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.

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.

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.

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Senior IT Engineer