Network Security Engineer

Brooksource; Atlanta (GA); Hybrid; USD 100,000 - 140,000; Full time

Job summary

Brooksource is seeking an Infrastructure Security Engineer for a critical backfill role in Atlanta. Ideal candidates will have strong hands-on experience across various infrastructure security technologies including Palo Alto firewalls, Zscaler, and PKI. The position offers a hybrid work model, with local candidates expected to be onsite at least one day per week. This role is perfect for a senior-level security generalist ready to support enterprise security initiatives.

Qualifications

• Strong experience as an Infrastructure Security Engineer or similar role.
• Proven background as a security generalist with multiple security tools.
• Heavy hands-on experience with Palo Alto firewalls and Zscaler.

Responsibilities

• Serve as a senior-level infrastructure security engineering resource.
• Support and optimize enterprise security infrastructure technologies.
• Administer and enhance Zscaler solutions including ZPA and ZIA.

Skills

Infrastructure Security Engineering

Network Security Engineering

Palo Alto Firewalls

Zscaler

Public Key Infrastructure (PKI)

TLS Certificate Lifecycle Management

Cisco Identity Services Engine (ISE)

Web Application Firewalls

Zero Trust Network Access (ZTNA)

Troubleshooting Skills

Tools

Cisco Meraki

Job description

Job Title: Infrastructure Security Engineer (Contract)

Location: Atlanta preferred, but not required. Local candidates should expect to be onsite at least 1 day per week. Remote candidates may be considered for the right fit.

Type: Contract

Overview

We are seeking a Infrastructure Security Engineer to step into a critical backfill role supporting a broad range of enterprise infrastructure security initiatives. This position is ideal for a senior-level security generalist with strong hands-on engineering experience across multiple infrastructure and security technologies, rather than someone narrowly focused on one specialty.

This individual will help maintain continuity during the transition of a lead-level team member and will serve as a key technical resource across core network and infrastructure security functions.

Key Responsibilities

• Serve as a senior-level infrastructure security engineering resource across multiple domains
• Support, maintain, and optimize enterprise security infrastructure technologies
• Engineer, administer, and troubleshoot Palo Alto firewalls
• Support and manage Cisco Identity Services Engine (ISE) for network access control
• Administer and enhance Zscaler solutions, including:
• Zscaler Private Access (ZPA)
• Zscaler Internet Access (ZIA)
• Zscaler Cloud App Control
• Support Public Key Infrastructure (PKI) environments
• Manage TLS certificate lifecycle processes, including issuance, renewal, and maintenance
• Support Web Application Firewall (WAF) technologies
• Assist with Cisco Meraki administration and support as needed
• Contribute to secure access strategy with a foundational understanding of Zero Trust Network Access (ZTNA) principles
• Partner with infrastructure and security teams to strengthen security posture across the environment
• Provide troubleshooting, operational support, and engineering guidance across a variety of infrastructure security priorities
• Help ensure continuity and stability during a key leadership backfill

Required Qualifications

• Strong experience as an Infrastructure Security Engineer, Network Security Engineer, or similar senior-level security engineering role
• Proven background as a security generalist with experience across multiple security and infrastructure tools
• Heavy hands-on experience with Palo Alto firewalls
• Strong hands-on experience with Zscaler, especially ZPA and ZIA
• Experience supporting Public Key Infrastructure (PKI)
• Experience with TLS certificate lifecycle management
• Experience with Cisco Identity Services Engine (ISE) or similar network access control technologies
• Experience supporting or administering Web Application Firewalls
• Familiarity with Cisco Meraki
• Foundational understanding of Zero Trust Network Access (ZTNA) concepts
• Strong troubleshooting, communication, and cross-functional collaboration skills
• Ability to operate independently in a lead-level engineering capacity

Preferred Qualifications

• Atlanta-based candidates preferred, but not required
• Local candidates should be comfortable working onsite at least 1 day per week
• Prior experience stepping into backfill or transition-focused roles
• Experience supporting a broad mix of infrastructure and security technologies in an enterprise environment
• Especially strong experience with Cisco ISE, as this may be one of the harder skill sets to find in market
• Atlanta local preferred, but not a requirement
• Hybrid expectation of at least 1 day onsite per week for local candidates
• Remote candidates may be considered for the right skill set and experience