Onsite IT Systems Administrator & Service Desk

Amentum; Ellicott City (MD); On-site; USD 85,000 - 110,000; Full time

Job summary

Amentum is seeking an experienced IT Systems Administrator to maintain smooth operation of multi-user computer systems and support Windows and Linux environments on-site in Maryland. You will monitor resources, perform security administration, install and configure software, and document system configurations.

Expect Tier 1–2 user support and collaboration with engineering teams. The role requires 4+ years in enterprise IT, VMware VDI, Active Directory, and ticketing tools such as Jira or

Qualifications

• 4+ years of experience in an enterprise IT environment performing systems administration and/or end-user support.
• Experience imaging and deploying Windows servers and/or workstations.
• Strong troubleshooting experience in Windows environments.
• Experience with Virtual Desktop Infrastructure (VDI), specifically VMware.
• Experience administering enterprise systems using Active Directory and related administrative tools.
• Ability to create clear technical documentation and diagrams.
• Strong communication skills and customer-focused troubleshooting ability.
• Experience with ticketing systems (Jira, ServiceNow, etc.).
• Experience working within classified enterprise networks.
• Team-oriented mindset with the ability to collaborate technically with peers.
• Required IAT Certs: one or more of the following: Security+, SecurityX (CASP+), or CISSP.
• Required Vendor Cert: one or more of the following: Microsoft, VMWare, Cisco, Netapp, Pure Storage, HP, Dell, Linux+, RedHat. If not currently achieved, then must achieve within 6 months of hire

Responsibilities

• Maintain smooth operation of multi-user computer systems in coordination with systems and network engineering teams.
• Monitor and manage system resources (CPU, disk, memory, response times) to ensure optimal performance.
• Perform systems security administration, including account creation, user profile management, workstation/server imaging, and access control across multiple networks.
• Install, configure, and maintain system-wide software; set up administrator accounts; maintain system documentation; and tune system performance.
• Provide Tier 1–2 support to users, distinguishing isolated issues from enterprise-wide problems.
• Support implementation, troubleshooting, and maintenance of IT systems across Windows and Linux environments.
• Work within a JIRA ticketing environment to track incidents, collect data, analyze trends, and implement solutions.
• Diagnose customer issues, initiate repairs or returns, and document recurring problems with recommended preventive actions.
• Collaborate with systems and network engineers on enterprise-wide deployments and technology rollouts.
• Install and troubleshoot workstations, thin clients, applications, printers, scanners, phones, and other IT equipment.
• Provide backup recovery support and make recommendations for hardware/software purchases.
• Create and maintain technical documentation, including logical and physical diagrams.

Skills

Enterprise IT

Windows Server

Linux

VDI VMware

Active Directory

Ticketing systems

Documentation

Team collaboration

Education

Bachelor's Degree

Tools

VMware

Active Directory

Jira

ServiceNow

Windows Server

Linux

Job description

Amentum is seeking an experienced IT Systems Administrator to maintain smooth operation of multi-user computer systems and support Windows and Linux environments on-site in Maryland. You will monitor resources, perform security administration, install and configure software, and document system configurations.

Expect Tier 1–2 user support and collaboration with engineering teams. The role requires 4+ years in enterprise IT, VMware VDI, Active Directory, and ticketing tools such as Jira or