Systems Security Administrator

Confidential Company; Dallas (TX); On-site; USD 80,000 - 100,000; Full time

Job summary

A reputable technology firm in Texas seeks a Systems and Security Administrator to manage and secure its IT infrastructure with a focus on Microsoft technologies. You will be responsible for maintaining Azure resources, administering Entra ID, and supporting Microsoft Defender and Sentinel. The ideal candidate should possess strong expertise in Azure administration, PowerShell scripting, and have 3–5 years of relevant experience. This full-time role offers opportunities to enhance security measures and improve IT systems.

Qualifications

• 3–5 years of experience in system administration and security operations.
• Strong knowledge of Azure administration and Microsoft services.
• Proficiency in PowerShell scripting and managing hybrid environments.

Responsibilities

• Manage and maintain Azure resources including computers and networking.
• Administer Microsoft Entra ID and manage user accounts.
• Deploy and manage Microsoft Defender for Endpoint and Office 365.

Skills

Azure administration

Microsoft Defender

PowerShell scripting

Security compliance

Troubleshooting

Education

Bachelor’s degree in Information Technology or related field

Tools

Microsoft Sentinel

Azure Active Directory

M365

Job description

The Systems and Security Administrator will manage, secure, and optimize the company’s IT infrastructure, with a strong focus on Microsoft technologies and cloud security. This role is responsible for maintaining Azure resources, administering Entra ID, and ensuring the reliability and security of enterprise systems and applications. The ideal candidate will have hands‑on experience with Azure, Microsoft Defender, Sentinel, M365, and Active Directory in both on‑premises and cloud environments.

Azure and Cloud Administration

• Manage and maintain Azure resources including computers, networking, and storage.
• Configure, support, and troubleshoot Azure Enterprise Applications and Azure App Registrations.
• Monitor performance, optimize Azure costs, and implement best practices for scalability and security.
• Implement and maintain Azure policies, resource tagging, and automation using PowerShell or other scripting tools.

Identity and Access Management

• Administer Microsoft Entra ID (Azure AD) including user accounts, roles, and access controls.
• Manage on‑premises Active Directory and synchronization with Azure AD.
• Implement and monitor Conditional Access Policies and Multifactor Authentication (MFA).
• Maintain identity federation, SSO, and secure application integrations.

Security Operations and Compliance

• Deploy and manage Microsoft Defender for Endpoint, Identity, and Office 365.
• Support threat detection, response, and prevention using Microsoft Sentinel (SIEM).
• Conduct threat hunting, log analysis, and root cause investigations for security events.
• Implement and enforce Data Loss Prevention (DLP), Information Protection, and insider risk policies.
• Manage certificates, encryption protocols, and secure communications.
• Participate in security assessments, audits, and Zero Trust initiatives.

Systems Administration and Collaboration Tools

• Support and maintain Microsoft Exchange Online, Teams, SharePoint, and OneDrive.
• Ensure uptime, data protection, and disaster recovery for collaboration platforms.
• Troubleshoot and resolve system, identity, and application issues.
• Apply updates, patches, and configurations following best practices.
• Maintain comprehensive system and security documentation.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, or equivalent experience.
• 3–5 years of experience in system administration and security operations with emphasis on Microsoft environments.
• Strong knowledge of Azure administration, Entra ID, Active Directory, M365, and Microsoft Defender.
• Experience with Azure Enterprise Applications, App Registrations, and Sentinel for monitoring and incident response.
• Familiarity with certificates, encryption, and security compliance frameworks.
• Proficiency in PowerShell scripting for automation and configuration management.
• Experience managing hybrid environments (on‑premises and cloud).
• Strong understanding of IT security principles, Zero Trust, and compliance standards. Excellent troubleshooting, analytical, and problem‑solving skills.

Preferred Certifications

• Microsoft Certified: Security Operations Analyst Associate
• Microsoft 365 Certified: Security Administrator Associate
• CompTIA Security+ or CISSP (a plus)

Seniority level

Associate

Employment type

Full-time

Job function

Information Technology

Industries

Industrial Machinery Manufacturing