Lead Tier-3 Systems Administrator

Ardent Management Consulting, Inc.; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Job summary

Ardent is seeking a Tier 3 System Administrator Lead to support the United States Holocaust Memorial Museum (USHMM) and the technology foundation behind its mission. This on-site role in Washington, D.C.

demands hands-on leadership for end-to-end server operations, 24x7 escalation readiness, and collaboration with cross-functional teams to maintain uptime and security. The ideal candidate will patch, monitor, and optimize Windows and Linux servers, virtualized and cloud environments, and

Qualifications

• Expertise in Linux and Windows server administration and shell scripting.
• Demonstrated experience maintaining operational integrity across on-premises, virtual, and cloud-based server environments.
• Advanced troubleshooting experience with server hardware, operating systems, virtualization, storage, backup, databases, identity services, and network dependencies.
• Experience with VMware, Microsoft Windows Server, Linux, AWS, Active Directory, DNS, SSL certificates, and enterprise patching and monitoring practices.
• Experience executing backup, restoration, disaster recovery, bare-metal recovery, and hardware failure remediation activities.
• Ability to document technical work, coordinate changes with technical stakeholders, and lead vendor escalation and restoration efforts.
• Ability to support onsite work and participate in 24x7x365 after-hours escalation for critical incidents.

Responsibilities

• Lead administration, monitoring, maintenance, troubleshooting, and recovery for physical, virtual, and cloud-based Windows and Linux servers.
• Perform operating system patching, storage-capacity monitoring, hardware maintenance, critical-service restart and validation, backup verification, SSL certificate renewal, firmware and BIOS updates, and directed vulnerability remediation.
• Administer and troubleshoot VMware ESXi and vCenter environments, AWS EC2 and related cloud services, Microsoft SQL, MySQL, Oracle, certificate services, and Active Directory infrastructure within the assigned operational scope.
• Use advanced Linux and Windows administration skills, including shell scripting, to automate repeatable support activities and accelerate diagnosis and recovery.
• Support AWS operations including Linux EC2 lifecycle management, S3 administration, Route 53 records, VPC routing, Lambda monitoring, CloudWatch monitoring, and approved IAM execution.
• Deploy physical, virtual, and cloud servers; complete domain joins, IP and DNS registration, security baselines, backup policy association, documentation, and asset tagging.
• Operate backup, restore, and recovery services using Museum-supported platforms, including daily job review, restoration requests, annual disaster recovery exercises, bare-metal recovery, and runbook validation.
• Support storage platforms and services, including PowerScale, OneFS, Cohesity, S3, Glacier, Unity, and associated monitoring, access, capacity, firmware, and recovery activities.
• Provide data center hardware support, vendor RMA coordination, equipment and cable labeling, environmental and rack-capacity monitoring, and approved physical changes.
• Serve as technical lead for third-party hosted applications, vendor updates, secure remote access, certificates, domains, OS patching, and application-tier services such as IIS, Apache, or JBoss.
• Create and maintain accurate implementation, configuration, recovery, change, incident, and operational documentation; coordinate significant changes through Museum change-control processes.
• Provide Tier 3 escalation and after-hours support for incidents affecting critical infrastructure, including data center and AWS services.

Skills

Linux

Windows Server

Shell scripting

VMware

AWS

Active Directory

DNS

SSL certificates

Documentation

Vendor coordination

24x7 escalation

Tools

PowerScale

OneFS

Cohesity

Dell Unity

VMware vCenter

AWS S3

Glacier

CloudWatch

SolarWinds

Job description

Ardent is seeking a Tier 3 System Administrator Lead to support the United States Holocaust Memorial Museum (USHMM) and the technology foundation behind its mission. This on-site role in Washington, D.C.

demands hands-on leadership for end-to-end server operations, 24x7 escalation readiness, and collaboration with cross-functional teams to maintain uptime and security. The ideal candidate will patch, monitor, and optimize Windows and Linux servers, virtualized and cloud environments, and