Systems Administrator - IT Infrastructure & Security

Job Description

Job Description

Position Overview

We are seeking a skilled Systems Administrator to join our dynamic IT team in a mission-critical environment. This role combines hands-on technical expertise with strategic infrastructure management, supporting both Windows and Linux enterprise environments while maintaining the highest security standards.

Core Responsibilities

Infrastructure Management

• Hardware & Systems : Install, configure, and maintain desktop/laptop computers, network switches, enterprise servers, and storage devices across multiple sites
• Network Security : Implement and manage comprehensive Network Security Monitoring solutions and robust backup systems
• Software Administration : Deploy, configure, and manage diverse software applications including Windows and Linux operating systems, specialized radar signature generation tools, Computer Aided Design (CAD) packages, and software development/compiler environments

Daily Operations

• Execute preventive and emergency maintenance procedures
• Perform system monitoring and performance optimization
• Manage patch deployment and security updates for Linux and Windows operating systems
• Conduct security compliance assessments and baseline checks per DoD requirements
• Perform security auditing per compliance and control requirements

Required Technical Skills

Windows Environment Expertise

• PowerShell Automation : Develop and maintain PowerShell scripts for routine maintenance tasks across multiple sites
• System Implementation : Windows OS deployment, imaging, and inventory management systems
• Network Services : DNS and DHCP scope management and troubleshooting
• Security & Maintenance : Monthly patching cycles, firmware maintenance, and security baseline compliance
• Directory Services : Active Directory Group Policy Object (GPO) configuration and management
• Monitoring : Implement server monitoring solutions and alerting systems

Linux Systems Proficiency

• Operating Systems : Strong working knowledge of Red Hat/CentOS Linux distributions for system implementation and patching
• Security Compliance : DISA STIG (Security Technical Implementation Guide) evaluation and implementation experience
• Baseline Security : Perform security compliance checks and baseline assessments based on DoD requirements
• Integration : Configure Linux authentication against Windows domain controllers
• Automation : Advanced Bash scripting for system administration and security compliance tasks
• Package Management : Local YUM repository setup and maintenance

Infrastructure & Security

• Networking : High-speed Ethernet, fiber optics, router, and firewall configuration
• Storage Solutions : Enterprise storage administration and optimization
• High Availability : Failover clustering implementation and management
• Network Architecture : Modern LAN/WAN concepts, client/server environments, and network monitoring
• Security Compliance Tools : Working knowledge of security compliance checkers and STIG evaluation tools
• Risk Mitigation : Implement security measures and mitigate risks based on vulnerability assessments
• Security Monitoring : Knowledge of SIEM (Security Information and Event Management) solutions
• Endpoint Protection : Experience with EDR (Endpoint Detection and Response) solutions preferred

Desired Experience & Qualifications

Technical Background

• Proven experience in hardware/software troubleshooting and preventive maintenance
• Hands-on experience with information assurance patch installation and security compliance
• Knowledge of modern computer systems and network management concepts
• Experience with enterprise-level infrastructure in multi-site environments
• Working knowledge of DoD security requirements and DISA STIG implementation
• Experience evaluating and implementing security baselines and compliance frameworks
• Security auditing experience per organizational compliance and control requirements

Professional Skills

• Strong analytical and problem-solving abilities
• Excellent communication and customer service skills required
• Ability to work independently and manage multiple priorities
• Experience working in secure, compliance-driven environments
• Cross-utilization capability: Ability to be cross-utilized across different teams and projects a plus

Education & Certifications

Education Requirements (Variable based on experience):

• Bachelor's degree in Computer Science, Information Technology, or related field
• OR equivalent combination of education and professional experience

Preferred Certifications:

• Microsoft certifications (MCSA, MCSE, or Azure-related)
• Linux certifications (RHCSA, RHCE, CompTIA Linux+)
• Cisco networking certifications (CCNA, CCNP)
• Security certifications (Security+, CISSP) preferred

Security Clearance

• Required : Ability to obtain and maintain a security clearance
• Preferred : Current active security clearance

Experience Requirements

• 2-4 years with Bachelor's degree, 4-7 years with relevant certifications

Compensation & Benefits

• Salary Range : $60,000 - $100,000 annually (commensurate with experience and education)
• Comprehensive benefits package
• Professional development opportunities
• Performance-based advancement opportunities

Why Join Our Team?

• Work with cutting-edge technology in a secure environment
• Opportunity to expand skills across multiple platforms and technologies
• Collaborative team environment with experienced professionals
• Career growth potential in a stable, mission-focused organization
• Continuous learning opportunities through training and certifications
• Excellent compensation package including company-paid health, life, and disability insurance; holiday, vacation and sick leave; performance bonus; and 401K retirement

This position requires U.S. citizenship and the ability to obtain appropriate security clearances. We are an Equal Opportunity Employer committed to diversity and inclusion.