Network Security Engineer

Career Techniques; Dallas (TX); Hybrid; USD 85,000 - 115,000; Full time

Job summary

Career Techniques in Dallas, Texas is seeking a Network Security Engineer to implement security solutions and respond to incidents while driving automation initiatives. You will work closely with Security Engineering, Infrastructure, and DevOps teams to embed security best practices across the technology stack.

The ideal candidate will have 5+ years in network security, a strong understanding of network protocols, and experience with firewall technologies. Familiarity with scripting and automation using Python or Terraform is essential for success in this role.

Qualifications

• 5+ years of experience in network security engineering in various environments.
• Strong understanding of the OSI model and network protocols.
• Solid knowledge of firewalls, VPNs, and network security technologies.

Responsibilities

• Implement and manage network security solutions.
• Respond to network security incidents and support corrective actions.
• Develop and maintain automation scripts and security playbooks.

Skills

Network security engineering

Automation and scripting

Problem-solving

Knowledge of firewalls

Understanding of network protocols

Education

Relevant certifications (CISSP, CCNP Security, GIAC)

Tools

Python

Terraform

Ansible

Jenkins

Job description

Working alongside Security Engineering, Infrastructure, and DevOps teams, you will implement security solutions, respond to incidents, drive automation initiatives, and help embed security best practices across the technology stack. Automation is central to our roadmap — a background in automation and a drive to continuously improve how we operate is key to this role.

Responsibilities

• Implement and manage network security solutions including firewalls, proxies, system hardening, threat profiling, and segmentation strategies to protect the integrity of our compute environment
• Respond to network security incidents, supporting triage and resolution efforts and contributing to root cause analysis and corrective actions
• Develop and maintain automation scripts, security playbooks, and policy frameworks to enable consistent, repeatable security operations
• Contribute to network vulnerability assessments and support remediation planning to close identified gaps
• Support the automation of security infrastructure build, day-two operations, and lifecycle management using platforms such as Python, Terraform, Algosec, Tufin, Jenkins, and Git
• Work closely with Infrastructure, DevOps, and Application teams to embed security controls throughout the technology stack
• Maintain accurate documentation of security configurations, procedures, and network topology

Requirements

• 5+ years of experience in network security engineering, with hands-on experience across trusted, untrusted, and DMZ environments
• Strong understanding of network protocols and the OSI model, with practical experience in TCP/UDP-based applications, routing, switching, and load balancing
• Solid knowledge of network security technologies including firewalls, VPNs, proxies, MACsec, IPsec, HTTPS, certificate chains, DNS, NTP, AAA, and domain-based authentication and authorization
• Experience with one or more leading security vendors such as Palo Alto, Fortinet, Check Point, or F5
• Familiarity with Zero Trust principles, network segmentation, and secure cloud networking in AWS or Azure
• Hands-on experience with scripting and automation using Python, Ansible, or Terraform
• Strong problem-solving skills, a self-driven work ethic, and a passion for technology
• Relevant certifications such as CISSP, CCNP Security, GIAC (GSEC/GCIH), Palo Alto, or Fortinet are a plus

Nice to Have

• Experience with VxLAN EVPN data center architecture
• Experience in hybrid or multi-cloud environments
• Background in SOC operations or working with MSSPs
• Firewall automation experience