SME Network

SME Network & Computer Systems Administrator 1 day ago Be among the first 25 applicants Xenith Solutions is seeking a highly skilled SME Network & Computer Systems Administrator to support DHS ICE Homeland Security Investigations (HSI) Title III and Linguists Unit (T3LU) under the CALEA program. This role provides advanced technical leadership and mission?critical support for secure law?enforcement systems operating 24/7 across multiple locations. The SME Administrator will manage and troubleshoot enterprise networks, servers, virtual environments, and security configurations while collaborating on the design and maintenance of the CALEA Continuity of Operations (COOP) site in Scottsdale, AZ. A shared responsibility among government and vendor partners. Responsibilities Install, configure, administer, and maintain CALEA LAN/WAN infrastructure, servers, SANs, and network devices Administer Active Directory (AD), including promoting/demoting domain controllers, troubleshooting DNS and DHCP issues, and managing GPO hierarchy and execution Write and maintain PowerShell/Bash scripts for automation Analyze event logs and Windows system errors Plan, deploy, and maintain COOP and DR capabilities in coordination with the Government and vendor partners, ensuring redundancy and fail?over readiness Patch and update servers and workstations; ensure security baseline compliance with DHS and FISMA standards Apply and troubleshoot security hardening requirements and vulnerability remediation; support the ATO process and collaborate with the ISSO to resolve findings Administer virtualization and storage platforms, including VMware ESXi/vCenter (patching, updates, capacity planning, troubleshooting), Nutanix cluster management, NetApp SAN/NAS configuration Assist with Palo Alto firewall deployment and rule migration (from Cisco ASA 5506) to support network segmentation and high availability Configure and troubleshoot Cisco and Dell switches; support VPN tunnels and IP transition projects (copper to fiber) Support lab environment setup and testing for patch validation and COOP simulation Perform hardware replacement (hard drives, memory modules, power supplies, etc.) Maintain technical documentation, diagrams, and SOPs in CALEA repositories Liaise with Harmonia and ICE technical leads to coordinate troubleshooting and mission support Required Qualifications Bachelors degree in IT, Engineering, or related field OR +5 years equivalent experience 10+ years enterprise IT systems/network administration experience Preferred Certifications: MCSA, MCSE + Security, CompTIA Security+ (active), PMP Proficiency in Active Directory, DNS, DHCP, GPO management, PowerShell or Bash scripting, VMware, Nutanix, NetApp, Windows Server, Linux system management, server/workstation patching, security remediation, ATO processes, Cisco/Dell network devices, Palo Alto firewalls Excellent communication skills with both technical and non?technical stakeholders Ability to work independently in high?pressure, mission?critical environments Preferred Qualifications Experience supporting federal law enforcement IT systems or CALEA?related operations Hands?on experience assisting with the design or deployment of COOP/DR sites Knowledge of Palo Alto firewall configuration and migration Familiarity with Kubernetes or containerized applications (e.g., JSI platforms) Experience with static routing, VPN tunnels, and multi?site network resiliency Familiarity with lab testing and replication validation processes Prior experience supporting high?availability, 24/7 mission operations Soft Skills Analytical and detail?oriented with strong initiative Adaptability to changing mission needs and operational tempo Collaborative approach with vendors (JSI, Palo Alto) and government teams Seniority level Mid?Senior level Employment type Full?time Job function Sales, General Business, and Education Industries Wireless Services, Telecommunications, and Communications Equipment Manufacturing #J-18808-Ljbffr