Senior Systems Administrator – Microsoft 365 & IT Security

Ellin-; Baltimore (MD); On-site; USD 85,000 - 100,000; Full time

Benefits offered by this job

Health insurance

Paid time off

Retirement plan with Roth option

Parking

Life and disability insurance

Job summary

Ellin & Tucker is seeking an experienced Systems Administrator to join its in-house IT team in Maryland. The role focuses on maintaining on-premises infrastructure and managing Microsoft 365 while ensuring security and reliability.

The ideal candidate has 5+ years of systems administration experience, strong Windows Server and Active Directory skills, and must be in-office at least four days a week, with a possible future hybrid arrangement.

Qualifications

• Minimum 5 years of experience in systems administration or related IT roles.
• Strong hands-on experience with Microsoft 365 tenant administration.
• Proficiency in Windows Server, Active Directory, and networking fundamentals.
• Knowledge of virtualization technologies (e.g., VMware, Hyper-V) is a plus.
• Familiarity with cybersecurity protocols and compliance standards.
• Excellent problem-solving skills and ability to work independently.
• Strong communication and documentation skills.

Responsibilities

• Install, configure, and maintain servers, networks, and related systems.
• Manage Microsoft 365 Environment (Exchange Online, SharePoint, Teams, Intune).
• Monitor system performance and troubleshoot issues for high availability.
• Implement backup and disaster recovery solutions.
• Apply security best practices and ensure policy compliance.
• Support end-users and resolve technical issues; triage tickets.
• Document system configurations and procedures.
• Collaborate with MSP on projects and ongoing support.

Skills

Systems administration

Microsoft 365 administration

Windows Server

Active Directory

Networking fundamentals

Cybersecurity knowledge

Problem solving

Documentation

Communication

Tools

PowerShell scripting

Azure

Job description

Ellin & Tucker is seeking an experienced Systems Administrator to join its in-house IT team in Maryland. The role focuses on maintaining on-premises infrastructure and managing Microsoft 365 while ensuring security and reliability.

The ideal candidate has 5+ years of systems administration experience, strong Windows Server and Active Directory skills, and must be in-office at least four days a week, with a possible future hybrid arrangement.