Senior System Administrator - RMF & DoD-Certified IT Lead

Trideum Corporation; Huntsville (AL); On-site; USD 75,000 - 110,000; Full time

Benefits offered by this job

Competitive compensation

Medical benefits

Paid leave

Financial planning services

Education assistance

401k matching

Job summary

Trideum Corporation, Huntsville, AL, is seeking a Senior System Administrator to support secure, complex environments. This role blends system administration, network awareness, cybersecurity compliance, and user support to keep mission systems operating efficiently.

Responsibilities include managing Windows/Linux systems, Active Directory, and virtualization, with RMF/STIGs and DoD program experience preferred. Strong scripting and collaboration skills are essential.

Qualifications

• Bachelor's Degree in Information Technology or related field; equivalent experience may be considered.
• 3-5 years of relevant experience supporting Windows workstations and servers in a secure IT environment.
• Proficiency with Microsoft technologies including Active Directory, O365, Teams, Microsoft Endpoint Configuration Manager, Azure, and Intune.
• Demonstrated experience in physical, virtual, and cloud-based system administration.
• Understanding of RMF, STIGs, and ACAS security frameworks.
• Strong communication and ability to work independently.

Responsibilities

• Manage, configure, and maintain Windows and Linux-based systems across development, integration, and test environments.
• Deploy and recover workstations for onboarding and offboarding in accordance with configuration control processes.
• Monitor system and server health; identify and remediate issues proactively.
• Manage IT assets in alignment with inventory and accountability requirements.
• Install, configure, and maintain hardware, storage solutions, and software used in modeling, simulation, and test environments.
• Maintain and administer Active Directory, Group Policy, DNS, DHCP, and Domain Services for networks.
• Apply STIGs, security patches, and configuration baselines to ensure RMF compliance.
• Support virtualization technologies including VMware, Hyper-V, and cloud-based instances where applicable.
• Assist engineers with system-level troubleshooting for HWIL labs, simulation tools, and program equipment.
• Support Teams Rooms, video conferencing systems, and collaboration tools used across program stakeholders.
• Create and maintain technical documentation for repeatable processes and baselines.
• Coordinate with external service providers and government partners to troubleshoot and resolve system issues.

Skills

PowerShell scripting

Active Directory

O365 / Microsoft 365

Teams

Azure

Intune

RMF/DoD security

Education

Bachelor's Degree in Information Technology or related field

Tools

VMware

Hyper-V

Job description

Trideum Corporation, Huntsville, AL, is seeking a Senior System Administrator to support secure, complex environments. This role blends system administration, network awareness, cybersecurity compliance, and user support to keep mission systems operating efficiently.

Responsibilities include managing Windows/Linux systems, Active Directory, and virtualization, with RMF/STIGs and DoD program experience preferred. Strong scripting and collaboration skills are essential.