NextChapter
← Search all jobs

Senior Network Engineer

iStaff

Listing collected from iStaff's career site. NextChapter is independent of iStaff.

Van Alstyne, TX · Posted October 22, 2026

Just laid off? Start here: a plan for the first weeks

See every open role at iStaff

More in Texas job market · All Senior Network Engineer jobs (115) · Engineering jobs

More roles at iStaff

Similar jobs

Engineering jobs in the rankings

Rankings about engineering jobs

Engineering jobs · Top Engineering employers · All rankings

How AI is used in this kind of work

Among network and computer systems administrators, AI is already used for a large share of the tasks. Measured exposure for network and computer systems administrators: 34% (high).

Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.

Check how this applies to your own job

Skills this job asks for

Say which you have and which you want to build. We use it to match you to jobs like this one.

About the job

Position Title: Senior Network Engineer

Overview:

Seeking a hands-on Senior Network Engineer to build, manage, and maintain network and security infrastructure across client environments and colocation datacenters. This role serves as the primary technical lead for network design, centralized management, lifecycle policies, and third-party SOC integration.

Key Responsibilities

Network & Security Operations: Manage firewalls (HA pairs, SD-WAN, IPS/IDS), switches, wireless access points, VPNs, network segmentation, ZTNA, and endpoint management tools.

Datacenter Management: Maintain high-end network platforms under formal change management; plan and execute maintenance windows with rollback procedures.

SOC Liaison: Act as the primary technical contact for a specialized SOC, managing log forwarding, onboarding, alert tuning, and security incident decision-making.

Client Onboarding & Infrastructure Builds: Assess and replace legacy/disparate vendor hardware during new client cutovers; establish standardized build profiles.

Operations & Documentation: Oversee ISP circuit monitoring, carrier escalations, uptime reporting, and infrastructure documentation (runbooks, diagrams).

Technical Environment

Core Network & Security: Fortinet Ecosystem (FortiGate, FortiManager, FortiAnalyzer, FortiSwitch, FortiAP, SD-WAN, FortiSASE, FortiEMS, ZTNA).

Supporting Systems: Auvik, RMM systems, IT Glue, Salesforce.

General Hardware: Multi-vendor networking equipment (assessment, support, and migration to standard platforms).

Requirements & Qualifications

Experience & Skills

Proven hands-on experience designing, building, and managing production firewall deployments across multiple environments.

Solid networking fundamentals with first-principles troubleshooting skills (TCP/IP, BGP/OSPF routing, VLANs, VPNs, DNS, DHCP).

Demonstrated ability to establish network/security standards and lifecycle policies.

Experience with centralized firewall management platforms and enterprise network monitoring tools.

Experience collaborating with an MSSP/SOC and handling escalated security events.

Datacenter experience operating under formal change management protocols.

Preferred: MSP environment experience, cloud networking (Azure), ISP/carrier management, and advanced SD-WAN/ZTNA deployments.

Certifications (Preferred / Supported)

Relevant vendor network/security certifications (e.g., FCP, FCSS, NSE) or equivalent production experience.