Job description

Job Description: Our client is seeking a skilled Systems Administrator to join their team. Under the general supervision of the IT Operations Manager, the Sr. Systems Administrator serves as a senior technical resource for the design, implementation, administration, maintenance, and troubleshooting of enterprise systems and infrastructure. The position supports Microsoft 365, Microsoft Entra ID, on-premises Active Directory, Windows Server, DNS, DHCP, SSO, MFA, and related technologies. The Sr. Systems Administrator maintains systems through patching and upgrades, develops technical documentation, provides Tier 3 troubleshooting, supports complex infrastructure issues, and helps lead infrastructure upgrades, migrations, integrations, and modernization initiatives. The position prioritizes work to meet managerial, departmental, institutional, and service-level needs and provides systems expertise for critical issues requiring support at any time. Duties and Responsibilities: Administer Microsoft Entra ID and on-premises Active Directory, including user accounts, groups, permissions, organizational units, and access controls. Administer and support Microsoft 365 services, including Exchange Online, Microsoft Teams, OneDrive, Microsoft EntraID, Intune, Conditional Access, MFA, and related services. Administer and troubleshoot hybrid identity services and synchronization between on-premises Active Directory and Microsoft Entra ID. Configure and support Single Sign-On (SSO) integrations for enterprise applications. Administer and maintain Active Directory Domain Services, Group Policy, DNS, DHCP, and related Windows infrastructure. Install, configure, maintain, and troubleshoot Windows Server operating systems. Monitor server, Active Directory, Microsoft 365, and infrastructure health, availability, capacity, and performance. Perform server installations, upgrades, patch management, security remediation, and scheduled maintenance. Develop and maintain PowerShell scripts to automate administrative, monitoring, provisioning, and maintenance tasks. Partner with the Security Team to implement security standards, system hardening, access controls, and industry best practices. Monitor system backups and participate in disaster recovery, business continuity, and restoration testing. Serve as a senior escalation resource for complex infrastructure and Tier 3 technical issues. Troubleshoot complex infrastructure problems, determine root cause, implement corrective actions, and document resolutions. Create and maintain technical documentation, system configurations, procedures, diagrams, and knowledge-base articles. Provide technical leadership for infrastructure upgrades, migrations, integrations, and modernization projects. Take ownership of assigned incidents and service requests from escalation through resolution. Perform additional systems administration projects and duties as assigned Five (5) to seven (7) years of progressively responsible IT experience in systems administration within a medium-to-large enterprise environment. Advanced knowledge of Windows Server, Active Directory Domain Services (AD DS), Group Policy (GPO), DNS, DHCP, and Microsoft Entra ID. Experience administering Microsoft 365, including Exchange Online, Microsoft Teams, OneDrive, Microsoft Entra ID, Intune, Conditional Access, and Multi-Factor Authentication (MFA). Experience supporting hybrid identity environments, including synchronization between on-premises Active Directory and Microsoft Entra ID. Working knowledge of SSO and authentication technologies, including SAML, federation, and modern authentication protocols. Strong experience with PowerShell scripting and automation for system administration, reporting, provisioning, monitoring, and maintenance. Strong understanding of networking concepts and protocols, including TCP/IP, DNS, DHCP, SSL/TLS, and related network services. Knowledge of information security best practices, including identity and access management, least privilege, system hardening, patch management, and protection of confidential and sensitive information. Experience with server monitoring, troubleshooting, performance analysis, and root-cause analysis. Knowledge of backup, recovery, disaster recovery, and business continuity practices. Experience supporting virtualized server environments. Ability to troubleshoot complex infrastructure and system issues and provide Tier 3 technical support. Ability to create and maintain clear technical documentation, procedures, system configurations, diagrams, and knowledge-base articles. Ability to communicate technical information clearly and concisely to technical teams, cross-functional departments, management, and end users. Strong analytical, organizational, problem-solving, and prioritization skills. Excellent written and verbal communication skills. Ability to work independently and collaboratively while managing multiple technical priorities. Flexibility to work after-hours and weekends as required for scheduled maintenance, system upgrades, critical incidents, and availability to provide 24/7 support as needed. Education: Bachelor's degree in MIS, Information Technology, Computer Science, or a related field, or equivalent related experience Years of Experience Required: Five (5) to seven (7) years of industry-standard experience Salary/Rate: $40-$45/HR (depends on experience level). This is a contract position with candidates expected to work 40 hours/ week. Upon conversion the salary: $100,000 - $103,000 (depends on experience level) + benefits.

Requirements

Must-haves

Administer Microsoft Entra ID and on-premises Active Directory, including user accounts, groups, permissions, organizational units, and access controls.
Administer and support Microsoft 365 services, including Exchange Online, Microsoft Teams, OneDrive, Microsoft EntraID, Intune, Conditional Access, MFA, and related services.
Administer and troubleshoot hybrid identity services and synchronization between on-premises Active Directory and Microsoft Entra ID.
Configure and support Single Sign-On (SSO) integrations for enterprise applications.
Administer and maintain Active Directory Domain Services, Group Policy, DNS, DHCP, and related Windows infrastructure.
Install, configure, maintain, and troubleshoot Windows Server operating systems.
Monitor server, Active Directory, Microsoft 365, and infrastructure health, availability, capacity, and performance.
Perform server installations, upgrades, patch management, security remediation, and scheduled maintenance.
Develop and maintain PowerShell scripts to automate administrative, monitoring, provisioning, and maintenance tasks.
Partner with the Security Team to implement security standards, system hardening, access controls, and industry best practices.
Monitor system backups and participate in disaster recovery, business continuity, and restoration testing.
Serve as a senior escalation resource for complex infrastructure and Tier 3 technical issues.
Troubleshoot complex infrastructure problems, determine root cause, implement corrective actions, and document resolutions.
Create and maintain technical documentation, system configurations, procedures, diagrams, and knowledge-base articles.
Provide technical leadership for infrastructure upgrades, migrations, integrations, and modernization projects.
Take ownership of assigned incidents and service requests from escalation through resolution.
Perform additional systems administration projects and duties as assigned
Five (5) to seven (7) years of progressively responsible IT experience in systems administration within a medium-to-large enterprise environment.
Advanced knowledge of Windows Server, Active Directory Domain Services (AD DS), Group Policy (GPO), DNS, DHCP, and Microsoft Entra ID.
Experience administering Microsoft 365, including Exchange Online, Microsoft Teams, OneDrive, Microsoft Entra ID, Intune, Conditional Access, and Multi-Factor Authentication (MFA).
Experience supporting hybrid identity environments, including synchronization between on-premises Active Directory and Microsoft Entra ID.
Working knowledge of SSO and authentication technologies, including SAML, federation, and modern authentication protocols.
Strong experience with PowerShell scripting and automation for system administration, reporting, provisioning, monitoring, and maintenance.
Strong understanding of networking concepts and protocols, including TCP/IP, DNS, DHCP, SSL/TLS, and related network services.

Nice-to-haves

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Platform: careers-page
Effort: medium

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