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# Senior System & Network Administrator

- **Company:** E&m Technologies, Inc.
- **Location:** United States
- **Experience:** Expert
- **Salary:** $100,000.0 - $115,000.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Apple IOS, Microsoft Azure, Server Message Block, Cisco Routers, Configuration Management, CompTIA Security+, Databases, Continuous Integration, Relational Databases, Linux, File Systems, VMware ESX Servers, Microsoft Exchange Server, Hypervisor, McAfee VirusScan, Citrix XenApp, Microsoft SQL Server, System Center Configuration Manager, Windows Servers, NetApp Applications, Network File Systems, Network Monitoring, Routing, Network Administration, Cisco Nexus Switches, Citrix Systems, Data ONTAP (Server Appliance), Performance Tuning, Red Hat Enterprise Linux, Ansible, Service Pack, Vault (Revision Control System), Virtual Switching, Virtualization Technology, VMware VSphere, Software Vulnerability Management, Wide Area Networks, Google Cloud, Nx-os, Delivery Pipeline, Juniper, Gitlab, SolarWinds (Software), Nessus, Npm(Software), Firewall Services Module, Terraform, Cisco Switches, Wsus, Cisco, User Administration
- **Published:** November 8, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=274294992abc5064

## About the Role

* Bachelor's degree with 7+ years of hands-on Systems and Network Administration experience, or
 * Master's degree with 5+ years of experience, or
 * Equivalent industry certifications/experience in lieu of degree.
 * Meet DoD 8570.01-M IAT Level III requirements (e.g., CompTIA Security+) within 30 days of hire.
 * Systems Administration Experience with Microsoft Windows Server/Desktop OS administration; Active Directory and Group Policy management, Virtualization and hypervisors (e.g., VMware vSphere/ESXi); Citrix (Provisioning, XenApp, StoreFront), Enterprise services: Microsoft Exchange; System Center (SCCM/MECM); WSUS; WDS, Databases (SQL Server or other RDBMS), Endpoint and vulnerability management (McAfee ePO; ACAS/Nessus), Linux/Unix (e.g., Red Hat Enterprise Linux).
 * Network Administration Experience with: Cisco Catalyst switches (9300) and Nexus platforms (9300 Series, 9500 Series); Cisco routers (8300), Cisco UCS-X; virtual switching technologies (e.g., VDS), ACLs (IOS/NX-OS) and firewall technologies (Palo Alto, Juniper, SideWinder), NetApp appliances (FAS2750/8200/8300, AFF C80) and Data ONTAP or similar mass storage systems; CIFS/NFS, Network monitoring and access control (SolarWinds NPM/NCM; Cisco Secure ACS or ISE).
 * Ability to lift up to 50 lbs.
 * Self-motivated and capable of working independently with minimal supervision.
 * Must be a U.S. Citizen
 * Must have and be capable of maintaining a U.S. Department of Defense (DoD) Top Secret Clearance with SCI eligibility security clearance, * Familiarity with Public Cloud Service providers such Azure, Google Cloud Platform (GCP) and preferably Amazon Web Services (AWS)
 * Familiarity with CI/CD tools such as Gitlab, Vault, Terraform, and Ansible
 * Experience with troubleshooting and resolving issues with cloud resource configurations, and automation pipelines.
 * Strong communication and collaboration skills in high-performance team environments.
 * Experience administering domain-based enterprise IT services (startup/shutdown, patching, scanning, user management, backup/restoration, service/log management, auditing, performance tuning).
 * Experience with remote file systems (CIFS/NFS).
 * Ability to identify and correct errors in technical diagrams and documentation (installation, configuration, O&M, V&V instructions).
 * Systems administration experience with GCCS-J, C2 Core Air, and JADOCS.

## Description

* Execute fielding objectives - including AREs, CSUs, FTs, FTTIs, and NOTAM-driven updates - within required timelines or as directed by the Technical Project Lead (TPL).
 * Deploy and configure new AOC baseline components and validate system readiness; provide transition support and risk mitigation between fielded baselines.
 * Provide ongoing administration, configuration, and sustainment of the installed AOC baseline, minimizing downtime.
 * Manage domain policies; apply security patches; perform system tuning; support application updates and data migrations.
 * Configure, monitor, and troubleshoot LAN/WAN/SAN environments; administer routing, switching, ACLs, and firewall policies.
 * Open, track, and resolve trouble tickets; close technical action items from site evaluations.
 * Participate in TIMs, AOC Production Center engineering/integration sessions, and post-installation reviews.
 * Submit recommended configuration changes to AOC Configuration Management and support Request for Variance (RFV) actions.
 * Collaborate with team leadership to define achievable site-specific objectives; document lessons learned and share metrics.
 * Support Verification & Validation assessments and other SPO-directed events.
 * Provide insights while testing or supporting future upgrades developed by the AOC Production Center