IT Systems Administrator

Sullivan Brothers Family of Companies LLC
Houston, TX, United States
3 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
5 years minimum
Working hours
Regular working hours
Job source

Tech stack

Microsoft Windows Active Directory Asana Microsoft Azure Backup Devices Microsoft Online Services VoIP Business Software Software as a Service CompTIA Security+ Cyber Security Computer Engineering
+31 more
Desktop Computing Monitoring of Systems Hyper-V Networking Hardware Virtual Private Networks (VPN) Windows Servers Network Architecture Network Diagrams Windows PowerShell Remote Access Technology Azure Active Directory Security Support Provider Interface Microsoft SharePoint Security Information and Event Management Single Sign-On Software Deployment Systems Integration User Environment Management User Provisioning Software Virtual Machines Software Vulnerability Management Smartsheet Scripting Software Troubleshooting Firewalls (Computer Science) Microsoft InTune Information Technology Fortinet Zendesk Network Server Azure Resource Manager

Job description

  • Administer Microsoft 365 services extensively, including Exchange Online, SharePoint, OneDrive, Teams, licensing, and tenant-level configuration and policies.
  • Manage Microsoft Entra ID (Azure AD) identity and access: user lifecycle, groups, Conditional Access, MFA, role assignments, and hybrid identity with on-premises Active Directory.
  • Manage Microsoft Intune for device enrollment, compliance, configuration, application deployment and patching (Windows and mobile).
  • Deploy and manage Azure resources (virtual machines, networking, storage, backup, monitoring) with attention to cost, availability and security.
  • Automate routine administration and reporting with PowerShell and other scripting tools.

SaaS Platform Administration

  • Administer and support SaaS platforms such as Smartsheet and monday.com, including user provisioning, permissions, integrations, single sign-on, and licensing.
  • Partner with business application owners and vendors on configuration changes, access requests, and issue resolution.
  • Evaluate new SaaS tools for security and integration fit, and assist with roll-out of new applications.

On-Premises, Hyper-V and Network Infrastructure

  • Manage on-premises environments, including Active Directory, Windows Server and Hyper-V, and maintain updates for all server and desktop systems.
  • Administer and troubleshoot firewalls, switching and wireless (Fortinet, Ubiquiti), including VPN and remote access.
  • Assist with managing VOIP and cellular phone systems.
  • Maintain backups, monitor system performance and capacity, and take part in disaster recovery testing.

Help Desk Escalation

  • Serve as Tier 2/3 escalation for the Help Desk and for local IT staff at the affiliated companies; take ownership of complex or unresolved tickets through resolution.
  • Proactively monitor and respond to support tickets and e-mails in the ticketing systems (Zendesk), including after-hours for urgent issues.
  • Perform root-cause analysis on recurring issues, document fixes in the knowledge base, and coach Help Desk staff on resolution steps.
  • Communicate status clearly to end users and stakeholders, in plain language, until issues are closed.

Security Support

  • Share responsibility with the IT Manager and team for monitoring and responding to alerts in Microsoft Defender and Darktrace; triage and investigate incidents, and escalate or contain as needed.
  • Help tune detections and policies, and assist with vulnerability remediation, security baselines and access reviews to support the Company’s cyber security posture with an ITSM approach.
  • Gather evidence and documentation to support audits, assessments and security questionnaires.

Operations and Documentation

  • Follow change management practices for infrastructure and security changes, including communication and rollback planning.
  • Maintain IT asset inventory, coordinate ordering of IT equipment, set up hardware for employee use, and ensure secure disposal of retired equipment.
  • Maintain accurate documentation: network diagrams, runbooks, standard procedures and configuration records.
  • Train users in the proper use of hardware and software.
  • Other duties as assigned.

Expectations:

  • Systems and services are reliable and available, with maintenance done in agreed windows and affected users notified in advance.
  • Servers, network devices, and Microsoft 365 and Intune policies are patched and updated on a regular cadence.
  • Backups are monitored and failures are addressed promptly.
  • Escalated issues are owned through resolution, with status updates to the Help Desk and end users.
  • Changes follow change management, including communication and a rollback plan.
  • Assigned security alerts are reviewed and acted on promptly.
  • User access, onboarding and offboarding are accurate and reviewed regularly.
  • Documentation is kept current as changes are made.
  • Available after-hours for urgent issues.

Requirements

  • Bachelor’s Degree in MIS, Computer Science, Computer Engineering, related field, or equivalent experience.
  • 5+ years of experience in systems administration, including Microsoft 365 and Azure in a multi-user environment.
  • Hands-on experience with Microsoft Entra ID, Intune and Exchange Online; working familiarity with Microsoft Defender XDR and Darktrace (or comparable security monitoring tools).
  • Experience administering SaaS platforms such as Smartsheet and monday.com.
  • Working knowledge of Active Directory, Windows Server, Hyper-V, and Fortinet, and Ubiquiti networking.
  • Experience with PowerShell scripting and automation.
  • Established customer-service skills and the ability to explain technical issues to non-technical users.
  • Strong troubleshooting, documentation and prioritization skills; able to work independently and as part of a small team.

Preferred Certifications

  • Microsoft: MS-102 (Microsoft 365 Administrator), AZ-104 (Azure Administrator), SC-300 (Identity and Access Administrator), or MD-102 (Endpoint Administrator).
  • CompTIA Security+ or Network+, or equivalent.

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