projects, contributes to continuous improvement initiatives, and helps elevate team capability through documentation and knowledge sharing. This is a highly collaborative, hands-on role suited for someone who thrives in a dynamic environment, takes ownership of challenges, and is motivated to enhance both systems and user experience at scale. Responsibilities

• Manage and maintain the overall M365 tenant configuration and health.

• Support hybrid identity and authentication (Azure AD, SSO, MFA).

• Administer mail flow, mailbox management, and email security.

• Configure transport rules, retention policies, and hybrid Exchange setups.

• Manage site collections, permissions, and sharing settings.

• Support OneDrive sync issues and implement DLP policies.

• Configure Teams policies, lifecycle management, and integrations.

• Support Teams voice, calling plans, and meeting configurations.

• Implement and monitor Microsoft Defender for Office 365 and Purview.

• Manage Conditional Access, audit logs, and compliance features.

• Deploy and manage devices using Microsoft Intune.

• Configure compliance policies, app protection, and Autopilot.

• Provide insights and recommendations to improve M365 usage.

• Develop PowerShell scripts for automation and reporting.

• Utilize Power Automate and Graph API for workflow automation.

• Act as Tier 3 support for M365-related issues.

• Extensive knowledge of Windows OS's & MAC OS's

• Administer and support global active directory domain including but not limited to DHCP, DNS, Group Policy, Sites & Services.

• Undertake additional duties and special projects as assigned.

• 5+ years of experience managing Microsoft 365 environments.

• Strong expertise in Exchange Online, SharePoint Online, Microsoft Teams, and Intune.

• Deep understanding of Active Directory (AD) and Azure Active Directory (Azure AD), including:

• Group Policy Objects (GPOs), OU structure, and domain trust relationships.

• User and group management, permissions, and access control.

• AD replication, DNS, and troubleshooting domain-related issues.

• Experience with hybrid identity environments, including Azure AD Connect and synchronization troubleshooting.

• Proficiency in PowerShell scripting for automation, reporting, and bulk operations.

• Solid grasp of Conditional Access, MFA, and identity protection strategies.

• Familiarity with compliance tools such as eDiscovery, DLP, and audit logging.

• Excellent troubleshooting, documentation, and communication skills.

• End point management systems (Jamf, Intune, Endpoint Central).

• Troubleshooting remote and onsite user issues across multiple different endpoint types and OSs.

• In-depth understanding of Microsoft Active Directory.

• VMware/vSphere experience (installation, configuration, maintenance and troubleshooting).

• Experience with Linux & Windows Servers.

• Domain trusts, AD replication, AD Connect, GPO, OU structure management.

• Storage skills, Fibre channel, ISCSI, SAN and NAS.

• Experience with cloud technologies, especially Azure, AWS, EC2, WorkSpaces .

• Technical proficiency and knowledge of IT infrastructure, networks, and systems to effectively manage and troubleshoot issues.

Pursuant to Chicago's Pay Transparency Laws, the base pay range for this position is $105,000-$115,000 per year; base pay offered may vary depending on job-related knowledge, skills, and experience.

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