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Enterprise Network Systems Administrator

Vertisystem Inc.Downey, CA🇺🇸United StatesPosted 14 Sept 2026

Why This Role Stands Out

Advance your career in network administration with Vertisystem Inc., a leading technology company offering a hybrid work model for excellent work-life balance. You'll thrive in this mid-senior role if you possess strong problem-solving skills and a passion for maintaining and securing critical network infrastructure. This is an exciting opportunity to contribute to vital IT operations and grow your expertise within a reputable organization.

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Downey, CA, United States
Posted
Yesterday
Risk ManagementWAF

Job Description


Position Description

The Enterprise Network Systems Administrator (or Network Administrator) (ENSA) works under the direction of a Principal Network Systems Administrator (PNSA) Supervisor who manages and oversees all aspects of work for the Enterprise Network. The ENSA job is to make sure that company networks align with business goals and objectives as well as the ability to problem solve and think critically. The ENSA is responsible for overseeing an organization s computer systems or database networks to ensure proper maintenance and security. The ENSA applies their information technology expertise to their employer s computer systems. The ENSA duties include working with other network professionals and IT staff to update cyber security measures, install hardware or software devices and troubleshoot problems. The ENSA also works with company employees to identify network or computer system needs, overseeing the installation of new hardware or software and using employee feedback to isolate issues. The ENSA is responsible for maintaining computer networks and systems including software, mainframes, VPNs, routers and other physical hardware; installing and configuring network equipment to update or fix hardware or software issues; updating virus protection software to keep data and communications protected; monitoring computer systems to improve network performance for computer systems and networks; communicating networking issues to other employees and management, especially in training new users; and fixing software and hardware configuration issues for users on-demand or from inspection of the systems. The ENSA may also be responsible for creating instruction manuals for employees to navigate company networks.

Skills Required

The ENSA will possess knowledge and experience in customer service; decision making; flexibility; interpersonal skills; leadership; organizational awareness; problem solving, reasoning; team building; oral communication, speaking and writing; business process, project management; quality assurance; requirements analysis and risk management; configuration, data, and information management; information resources strategy and planning; information technology architecture; information technology performance assessment; and technology awareness. The following technology skill sets are required to perform in this classification: Cisco ATA, Cisco ACI, Cisco APIC, Cisco Prime, Cisco VoIP Call Manager, CACTI, eCloud, Elastic Search, ITM, Open NMS, nGenius, McAfee; MVISION, NetScout, SCOM; UTR; StruxureWare, SecureWorks WAF (WAN App FW) toolset, Wireshark, & Web CTRL.

Additional Skills Required

Strong troubleshooting and analytical skills. Strong customer service, interpersonal, and detail-oriented skills. Knowledge and ability to use Microsoft suite including Excel, Word, Outlook, and Visio. Effective reading, written and oral communication fluency in English.

Experience Required

This classification must have a minimum of five (5) years of broad knowledge of networking services and common networking protocols, have computer proficiency and understanding of various types of hardware, and increasingly responsible Information Technology skills to include Cisco competencies; must have a minimum of three (3) years of experience within the last four (4) in the capacity of a Network Systems Administrator or similar role; must have a minimum of two (2) years of experience within the last four (4) years in a security monitoring role.

Additional Experience Required

3 years of experience utilizing complex large-scale network infrastructure devices, including Cisco enterprise or carrier-class routers, switches, ASA firewalls, Palo Alto firewalls, wireless controllers/access points, and Cisco Nexus switches. 2 years of experience utilizing enterprise-level monitoring tools such as OpenNMS, Cisco Prime Infrastructure, Cisco Prime Collaboration, NetScout nGenius, Route Explorer, Elastic Search, SCOM, vROPS, Secure Works, Dynatrace, Uptime Robot, IBM Tivoli, WebCTRL, CACTI, StruxureWare, and Cherwell system. 2 years of experience using Windows servers, Linux servers, and IBM Mainframe z/OS operating systems.

Education Required

This classification requires the possession of a bachelor s degree in an IT-related or Computer Science field. Additional qualifying experience may be substituted for the required education on a year-for-year basis.

Additional Education Required

Certification of CompTIA Network+, CompTIA Security+, Cisco Certified Networking Associate (CCNA), and/or Cisco Certified Network Professional (CCNP)

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