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# Senior Systems Administrator

- **Company:** CLEARTECH
- **Location:** Union City, NJ, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Amazon Web Services, Microsoft Azure, Backup Devices, Data Centers, Dynamic Host Configuration Protocol, Domain Name System (DNS), Multi-Factor Authentication, File Server, Python (Programming Language), Windows Servers, Windows PowerShell, Ansible, Anti-Phishing, Microsoft SharePoint, Virtual Local Area Networks, VMware VSphere, IT General Controls (ITGC), Firewalls (Computer Science), Microsoft Onedrive, Vmware
- **Published:** October 8, 2026
- **Apply:** https://www.disabledperson.com/jobs/75896536-senior-systems-administrator

## About the Role

* 7+ years of hands-on enterprise systems administration experience.
 * Strong Windows Server, Active Directory, Microsoft 365, MFA, and PowerShell skills.
 * Experience with Entra ID, service accounts, application registrations, and credential management.
 * Strong VMware, storage, networking, firewall, and email-security experience.
 * Experience with security tools such as CrowdStrike, Varonis, Proofpoint, or similar.
 * Experience with backups, DR, monitoring, change control, and regulated/audited environments.
 * Strong project, vendor-management, documentation, and communication skills.

Preferred

 * Bachelor's degree or equivalent experience.
 * Financial services or regulated-industry experience.
 * AWS/Azure, Ansible, eDiscovery, Bloomberg, or Avaya experience.

Working Conditions

 * Fully on-site; no remote/hybrid option.
 * Occasional after-hours maintenance and recovery work.
 * NYC employees may travel to CT/Westchester DR facilities.

## Description

* Manage Active Directory, Entra ID, service accounts, MFA, access reviews, and security controls.
 * Administer Microsoft 365, Exchange Online, Teams, SharePoint, OneDrive, email security, and DLP.
 * Manage Windows Server, VMware vSphere, file servers, storage, backups, and migrations.
 * Administer networks, DNS, DHCP, VLANs, wireless, certificates, firewalls, and telecom.
 * Manage endpoint security, vulnerabilities, phishing simulations, and data-governance tools.
 * Support eDiscovery, legal holds, audits, regulatory requests, and IT controls.
 * Automate administration and reporting using PowerShell and Python.
 * Manage software/cloud licensing, vendors, renewals, and procurement.
 * Lead infrastructure and security projects from planning through implementation.
 * Maintain change management, documentation, compliance, and operational procedures.
 * Serve as technical escalation point and mentor junior IT staff.
 * Coordinate server-room power, cooling, UPS, and datacenter infrastructure.