Senior Systems Administrator

About the position

Sev1Tech is seeking a Senior Systems Administrator to design, manage, and configure IT systems within a closed network environment, specifically supporting the US Space Force meshONE-Terrestrial network. The role requires strong technical expertise in Windows systems, problem-solving skills, and the ability to lead efforts to ensure optimal performance and security of IT systems.

Responsibilities

• Oversee the installation, configuration, and maintenance of servers, operating systems, and applications ensuring system reliability, performance, and security across the IT infrastructure.
• Act as the primary SME for PKI, Active Directory, and overall Windows environment of the meshONE-T network.
• Coordinate closely with cybersecurity analysts, network engineers, NOC controllers, and Mission Partners during operations, administration, and maintenance of IT systems.
• Implement and manage backup and disaster recovery solutions to safeguard data integrity and ensure operational continuity, including regular testing of backup procedures and disaster recovery plans.
• Ensure security patches and updates to systems and applications are completed in required timeframes and in coordination with the cybersecurity team.
• Install, configure, and test servers, blade chassis, blade servers, networking appliances, and all associated cabling with new node builds.
• Manage and monitor all installed systems and infrastructure for adherence to DOD guidelines and industry best practices while optimizing system resources.
• Work with the Configuration Management team to provide detailed documentation of system configurations, procedures, and updates.
• Mentor and support junior system administrators and IT staff with on-the-job training and guidance on best practices.
• Provide remote hands support for CO Front Range-area meshONE-T node locations.

Requirements

• 8+ years IT experience
• CompTIA Security+ Certification
• Applicable certifications: MCSA, MCSE, etc.
• 3-5 years experience installing, configuring, and troubleshooting Windows environments, with specific hands-on experience working with Active Directory and PKI
• Knowledge of Microsoft Endpoint Configuration Manager (MECM)
• Knowledge of Windows Server Update Services (WSUS)
• Knowledge of virtualization and containerization basics (e.g., basic understanding of VMware or Hyper-V)
• Knowledge of storage architecture (NAS/SANS)
• Security hardening of Information Systems (Linux/Windows/Endpoints)
• Hands-on experience with scripting languages (Python, Bash, Ansible, Powershell, etc.)
• Basic networking knowledge (OSI layers, TCP/IP, DNS, etc.)
• SECURITY CLEARANCE: Top Secret/SCI Eligible

Nice-to-haves

• Experience with VMWare, vSphere, vCenter, and NSX
• Experience with monitoring systems (Solarwinds/Elastic)
• Experience with ServiceNow platform and products
• Logic and reasoning for troubleshooting
• Problem-solving and multi-tasking abilities
• Understanding and responding to feedback
• Excellent communication skills (written and oral)

Benefits

• Full Time W/Benefits Ret Match