Senior Enterprise Network Engineer – On-Call & Cisco Expert

ESP Enterprises, Inc.; Columbia (MD); On-site; USD 90,000 - 130,000; Full time

Job summary

ESP Enterprises, Inc. is seeking a well‑rounded Network Engineer to design, implement, and support enterprise and client networks across LAN/WAN and wireless environments.

The role emphasizes hands‑on Cisco routing and switching, firewall administration, and security best practices, with after‑hours and on‑call duties. You will work with local and client IT teams, monitor network performance, and help deploy upgrades, migrations, and security patches.

Qualifications

• Five+ years of hands-on enterprise network engineering or administration.
• Strong Cisco routing and switching experience.
• Experience with Barracuda firewalls and security appliances.
• Solid TCP/IP knowledge and network fundamentals.

Responsibilities

• Design, configure, and troubleshoot LAN, WAN, WLAN, VPN, and internet connectivity.
• Configure Cisco routers/switches, ASA firewalls, and wireless controllers.
• Administer and troubleshoot Barracuda firewalls and security appliances.
• Diagnose complex network issues using logs, captures, and monitoring tools.
• Coordinate with providers and client IT teams to resolve issues.
• Support planned maintenance, migrations, and upgrades.
• Develop network diagrams and documentation.

Skills

Hands-on network engineering

Cisco routing & switching

Firewall administration

TCP/IP fundamentals

Client communication

Tools

Barracuda CloudGen Firewall

Cisco ASA

Cisco Nexus

SolarWinds

Job description

ESP Enterprises, Inc. is seeking a well‑rounded Network Engineer to design, implement, and support enterprise and client networks across LAN/WAN and wireless environments.

The role emphasizes hands‑on Cisco routing and switching, firewall administration, and security best practices, with after‑hours and on‑call duties. You will work with local and client IT teams, monitor network performance, and help deploy upgrades, migrations, and security patches.