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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Security Engineer 3 - **Company:** VDart, Inc. - **Location:** Las Vegas, NV, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** CompTIA Security+, Network Security, Simple Network Management Protocols, Scripting, Identity Services Engine, Load Balancing, Firewalls (Computer Science), Palo Alto Networks, Firewall Services Module, Open Network Automation Platform, Cisco Switches, Cisco, Citrix Netscaler - **Published:** September 29, 2026 - **Apply:** https://www.careerjet.com/jobad/us9afb0fcd80e7e4fbb29970665909c3ce ## About the Role * 5+ years of experience in network security, focused on firewall management and delivering enterprise-scale technical solutions with operational support. * Demonstrated ability to design and implement secure network architectures aligned with business and technical requirements. * Proficient in translating complex requirements into actionable solutions and articulating the business value of network security designs. * Skilled in quantitative analysis, problem-solving, and leveraging data to drive technical decision-making and continuous improvement. * Experienced with network automation tools, scripting, and the integration of modern solutions such as Zscaler with traditional firewall technologies. * Hands-on experience with Palo Alto, Cisco, and Netscaler (or equivalent load balancer platforms), including tools such as Cisco Catalyst Center and Identity Services Engine (ISE). * Strong project management and cross-functional collaboration skills, with the ability to lead initiatives and support firm-wide innovation. * Certifications such as Cisco Security Specialist, Palo Alto Networks, and CompTIA Security+ are preferred; recently expired certifications will be considered. ## Description The Senior Network Firewall Engineer is responsible for leading the design, delivery, and support of network security solutions in a complex, distributed enterprise environment. Acting with a product ownership mindset, this role ensures firewall and connectivity solutions enhance the organization's security, resilience, and agility. The engineer will contribute to secure connectivity strategy, manage firewall policies, support incident and problem resolution, monitor application, and network health, and ensure compliance with industry standards. Staying ahead of emerging threats and trends, this role plays a critical part in maintaining and improving the enterprise's overall security posture. THE DAY-TO-DAY: * Lead the delivery of scalable, resilient, and secure firewall solutions across a large, distributed enterprise network, aligning with organizational security requirements and industry best practices. * Utilize SNMP, network security policy tools, and observability platforms to monitor network health, ensure capacity planning, and drive proactive issue identification and resolution. * Lead complex incident response and root cause analysis for application-layer network security issues, driving continuous improvement and enhancing vendor governance to ensure quality and cost-effective outcomes. * Ensure firewall configurations and policies meet regulatory requirements (e.g., PCI, Gaming Control Boards) and adhere to evolving industry standards through regular audits and policy reviews. * Drive preventative maintenance and respond to operational issues to maintain optimal network performance, availability, and security posture. * Maintain comprehensive security documentation and lead regular governance reviews to validate and evolve network security strategies, policies, and configurations. * Collaborate with business and technical teams to ensure network security initiatives support broader business goals, while leading continuous improvement efforts focused on cost, scalability, supportability, and performance. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [gRPC Load Balancing Deep Dive](https://www.wearedevelopers.com/videos/1576-grpc-load-balancing-deep-dive) - [JavaScript? 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