Infrastructure System Administrator

Resource Management Concepts, Inc.; Crane (IN); On-site; USD 60,000 - 75,000; Full time

Benefits offered by this job

Career growth opportunities

Competitive vacation and holidays

Healthcare plans and 401K

Job summary

Resource Management Concepts, Inc. seeks an entry-level Windows System Administrator to support a DoD-grade IT environment in Crane, IN.

You will manage Windows servers and workstations, administer Active Directory, apply STIGs, and perform basic troubleshooting under the guidance of senior engineers. The role emphasizes security, DoD policy compliance, and hands-on user support in a dynamic government setting.

Qualifications

• Active Directory administration in an enterprise IT environment.
• Active DoD security requirements and STIG compliance.
• CompTIA Security+ certification and DoD 8570/8140 alignment are required.

Responsibilities

• Install, configure, and maintain Windows servers and workstations.
• Administer user accounts, permissions, and access controls per DoD requirements.
• Perform patch management, vulnerability remediation, and security hardening.
• Monitor system performance and troubleshoot network, OS, and security issues.
• Implement and manage security tools like firewalls, AV, and IDS/IPS.
• Ensure configurations stay compliant with DoD cybersecurity policies and CWF.
• Develop, maintain, and update system documentation and SOPs.
• Provide end-user support and training on IT systems and security.
• Collaborate with cross-functional teams on IT initiatives.

Skills

Active Directory

DoD Security Requirements

Education

CompTIA Security+ certification

Job description

This role is an entry-level Windows System Administrator in a Department of Defense (DoD) environment who maintains and secures Windows servers and workstations, manages Active Directory, applies Security Technical Implementation Guides (STIGs), and performs basic troubleshooting. This role supports day-to-day operations, system maintenance, and user administration within a secure military or contractor IT infrastructure. You will work under the guidance of senior engineers to ensure operational readiness, system availability, and strict adherence to federal compliance standards.

This role is responsible for administering, maintaining, and securing enterprise IT systems that support mission-critical Department of Defense (DoD) operations. The ideal candidate brings a proactive approach to system reliability, cybersecurity compliance, and end-user support in a dynamic operational environment.

Key Responsibilities

• Install, configure, and maintain hardware and software systems, including workstations, file servers, and web servers
• Administer user accounts, permissions, and access controls in accordance with DoD security requirements
• Perform system upgrades, patch management, and vulnerability remediation
• Monitor system performance and troubleshoot issues related to network connectivity, system functionality, and cybersecurity incidents
• Implement and manage security tools such as firewalls, antivirus solutions, and intrusion detection systems
• Ensure system configurations remain compliant with DoD cybersecurity policies and Cyber Workforce (CWF) requirements
• Develop, maintain, and update system documentation, standard operating procedures, and user guides
• Provide responsive, customer-focused technical support and training to end users
• Collaborate with cross-functional teams to support operational and project-based IT initiatives

This role is an entry-level Windows System Administrator in a Department of Defense (DoD) environment who maintains and secures Windows servers and workstations, manages Active Directory, applies Security Technical Implementation Guides (STIGs), and performs basic troubleshooting. This role supports day-to-day operations, system maintenance, and user administration within a secure military or contractor IT infrastructure. You will work under the guidance of senior engineers to ensure operational readiness, system availability, and strict adherence to federal compliance standards.

This role is responsible for administering, maintaining, and securing enterprise IT systems that support mission-critical Department of Defense (DoD) operations. The ideal candidate brings a proactive approach to system reliability, cybersecurity compliance, and end-user support in a dynamic operational environment.

Key Responsibilities

• Install, configure, and maintain hardware and software systems, including workstations, file servers, and web servers
• Administer user accounts, permissions, and access controls in accordance with DoD security requirements
• Perform system upgrades, patch management, and vulnerability remediation
• Monitor system performance and troubleshoot issues related to network connectivity, system functionality, and cybersecurity incidents
• Implement and manage security tools such as firewalls, antivirus solutions, and intrusion detection systems
• Ensure system configurations remain compliant with DoD cybersecurity policies and Cyber Workforce (CWF) requirements
• Develop, maintain, and update system documentation, standard operating procedures, and user guides
• Provide responsive, customer-focused technical support and training to end users
• Collaborate with cross-functional teams to support operational and project-based IT initiatives

Requirements

• Must possess and maintain an active DoD Secret security clearance
• Minimum of 1-3 years of experience supporting and administering Microsoft Active Directory within an enterprise IT environment
• Must possess a current CompTIA Security+ certification in accordance with DoD 8570/8140 requirements

Benefits

• At RMC, we're committed to your career growth! RMC differentiates itself from other firms through its investment in our employees. We invest our resources to train, certify, educate, and build our employees.
• RMC can offer you a great place to work with a small company feel and give you the experience, tuition assistance, and certifications that will take your career to the next level. This also includes a competitive paid vacation package with 11 paid federal holidays. Additionally, we also offer high-quality, low-deductible healthcare plans, pet insurance, and a competitive 401K package.
• Salary at RMC is determined by various factors, including but not limited to location, a candidate's specific combination of education, knowledge, skills, competencies, and experience, as well as contract-specific requirements. The current salary range for this position will be $60,000 to $75,000 (annually).