SITEC Consulting is seeking motivated Junior and Mid-level Windows / Linux / VMware System Administrators to support a mission-focused government software hosting facility. This is an excellent opportunity for candidates who enjoy hands-on technical work across physical servers, virtual environments, operating systems, networking, security compliance, and customer support.
In this role, you will help deploy, maintain, secure, and troubleshoot critical infrastructure supporting a variety of customer missions. The ideal candidate is technically curious, comfortable working in a secure government environment, and eager to contribute to system reliability, security posture, and long-term infrastructure improvements.
What You'll DoAs a System Administrator, you will support day-to-day operations, maintenance, and engineering activities across Windows, Linux, VMware, and related infrastructure. Responsibilities may include:
- Deploying and maintaining physical and virtual hardware infrastructure, including virtual machines and containers
- Performing routine maintenance, configuration changes, and troubleshooting across servers, workstations, and IT equipment
- Installing, configuring, and supporting hardware and software in a secure enterprise environment
- Managing system backups, disaster recovery planning, user accounts, and permissions
- Deploying, maintaining, and troubleshooting software applications
- Supporting customers by resolving technical issues and providing guidance on best practices
- Maintaining documentation, including knowledge base articles, incident response actions, system configurations, and administration procedures
- Securing information systems and applications in accordance with current DoD guidance
- Supporting RMF compliance activities, including scanning, STIG execution, remediation tracking, and routine security reporting
- Maintaining system configuration and security posture through continuous monitoring
- Participating in project planning and execution using Agile methodologies
- Providing networking support for on-premises infrastructure, including virtual networking environments
Required Qualifications- Active Secret clearance with the ability to obtain a Top Secret clearance
- Ability to start with an interim Top Secret, if applicable
- U.S. Citizenship required
- 2-5 years of hands-on experience with the following:
- Experience supporting Windows and/or Linux system administration
- Experience with Risk Management Framework (RMF) compliance activities
- Hands-on experience with security scanning, STIG execution, vulnerability remediation, or related security hardening activities
- CompTIA Security+ certification
- Windows or Linux operating system certification
- Familiarity with Linux operating systems and virtual networking concepts
- Strong troubleshooting, documentation, and customer support skills
Desired Skills- VMware / vSphere / ESXi administration
- Virtual networking
- System backups and disaster recovery
- Containers
- Active Directory
- Networking fundamentals and on-premises infrastructure support
- Experience working in secure DoD or government environments
Why This RoleThis position offers the opportunity to work across a broad technical stack while supporting meaningful government missions. Candidates will gain exposure to infrastructure engineering, virtualization, cybersecurity compliance, RMF, STIGs, networking, and operational support in a collaborative environment.
Whether you are a junior administrator looking to grow or a senior-level professional ready to take ownership of complex systems, this role offers room to contribute, learn, and advance.
Clearance RequirementAn
active Secret clearance is required, with the ability to obtain a
Top-Secret clearance.
Apply TodayJoin SITEC Consulting and help support secure, reliable, mission-critical infrastructure for government customers.
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