Senior Network Administrator

San Diego, CA

Full Time

Information Technology

Experienced

ATA Engineering, an employee-owned engineering consulting company, is seeking an experienced Senior Network Administrator to manage and support our WAN infrastructure, Fortinet firewall environment, VPN services, and telephone (VoIP) systems. This hands-on role requires strong technical expertise in network security, connectivity, and telephony along with the ability to respond to support tickets in a timely and professional manner. The ideal candidate has 5+ years of relevant experience and is comfortable working across Windows, Red Hat Enterprise Linux (RHEL), and VMware environments.

LOCATION:

San Diego – 13280 Evening Creek Drive South, San Diego, CA 92128

Essential Duties and Responsibilities:

Design, configure, maintain, and troubleshoot WAN circuits, routers, and related connectivity
Manage Fortinet firewall policies, security rules, and firmware updates
Administer site-to-site and remote-access VPN solutions for secure connectivity
Oversee installation, configuration, maintenance, and troubleshooting of telephone systems (VoIP, SIP trunks, and related endpoints)
Monitor network performance, firewall health, VPN tunnels, and telephony quality; respond to alerts and resolve issues proactively
Create and update network and telephony documentation, diagrams, and standard operating procedures
Respond to and resolve support tickets related to WAN, firewalls, VPN, and telephony in a ticketing system (OS Ticket)
Collaborate with team members on projects such as network upgrades, migrations, security audits, and new site deployments
Perform routine maintenance, patching, and backups for managed systems
Supervise and mentor Network Administrators

Requirements:

Must be a U.S. Person as defined by 22 C.F.R. § 120.62
Bachelor’s or master’s degree in Information Technology, Computer Science, or a related field from an accredited college/university with an excellent academic record
Minimum of 5 years of hands-on experience in WAN, firewall, VPN, and/or telephony administration
Strong proficiency with Fortinet firewalls (FortiGate), including policy management, VPN setup, and troubleshooting
Experience with WAN technologies and negotiating contracts with ISPs
Solid knowledge of VoIP/telephony systems; knowledge of FreePBX is a plus
Familiarity with Windows server administration, RHEL Linux, and VMware vSphere/ESXi environments
Willingness and ability to efficiently answer and resolve end-user and infrastructure support tickets
Understanding of networking fundamentals (TCP/IP, routing, switching, DNS, DHCP)
Excellent written and verbal communication skills

Preferred Skills:

Certifications such as Fortinet NSE 4/5/6/7, CCNA/CCNP, or an equivalent
Certifications such as CISSP/CASP/CISM
Experience with Fortinet ecosystem tools (FortiClient EMS, FortiAuthenticator, FortiAnalyzer)
Knowledge of network monitoring tools
Experience with compliance to CMMC/NIST 800-171

Salary Range:

Experienced Professionals and Managers: $90,000–$175,000 per year

ATA Engineering, Inc., is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran status, or any other characteristic protected by applicable federal, state, or local law.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access our career center as a result of your disability. To request an accommodation, contact an ATA Engineering, Inc., Human Resources Representative at careers@ata-e.com.

Please note: We prefer electronic copies of all documents, but you may also mail them to our San Diego office if necessary. Many of our contracts require access to government, defense, and classified information. We cannot consider your application unless you are a US Person. Once we have reviewed your qualifications, you will be contacted regarding the status of your application.

Human Resources ATA Engineering, Inc.

13290 Evening Creek Drive South San Diego, CA 92128

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