Network Security Architect

Arganteal, Corp.•Chicago, IL

15h•Remote

About The Position

We are seeking an experienced Senior Network Security Architect to join our team. In this role, you will be responsible for the design, architecture, and implementation of enterprise network security solutions. You will work closely with engineering and operations teams to deliver secure, scalable, and resilient network infrastructures.

Requirements

A minimum of 10 years' progressive experience in a Network Security related field
Cisco certifications such as CCNP Security, CCIE Security, or equivalent
Palo Alto certifications such as PCNSA or PCNSE
Experience with SD-WAN, SASE, or cloud security platforms (AWS, Azure)
Familiarity with ITIL change management processes
Scripting or automation experience (Python, Ansible) for network security tasks
5–10 years of experience in network security architecture and engineering
Hands-on expertise with Cisco Firepower (FTD/FMC) — policy management, IPS, and threat inspection
Strong proficiency with Cisco ASA — configuration, NAT, VPN (site-to-site and remote access), and troubleshooting
Deep experience with Cisco ISE — endpoint profiling, posture assessment, RADIUS/TACACS+, and guest access
Proven experience producing LLDs and design documentation to a professional standard
Demonstrated ability to write clear, accurate MOPs for complex network changes
Strong understanding of network protocols — BGP, OSPF, EIGRP, VLAN, spanning tree, and QoS
Experience with network segmentation, micro-segmentation, and zero-trust principles

Nice To Haves

Hands-on experience with Palo Alto Networks OEM hardware — NGFW deployment, PAN-OS configuration, security policy management, and threat prevention
Familiarity with Panorama for Palo Alto firewall management
Experience with Palo Alto GlobalProtect VPN and URL filtering
Working knowledge of Palo Alto Cortex or WildFire threat intelligence platforms

Responsibilities

Design and architect enterprise network security solutions including firewalls, access control, and network segmentation
Develop Low-Level Designs (LLDs) and High-Level Designs (HLDs) for network security infrastructure
Build and deliver detailed Methods of Procedure (MOPs) for implementation and change activities
Deploy, configure, and manage Cisco Firepower Threat Defense (FTD) and Cisco ASA firewalls
Design and implement network access control solutions using Cisco Identity Services Engine (ISE), including 802.1X, MAB, and policy enforcement
Deploy and manage Palo Alto Networks OEM hardware including Next-Generation Firewalls (NGFWs) and associated security platforms
Lead end-to-end project delivery from requirements gathering through build and go-live
Conduct security assessments and provide recommendations to improve the overall security posture
Collaborate with stakeholders to translate business requirements into technical security designs
Provide technical guidance and mentorship to junior engineers
Maintain documentation standards and ensure designs align with industry best practices and compliance requirements