Network Security Engineer

Job Summary:

Our client is seeking a Network Security Engineer to join their team! This position is located in Irving, Texas.

Duties

• Design, implement, operate, and maintain Fortinet FortiGate firewalls across global environments (data centers, offices, business edge sites)
• Manage legacy firewalls during migration efforts: Juniper SRX, Cisco ASA and Cisco FTD
• Use FortiManager and FortiAnalyzer for centralized configuration, automation, and reporting
• Support evaluation and potential adoption of FortiSOAR and FortiSandbox
• Collaborate with OT teams handling Palo Alto
• Develop and maintain infrastructure automation for firewall policy management and firewall deployments
• Build automation using tools such as Ansible, Terraform, GitHub, Python, REST APIs, Jenkins, Jinja2, and YAML
• Contribute to the organization’s Zero-Ops strategy by reducing manual operations and improving system reliability
• Support deployment and management of virtual firewalls in cloud environments (AWS and Azure)
• Assist in future SD WAN technology integration, including potential migration to Fortinet based SD WAN
• Perform monitoring, troubleshooting, incident response, and vulnerability assessment
• Manage upgrades, patches, break/fix, and operational run tasks
• Participate in a rotating global on-call schedule
• Troubleshoot network issues using logs in FortiAnalyzer and Splunk
• Work directly with cybersecurity, network engineering, cloud, applications, and project delivery teams
• Create and maintain documentation, runbooks, and operational processes
• Engage with internal stakeholders to understand requirements and deliver secure, scalable solutions

Desired Skills/Experience:

• 5 years of hands-on experience in network security engineering and/or operations
• Expertise with enterprise firewall platforms: Fortinet FortiGate; Cisco ASA / CSM; Cisco FTD / FMC; Juniper SRX (Junos Space)
• Strong understanding of networking fundamentals: TCP/IP, OSI model, routing/switching, ACLs
• Experience with firewalls, VPNs, IDS/IPS, NAT, DNS, and authentication technologies required
• Experience with automation and DevOps tooling: Ansible, Terraform, GitHub, Python, Jinja2, REST APIs, Jenkins required
• Cloud security experience with AWS and Azure required
• Strong troubleshooting skills in routing/switching environments, especially with VRF and VXLAN
• Experience with tools such as Datadog and Algosec
• Familiarity with Agile/SAFe work methodologies
• Fortinet: FCA, FCSS, NSE certifications
• Cisco: CCNA/CCNP Security
• Security: CISSP, GIAC

Benefits:

• Medical, Dental, & Vision Insurance Plans
• Employee-Owned Profit Sharing (ESOP)
• 401K offered

The approximate pay range for this position is between $55.94 and $79.92. Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums.

At KellyMitchell, our culture is world class. We’re movers and shakers! We don’t mind a bit of friendly competition, and we reward hard work with unlimited potential for growth. This is an exciting opportunity to join a company known for innovative solutions and unsurpassed customer service. We're passionate about helping companies solve their biggest IT staffing & project solutions challenges. As an employee-owned, women-led organization serving Fortune 500 companies nationwide, we deliver expert service at a moment's notice.

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