System Administrator

• Administer and support desktop, server, networking, virtualization, Microsoft 365, and cloud infrastructure environments
• Maintain security best practices across client environments
• Provide advanced technical support and resolve escalated administrator-level issues
• Work assigned tickets in SLA order and minimize disruption to customer operations
• Serve as the primary escalation resource for Systems Technicians
• Support advanced service desk, field, server, network, cloud, and line-of-business application issues
• Escalate complex multi-domain or engineering-level issues to Systems Engineers
• Consult with internal and external stakeholders regarding client environments
• Mentor Systems Technicians and provide technical guidance
• Develop processes and knowledge base articles
• Provide advanced end-user, server, networking, virtualization, Microsoft 365, and cloud troubleshooting
• Administer servers, workstations, firewalls, switches, wireless access points, virtualization platforms, and cloud technologies
• Support Exchange Online, SharePoint, Teams, Intune, and Microsoft Entra ID
• Troubleshoot firewall, VLAN, DNS, DHCP, VPN, wireless, and connectivity issues
• Support backup, disaster recovery, documentation, ticketing, remote management, and monitoring platforms
• Adhere to and create Standard Operating Procedures
• Assist with onboarding, training, and development of technical team members
• Promote approved AI tools and share AI-driven productivity techniques with Systems Technicians
• Elevate team capability through knowledge sharing and standardization of best practices

Systems Administrator

• Serve as the high-level escalation point for complex incidents, service requests, and problem management
• Troubleshoot and resolve advanced issues across servers, networks, cloud platforms, and/or security systems
• Perform deep-dive root cause analysis and implement long-term corrective actions
• Collaborate with vendors and third-party providers on escalated issues
• Support the managed services advanced practice
• Perform proactive maintenance, including switch, firewall, router, server, workstation, and firewall-rule updates
• Acknowledge and respond to tickets according to Managed Services SLA
• Mentor Tier 1 and Tier 2 technicians
• Participate in internal technical reviews and continuous improvement initiatives
• Communicate with clients about complex issues, project/service updates, and recommendations
• Provide guidance on technology strategy, lifecycle planning, and risk mitigation
• Lead server, network, and application upgrades, migrations, and major changes
• Assist with incident response, vulnerability remediation, and security audits
• Ensure client environments align with applicable compliance and regulatory requirements
• Research new products, enhance configuration standards and best practices, and educate team members
• Provide senior-level support, maintenance, and administration for customer networks
• Review environments for concerns or enhancement opportunities
• Foster a positive, professional, and respectful team atmosphere
• Work closely with service delivery, project teams, and account management
• Stay current on new products and solutions through vendor and industry resources

Senior Systems Administrator

• Support the US Space Force, Space Systems Command, in operational maintenance and sustainment of ground-based radars
• Perform troubleshooting and repair of hardware systems requiring integration of diverse and complex components
• Install, configure, maintain, and troubleshoot Windows/Linux servers, workstations, and networked systems
• Create, repair, and manage user accounts, permissions, groups, Active Directory, and access controls
• Implement security controls, patch systems, manage protection, and monitor vulnerabilities
• Troubleshoot connectivity, DNS, DHCP, VPN, routing, switches, and other network services
• Perform functional analysis, timeline analysis, and requirements allocation of hardware and software specifications
• Diagnose and resolve hardware/software issues
• Verify recovery procedures
• Document incidents through submission of deliverables
• Support the SAIC Program Manager and Chief Engineer

• Lead, manage, and support the customer’s cyber tool stack and implement defensive rules
• Collaborate with government agencies to record and prepare incident reports, analysis methodology, and results
• Provide insight to Detection and Response teams on signature functionality
• Tune signatures as needed
• Monitor and analyze IDS/IPS signature alerts for false positives
• Create Splunk dashboards
• Provide guidance and work leadership to less-experienced staff
• Use Splunk, Snort signatures, Regular Expressions, Suricata, Palo Alto Firewalls, and Fidelis
• Apply advanced data analytics tools and techniques

System Administrator jobs in Colorado

Systems Administrator

Senior Systems Administrator

Senior Systems Administrator

Cyber Intrusion Detection System Administrator – TS/SCI with Polygraph