Network Security Engineer

Kimley-Horn; Dallas (TX); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Exceptional Retirement Plan

Comprehensive Health Coverage

Time Off including half-day Fridays

Professional Development opportunities

Family-Friendly Benefits

Job summary

Kimley-Horn in Dallas is hiring a Network Security Engineer to lead their network security function, focusing on firewall architecture. This role involves managing the enterprise firewall, optimizing policies, and enhancing security posture across cloud and hybrid environments. Candidates should have at least 4 years of network security experience and strong skills in Palo Alto technologies.

The position is ideal for those looking to take ownership of critical security domains in a supportive work environment, with opportunities for professional growth.

Qualifications

• 4+ years of experience in network security engineering or related roles.
• Strong hands-on experience with firewall design, implementation, and management.
• Solid understanding of networking fundamentals including TCP/IP, DNS, and DHCP.

Responsibilities

• Own and optimize the enterprise firewall environment.
• Create and maintain firewall policies across on-prem and cloud environments.
• Implement security controls including firewalls, VPNs, and IDS/IPS.

Skills

Network security engineering

Firewall management

Palo Alto firewalls

Networking fundamentals

Problem-solving skills

Education

Bachelor’s degree in Information Security or Cybersecurity

Tools

Palo Alto Panorama

Web Application Firewalls (WAFs)

Cisco ISE

Job description

Overview

Kimley-Horn is seeking a Network Security Engineer to help lead and mature our network security function, with a primary focus on enterprise firewall architecture and operations.

This is a foundational role within our Information Security team, where you’ll take ownership of a growing firewall environment, influence security strategy, and help define the future of network security across a rapidly expanding, multi-site organization.

If you have a strong networking background and deep hands‑on firewall experience—especially in Palo Alto environments—this is an opportunity to truly own and evolve a critical security domain.

Applicants must be legally authorized to work for Kimley-Horn in the U.S. without employer sponsorship. We do not typically sponsor H1-B or other work visa petitions.

Responsibilities

• Serve as the primary owner of Kimley-Horn’s enterprise firewall environment, including design, implementation, and ongoing optimization
• Create, review, and maintain firewall policies and rules across on‑prem and cloud environments
• Lead firewall strategy decisions, including policy standardization, segmentation, and performance tuning
• Administer and optimize Palo Alto firewalls and Panorama
• Manage and enhance GlobalProtect policies and secure remote access configurations
• Analyze and implement ACLs, rule bases, and logical security controls across a multi‑vendor environment
• Drive continuous improvement in firewall posture, balancing security and user experience

Cloud & Application Security

• Support and manage Next‑Gen Firewalls in Azure environments
• Administer and optimize Web Application Firewalls (WAFs)
• Participate in SASE and cloud security architecture discussions and reviews

Network Security Engineering & Operations

• Implement and maintain network security controls, including firewalls, VPNs, IDS/IPS, and access controls
• Troubleshoot complex networking and security issues across cloud and hybrid environments
• Monitor and resolve network performance issues (latency, throughput, utilization, system slowness)
• Partner with Network Operations and Cloud teams to review designs and provide a security‑first perspective

Emerging Security Capabilities

• Assist in evaluating and implementing Network Detection & Response (NDR) solutions
• Support the transition and ongoing ownership of Cisco ISE capabilities
• Contribute to security tooling decisions, standards, and long‑term strategy

Collaboration & Leadership (Non‑People Management)

• Coordinate and guide work across matrixed IT partners
• Provide technical guidance, training, and mentorship on network security best practices
• Participate in incident response, change management, and after‑hours maintenance for critical events

Qualifications

• Bachelor’s degree in Information Security, Cybersecurity, or a related field
• 4+ years of experience in network security engineering or related roles within enterprise environments
• Strong hands‑on experience with firewall design, implementation, and management (required)
• Direct experience with Palo Alto firewalls and Panorama
• Experience with firewall architectures across internal, perimeter, and cloud environments
• Experience administering Web Application Firewalls (WAFs)
• Experience with Cisco ISE or similar identity‑based network access platforms
• Solid understanding of networking fundamentals (routing, switching, TCP/IP, DNS, DHCP)
• Experience with change management practices and operational processes
• Strong problem‑solving skills and ability to perform under pressure
• Excellent communication skills with the ability to explain technical concepts to non‑technical stakeholders

Preferred Certifications: Security+, Network+, CCNP Security, AZ-700/AZ‑500, CISSP, or similar

Why Kimley-Horn?

At Kimley-Horn, we do things differently. People, clients, and employees are at the forefront of who we are. Clients know we prioritize achieving their goals and growing their success. Employees know our culture and approach to business are built on a desire to provide an environment for everyone to flourish. Our commitment to quality is only as good as the people behind it— that’s why we welcome and develop passionate, hardworking, and proactive employees. We take pride in how our employee retention, robust benefits package, and company values have led to Kimley-Horn’s placement on the Fortune “100 Best Companies to Work” list for 19 years!

Key Benefits at Kimley-Horn

• Exceptional Retirement Plan: 2‑to‑1 company match on up to 4% of eligible compensation (salary + bonus) and additional profit‑sharing contribution.
• Comprehensive Health Coverage: Low‑cost medical, dental, and vision insurance options.
• Time Off: Personal leave, flexible scheduling, floating holidays, and half‑day Fridays.
• Financial Wellness: Student loan matching in our 401(k), and performance‑based bonuses.
• Professional Development: Tuition reimbursement and extensive internal training programs.
• Family‑Friendly Benefits: New Parent Leave, family building benefits, and childcare resources.