General Dynamics Information Technology

Senior System Administrator

General Dynamics Information Technology

full-time

Posted on:

Location Type: Remote

Location: Remote • Louisiana • 🇺🇸 United States

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Salary

💰 $103,700 - $140,300 per year

Job Level

Senior

Tech Stack

AzureCloudDNSFirewallsTCP/IP

About the role

  • Administer and maintain Windows Server environments, including patching, performance tuning, and security hardening.
  • Manage and support Microsoft 365 services (Exchange Online, SharePoint Online, Teams, Intune, OneDrive).
  • Oversee Active Directory, Group Policy, DNS, DHCP, and related identity management functions.
  • Deploy and manage virtualized environments using Hyper-V and/or Azure Virtual Machines.
  • Assist with cloud resource configuration and governance within Microsoft Azure.
  • Support end-user systems and mobile device management through Intune or similar tools.
  • Perform routine system monitoring, backup validation, and disaster recovery testing.
  • Collaborate with cross-functional IT teams on security, networking, and application initiatives.
  • Document configurations, procedures, and troubleshooting steps.
  • Provide Tier 3 escalation support for complex technical issues.

Requirements

  • 3–5 years of experience in systems administration or IT infrastructure roles.
  • Strong knowledge of Windows Server (2016/2019/2022) and Active Directory.
  • Experience administering Microsoft 365 and Azure environments.
  • Familiarity with PowerShell scripting for automation and management tasks.
  • Understanding of networking fundamentals (TCP/IP, VPN, DNS, firewalls).
  • Demonstrated ability to manage patching, monitoring, and security compliance.
  • Excellent troubleshooting and communication skills.
  • Microsoft certifications such as MCSA, MS-102, AZ-104, or equivalent experience preferred.
  • Experience with hybrid identity (Azure AD Connect, Entra ID).
  • Familiarity with backup and recovery tools (Veeam, Azure Backup).
  • Exposure to ITIL practices or structured service management.
Benefits
  • Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts
  • dental plan options
  • a vision plan
  • a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match.
  • To encourage work/life balance
  • GDIT offers employees full flex work weeks where possible
  • a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.
  • To ensure our employees are able to protect their income
  • other offerings such as short and long-term disability benefits
  • life
  • accidental death and dismemberment
  • personal accident
  • critical illness and business travel and accident insurance are provided or available.
  • We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
Windows ServerActive DirectoryMicrosoft 365AzurePowerShellTCP/IPVPNDNSDHCPdisaster recovery
Soft skills
troubleshootingcommunication
Certifications
MCSAMS-102AZ-104