IT Network Engineer

Paragon Space Development Corp.; Tucson (AZ); On-site; USD 120,000 - 150,000; Full time

Job summary

Paragon Space Development Corp. in Tucson seeks a Senior Network Engineer to design, implement, and manage the enterprise network with a focus on Cisco technologies. You will oversee ISE, 802.1X, VPNs, WAN, and hybrid cloud connectivity, ensuring security, availability, and performance across sites.

The role requires strong routing, security, and documentation, with on-call duties and occasional travel. The ideal candidate has 7+ years of enterprise networking experience, CCNA, and hands-on

Qualifications

• Bachelor’s degree or equivalent experience.
• 7+ years in enterprise network engineering.
• Strong Cisco networking expertise including ISE, WLC, 802.1X, and VPN.
• Proficiency with LAN/WAN, dynamic routing (EIGRP/OSPF/BGP).
• Experience with Windows Server, Windows clients, and Linux.
• Knowledge of DNS, DHCP, certificates, and core network services.
• Solid cybersecurity practices and network hardening.
• Cisco CCNA certification required.
• Ability to lift 50 lbs and travel as needed.

Responsibilities

• Design, deploy, and optimize Cisco network infrastructure.
• Lead administration of Cisco ISE and 802.1X authentication.
• Manage routing, VPNs, WAN, and cloud network integrations.
• Maintain availability, security, and performance via monitoring and capacity planning.
• Implement network security controls and baselining.
• Collaborate with IT/security leadership on architectures.
• Serve as technical lead for network projects and upgrades.
• Provide advanced troubleshooting for escalations.
• Maintain accurate documentation and diagrams.
• Participate in on-call rotations and travel to remote sites.

Skills

Cisco networking

ISE and 802.1X

LAN/WAN architecture

VPN technologies

Windows/Linux servers

Network security

Documentation

Education

Bachelor’s degree or equivalent

Tools

Cisco IOS

WLC

ISE

Job description

Position Summary:

The Senior Network Engineer is responsible for the design, implementation, and management of the organization’s enterprise network with a strong focus on Cisco technologies. This role oversees advanced network security controls, access solutions, and infrastructure reliability across all sites.

Key Responsibilities

• Design, deploy, and optimize Cisco network infrastructure including switches, routers, firewalls, WLCs, and related technologies.
• Lead administration of Cisco Identity Services Engine (ISE) and 802.1X authentication for wired and wireless access.
• Manage and support dynamic routing protocols (EIGRP, OSPF, BGP), site-to-site and remote-access VPNs, WAN connectivity, and hybrid cloud network integrations (including secure connectivity to cloud providers).
• Maintain network availability, security, and performance through proactive monitoring, lifecycle planning, and capacity forecasting.
• Implement and enforce network security controls, segmentation strategies, and secure configuration baselines.
• Collaborate with IT and security leadership to design network architectures and present proposed solutions.
• Serve as technical lead for infrastructure projects, upgrades, and enterprise network initiatives.
• Provide advanced troubleshooting support for escalated incidents.
• Maintain accurate documentation, diagrams, inventory, and operational procedures.
• Participate in on call; occasional travel to remote sites as needed.

Minimum Qualifications:

• Bachelor’s degree or equivalent professional experience.
• 7+ years of progressive network engineering experience in enterprise environments.
• Advanced hands-on experience with Cisco networking platforms, including ISE, WLC, 802.1X, and VPN technologies.
• Strong expertise with LAN/WAN architectures and dynamic routing (EIGRP, OSPF, BGP).
• Proficiency supporting Windows Server, Windows client networks, and Linux-based systems.
• Demonstrated experience with DNS, DHCP, certificates, and core network services.
• Solid understanding of cybersecurity best practices and network hardening.
• Current Cisco CCNA certification required.
• Ability to lift to 50 lbs and work in varied environments.

Preferred Qualifications:

• Cisco CCNP, CCNP Security, or equivalent advanced certifications.
• Experience with Windows Server 2019 or newer.
• Experience supporting compliance frameworks such as NIST, PCI, SOX, or FISMA.
• Virtualization experience is a plus.