Network Security Engineer

Network Security EngineerKimley-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.This is not a remote position. 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.ResponsibilitiesFirewall Ownership & Network Security (Primary Focus)Serve as the primary owner of Kimley-Horn's enterprise firewall environment, including design, implementation, and ongoing optimizationCreate, review, and maintain firewall policies and rules across on-prem and cloud environmentsLead firewall strategy decisions, including policy standardization, segmentation, and performance tuningAdminister and optimize Palo Alto firewalls and PanoramaManage and enhance GlobalProtect policies and secure remote access configurationsAnalyze and implement ACLs, rule bases, and logical security controls across a multi-vendor environmentDrive continuous improvement in firewall posture, balancing security and user experienceCloud & Application SecuritySupport and manage Next-Gen Firewalls in Azure environmentsAdminister and optimize Web Application Firewalls (WAFs)Participate in SASE and cloud security architecture discussions and reviewsNetwork Security Engineering & OperationsImplement and maintain network security controls, including firewalls, VPNs, IDS/IPS, and access controlsTroubleshoot complex networking and security issues across cloud and hybrid environmentsMonitor 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 perspectiveEmerging Security CapabilitiesAssist in evaluating and implementing Network Detection & Response (NDR) solutionsSupport the transition and ongoing ownership of Cisco ISE capabilitiesContribute to security tooling decisions, standards, and long-term strategyCollaboration & Leadership (Non-People Management)Coordinate and guide work across matrixed IT partnersProvide technical guidance, training, and mentorship on network security best practicesParticipate in incident response, change management, and after-hours maintenance for critical eventsQualificationsBachelor's degree in Information Security, Cybersecurity, or a related field4+ years of experience in network security engineering or related roles within enterprise environmentsStrong hands-on experience with firewall design, implementation, and management (required)Direct experience with Palo Alto firewalls and PanoramaExperience with firewall architectures across internal, perimeter, and cloud environmentsExperience administering Web Application Firewalls (WAFs)Experience with Cisco ISE or similar identity-based network access platformsSolid understanding of networking fundamentals (routing, switching, TCP/IP, DNS, DHCP)Experience with change management practices and operational processesStrong problem-solving skills and ability to perform under pressureExcellent communication skills with the ability to explain technical concepts to non-technical stakeholdersPreferred Certifications: Security+, Network+, CCNP Security, AZ-700/AZ-500, CISSP, or similarWhy 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-HornExceptional Retirement Plan: 2-to1- 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.