Sr. Network Engineer

Locations

• Huntsville, AL 35808 – 8000 Rideout Rd, Huntsville, AL 35808, USA
• Remote – Illinois: 28100 Torch Pkwy, Suite 400, Warrenville, IL 60555, USA

At ENTRUST, our Network Engineering Group delivers end-to-end network solutions—from architecture and deployment to managed services and advanced support. With hundreds of years of combined experience, our team members have operated networks ranging from a few thousand subscribers to multiple millions. We specialize in broadband, SCADA, AMI, and other carrier-class communications systems, offering deep operational insight, preventative maintenance, NOC & managed services, and Tier 2/3 escalation support.

Whether you're scaling up, updating, or simply optimizing, we bring proven expertise to keep your network performing at its best. Let’s talk about how we can help future‑proof your network!

In this role, you’ll take ownership of deploying, configuring, and managing client networks. You’ll be the person clients rely on to keep their environments running smoothly day‑to‑day, and the one they turn to when something complex needs attention.

You’ll lead troubleshooting efforts, handle Tier 2 and Tier 3 escalations, and guide root‑cause analysis when issues arise. You’ll also help shape how networks evolve by supporting upgrades, capacity planning, and lifecycle management.

Documentation will be part of your rhythm—keeping network topologies, configurations, and procedures clear and up to date. You’ll also work closely with client teams, offering mentorship and helping elevate their technical capabilities.

Beyond that, you’ll support procurement, vendor coordination, and continuous improvement efforts. You’ll also oversee FTTX installation and upgrade projects and help maintain CGNAT platforms to ensure high‑speed, reliable performance.

• 7+ years of network support experience in a Service Provider/Carrier environment with a focus on designing, deploying, & operating large‑scale networks at OSI model Layers 1 through 3
• Experience configuring and troubleshooting routing and switching protocols (BGP, IS‑IS, MPLS, RSVP‑TE, VRRP, EVPN) and firewalls
• In‑depth knowledge of network protocols (TCP/UDP, DHCP, DNS) and experience with IPv4 and IPv6
• Experience working in a multi‑vendor environment with hands‑on experience with networking hardware
• In‑depth knowledge of physical infrastructure design including structured cabling and fiber‑optic cabling
• Proven experience managing multiple projects simultaneously and delivering against mission‑critical deadlines
• Proven experience working in a team environment and solving problems with limited supervision
• Strong communications, problem‑solving, and documentation abilities
• Expert analytical skills to diagnose complex routing and connectivity issues
• Must have a firm grasp of network security principles and practices
• CCNA, JNCIA, CCNP, JNCIP, or equivalent preferred

• Working knowledge of 40/100/400G Ethernet, CWDM, DWDM, and optical transport network technologies
• Experience with field‑based work in Data Centers, Colocation Facilities, Internet Exchanges, or Central Offices
• Experience configuring & supporting FTTX GPON/XGS‑PON access gear from Adtran, Calix, and/or Nokia
• Advanced experience configuring & supporting backbone routing gear from Arista, Cisco, Juniper, and/or Nokia
• Familiarity with Linux‑based systems and experience with scripting and automation (Bash, Python, Perl)
• Technical leadership capabilities and people management experience
• Working knowledge of Network Address translation techniques (NAT
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This role is designated as remote, giving you the flexibility to primarily work from home while staying actively connected to your team and projects. We value collaboration and responsiveness, so we ask our remote team members to be available when in‑office presence is needed—such as for client meetings, team events, or training sessions. Our approach blends freedom with shared accountability, making ENTRUST an exciting and supportive environment for professionals who thrive in remote work settings with clear, respectful expectations.

• A supportive and…