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Network Systems Administrator - El Segundo

USAFull-time$100,000–$100,0002026-08-01 → 2026-10-08

Core

Install, maintain, audit, and support a secure Microsoft Windows network environment and limited web/data application services for DoD, military, and civilian partners.

Role type

Network Systems Administrator (IC)

Builds

Secure network infrastructure, file servers, firewalls, and backup systems for SSC Directorates and AFSPC operational units. (via careerplan.io/jobs/gfbade55-network-systems-administrator-el-segundo-at-mantech)

Domain

Defense / Cybersecurity / Windows Server Administration

Required skills

Microsoft Windows Server administration, network protocol management (IP, TCP, HTTP, HTTPS, FTP, SSL), security monitoring, backup management, hardware maintenance, system configuration, independent work in fast-paced environments

Preferred skills

SCI/SAP experience, LAN/WAN technologies, COMSEC integration, JAFAN/DCID/ICD standards knowledge, PL1-PL4 systems experience, cross-domain solutions

Technologies

Windows Server, Exchange Server, Firewalls, Backup Systems, LAN/WAN, COMSEC, JAFAN, PL1-PL4 systems

Responsibilities

Install, maintain, and audit secure Windows networks; manage internet protocols and services; oversee file servers and security monitoring; perform hardware replacements and firmware updates; manage backup libraries and secure storage; participate in planning meetings for system operational use

Seniority

Entry-level (I), hands-on IC