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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Security Engineer - **Company:** NorthMark Strategies - **Location:** Dallas, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Proxy Servers, Software System Penetration Testing, Microsoft Azure, Cloud Computing Security, Cyber Security, DevOps, Domain Name System (DNS), Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), OSI Models, Python (Programming Language), Network Security, Routing, Network Protocols, Ansible, Zero Trust Network Access, Load Balancing, Multi-Cloud, Firewalls (Computer Science), Git, Fortinet, Terraform, Jenkins, Vulnerability Analysis - **Published:** July 17, 2026 - **Apply:** https://www.dice.com/job-detail/404a1c42-d1d7-4e76-a0cd-c197ff792999 ## About the Role * Extensive experience in network engineering and security engineering, along with proven architectural experience in trusted, untrusted and DMZ environments * Proven leadership experience in a senior or lead engineering role, with the ability to drive the team and work individually * Strong understanding of network protocols and the OSI model, with hands-on experience in TCP/UDP-based applications, routing, switching and load balancing * Extensive knowledge of network security technologies, including firewalls, VPNs, proxies, MACsec, IPsec, HTTPS, certificate chains, DNS, NTP, AAA, and domain-based authentication and authorisation * Expertise with multiple security vendors, such as, Palo Alto, Fortinet, Check Point and F5 * Strong understanding of Zero Trust principles, segmentation, and secure cloud networking in AWS or Azure * Familiarity with scripting and automation using Python, Ansible, or Terraform for example * Certifications such as CISSP, CCIE Security, GIAC (GSECIH/GXPN), Palo Alto, Fortinet or equivalent highly preferred The following skills and experience would be beneficial: * Core network with VxLAN EVPN DC architecture experience * Experience with hybrid or multi-cloud environments * Prior involvement in M&A technical integrations * Background in building SOC capabilities or working with MSSPs * Excellent written and verbal communication skills * Firewall automation experience is beneficial It is impossible to list every requirement for, or responsibility of, any position. Similarly, we cannot identify all the skills a position may require since job responsibilities and the Company's needs may change over time. Therefore, the above job description is not comprehensive or exhaustive. The Company reserves the right to adjust, add to or eliminate any aspect of the above description. The Company also retains the right to require all employees to undertake additional or different job responsibilities when necessary to meet business needs. Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future. ## Description As a Senior Network Security Engineer, you will play a critical role in managing, implementing and optimising a hyperscale network security infrastructure. As a technical leader, you will oversee complex security architecture initiatives, mentor peer engineers, handle escalated incident response efforts and ensure compliance with the latest security standards. Our company roadmap is centred on automation, therefore a background in automation and interest in leveraging automation is key to this role., * Mentoring junior and mid-level engineers, overseeing team activities and providing guidance in complex troubleshooting and architecture decisions * Implementing and managing advanced security solutions using firewalls, proxy, system hardening, treat profile and segmentation strategies to secure the intellectual data * Acting as a lead escalation for critical security incidents * Developing automation playbooks, network security policies framework and consolidation, treat model and drive root cause analysis with corrective actions * Overseeing network vulnerability assessments, penetration testing coordination and remediation planning * Championing the integration of automated tools for infrastructure build, day two support and lifecycle management of all security infrastructure using platforms like Python, Terraform, and vendor APIs, leveraging tools such as Algosec, Tufin, Jenkins and Git * Working closely with infrastructure, DevOps and application teams to embed security best practices throughout the technology stack ## Related Videos - [You can’t hack what you can’t see](https://www.wearedevelopers.com/videos/41-you-can-t-hack-what-you-can-t-see) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Dev & Test in the Cloud? 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