TS/SCI Poly System Admin

Insight Global is looking for a System Administrator to be located in the Colorado Springs area. This role involves comprehensive system administration, configuration management, and release engineering across multi-forest enterprise environments. Responsibilities include maintaining Linux and Windows Server infrastructures, supporting software deployments and database maintenance (Oracle and SQL), and troubleshooting system performance and network connectivity. The position also requires deploying Mission Unique Software in virtualized and containerized environments (VMware, Kubernetes, Docker), managing Active Directory and cross-forest authentication, and administering internal PKI Certificate Authority infrastructure in compliance with DoD and corporate standards. Additional duties include developing SOPs, performing system patching and antivirus updates, conducting Continuous Monitoring (ConMon), and collaborating with cross-functional teams to meet mission and cybersecurity objectives. The role also supports operations and sustainment across interconnected domains, and ensures compliance with IT asset management guidelines.

• TS/SCI Clearance with CI Poly adjudicated within 7 years
• Bachelor’s in STEM with 4+ years of experience as a System Administrator (additional years in lieu of degree acceptable)
• Security + or higher
• Strong Windows Server administration, Domain Controllers, Group Policy Objects (GPOs) Management, DNS/DHCP, and multi-site replication
• Understanding of Active Directory design
• Background in virtualization infrastructure, including VMware, vCenter, ESXi
• Red Hat Enterprise Linux (RHEL)
• Bash, Ansible, and/or PowerShell scripting
• Experience in infrastructure hardening and compliance validation aligned with DISA STIG, RMF, and NIST 800-53 frameworks
• Comfortable operating in high-tempo, classified environments and collaborating with multidisciplinary engineering and cybersecurity teams.
• Kubernetes, Docker, containerization
• Advanced experience managing Certificate Authorities (CAs), including subordinate CA setup, certificate lifecycle automation, and PKI integration for authentication, web, and system services Proficiency.