> Markdown version of [/jobs/ext/506798-senior-network-administrator](https://www.wearedevelopers.com/jobs/ext/506798-senior-network-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Administrator - **Company:** ATA Engineering - **Location:** San Diego, CA, United States - **Experience:** Expert - **Salary:** $90,000.0 - $175,000.0 - **Contract:** Permanent contract - **Skills:** VoIP, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), VMware ESX Servers, Firmware, Issue Tracking Systems, Virtual Private Networks (VPN), Internet Service Provider, Windows Servers, Networking Basics, Network Monitoring, Routing, Network Administration, Red Hat Enterprise Linux, Server Administration, TCP/IP, VMware VSphere, Wide Area Networks, Network Routers, Firewalls (Computer Science), Os Ticket, Information Technology, Fortinet, Firewall Services Module - **Published:** June 7, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=b433313237c7bc2a ## About the Role Do you have experience in Windows Server administration?, Do you have a Bachelor's degree?, * Must be a U.S. Person as defined by 22 C.F.R. ยง 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, 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. ## Description * 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 ## Related Videos - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Getting under the skin: The Social Engineering techniques](https://www.wearedevelopers.com/videos/38-getting-under-the-skin-the-social-engineering-techniques) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [How Much Does a Software Engineer Make? Realistic Software Engineering Salaries](https://www.wearedevelopers.com/magazine/425-how-much-does-a-software-engineer-make-realistic-software-engineering-salaries) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023)