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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IT Security Engineer III - **Company:** CareerCircle - **Location:** Dallas, TX, United States (Remote available) - **Experience:** Expert - **Salary:** $107,900.0 - $195,050.0 - **Contract:** Permanent contract - **Skills:** Microsoft Excel, Active Directory, Agile Methodology, Artificial Intelligence, Apple Mac Systems, Application Firewall, Confluence, JIRA, Microsoft Azure, Bash Shell, Border Gateway Protocol, Microsoft Outlook, Ubuntu (Operating System), Cisco PIX, Software as a Service, Cloud Computing, Cloud Computing Security, Cloud Engineering, Collaborative Software, Complex Networks, CompTIA Security+, Cyber Security, Information Systems, Computer Networks, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, Monitoring of Systems, Identity and Access Management, Information Technology Operations, Internet Protocol Security (IP SEC), Internetworking, Virtual Private Networks (VPN), Python (Programming Language), Network Security, Network Troubleshooting, Microsoft Office, Network Diagrams, Routing, Open Shortest Path First (OSPF), Public Key Infrastructure, Microsoft PowerPoint, Windows PowerShell, Remote Access Technology, Azure Active Directory, Zero Trust Network Access, Salesforce.Com, Single Sign-On, TCP/IP, Transmission Control Protocol (TCP), Virtual Local Area Networks, VirtualBox, Virtualization Technology, Wireless Networks, SSL Certificate Management, Scripting, Enterprise Software Applications, IT General Controls (ITGC), Okta, System Availability, Firewalls (Computer Science), Microsoft InTune, Information Technology, Casper Suite, Fortinet, Gsuite, Firepower, Cisco, Servicenow, User Accounts - **Published:** August 15, 2026 - **Apply:** https://www.careercircle.com/jobs/all/all/usa/al/huntsville/3bfdd64c-4cb8-4f32-8223-0a6e08322e13 ## About the Role Firewall Equities Fortinet Cisco PIX Operations Leadership Resilience IT Security Scalability Market Data Cyber Security Cloud Security Ancient History Computer Science Network Security Network Diagrams Complex Networks Change Management Cloud Engineering Security Solutions Root Cause Analysis Network Engineering Enterprise Security Lifecycle Management Technical Leadership Information Technology Infrastructure Security Software Technical Review Engineering Documentation Verbal Communication Skills Enterprise Network Security Security Requirements Analysis Virtual Private Networks (VPN) Troubleshooting (Problem Solving) Transmission Control Protocol (TCP) Internet Protocol Security (IP SEC) Cisco Certified Internetwork Expert Cisco Adaptive Security Appliance (ASA) CISCO Certified Network Professional - Security, * Ability to obtain a Public Trust Clearance. * Bachelor's degree in Information Technology, Cybersecurity, Computer Science, or a related field, or equivalent experience. * 7+ years of experience in network security, cybersecurity, or infrastructure engineering. * Strong understanding of enterprise networking including: + TCP/IP + Routing and Switching + BGP + OSPF + VLANs + NAT + High Availability + VPN technologies * Experience engineering and administering enterprise firewall platforms such as Fortinet and Cisco ASA/Firepower. * Experience designing and implementing secure network architectures within large enterprise environments. * Experience troubleshooting complex security and networking issues across multi-vendor environments. * Experience following structured change management and engineering lifecycle processes. * Strong written and verbal communication skills with the ability to present technical concepts to both technical and non-technical audiences. Preferred Qualifications * Industry certifications such as: + Fortinet Network Security Expert (FCP, FCSS, FCX) + Cisco CCNP Security or CCIE Security + CISSP + GIAC certifications * Experience with: + Fortinet Security Fabric + Cisco ASA/Firepower + Secure Access Service Edge (SASE) + Web Application Firewalls (WAF) + IPsec VPN technologies + PKI and certificate management + Zero Trust architectures * Experience supporting cloud security platforms * Experience working in large enterprise, federal government, or Department of Defense environments. * Experience supporting highly available, mission-critical infrastructure. * Demonstrated ability to lead engineering projects and mentor junior engineers. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares., Operations Leadership Management Automation Governance Reliability Coordinating Primary Care Communication Investigation Observability Cyber Security Azure Security Security Tools SOC 2 Auditing Detail Oriented Microsoft Azure Problem Solving Access Controls Computer Science Active Directory Security Controls Security Policies Change Management Incident Response CompTIA Security+ System Monitoring Disaster Recovery Influencing Skills Value Propositions Windows PowerShell Business Valuation Financial Services Workflow Management Root Cause Analysis Evidence Collection Continuous Auditing Sustainable Systems, Problem Solving Customer Service Active Directory Google Workspace Operating Systems Wireless Networks Endpoint Security Device Management Windows PowerShell Business Valuation Root Cause Analysis Engineering Support Endpoint Management Single Sign-On (SSO) Atlassian Confluence Endpoint Engineering IT Service Management CompTIA Certification Remote Access Systems Full Stack Development Azure Active Directory Collaborative Software Artificial Intelligence Technical Documentation Infrastructure Security Wireless Communications Network Troubleshooting Business Transformation Bash (Scripting Language) Ubuntu (Operating System) Verbal Communication Skills Python (Programming Language) Continuous Improvement Process Virtual Private Networks (VPN) Identity And Access Management Microsoft Certified Professional Troubleshooting (Problem Solving) Dynamic Host Configuration Protocol (DHCP) Microsoft Intune (Mobile Device Management Software) +0 Salesforce Admin, Curiosity Marketing Dashboard Annuities Leadership Management Governance Mitigation Cyber Risk Wholesaling Fundraising Multitasking Data Quality Communication Presentations Risk Analysis Security Risk Prioritization Team Processes Tax Accounting Detail Oriented Microsoft Excel Risk Mitigation Risk Management Social Security Microsoft Office Virtual Training Auditor's Report Agile Methodology Microsoft Outlook Critical Thinking Change Management Project Management Influencing Skills Process Improvement Microsoft PowerPoint Willingness To Learn Functional Knowledge Organizational Skills Emerging Technologies Information Synthesis Reporting and Analysis Artificial Intelligence Regulatory Requirements Employment Applications Security Risk Management Ability To Meet Deadlines Verbal Communication Skills Interpersonal Communications Employee Assistance Programs Health And Wellness Coaching Continuous Improvement Process Technical Procedure Compliance ## Description We are seeking an experienced IT Security Engineer III to join the AEGIS Security Infrastructure Engineering team supporting the NASA AEGIS Program. This role is responsible for the design, engineering, implementation, and lifecycle management of enterprise network security infrastructure supporting NASA's mission-critical environments., The IT Security Engineer III serves as a senior technical resource responsible for architecting, implementing, and supporting complex security solutions across a large-scale, multi-vendor enterprise environment. This position works closely with operations teams, architects, program leadership, and customer stakeholders to develop secure, scalable, and resilient infrastructure while ensuring compliance with NASA security standards and federal requirements., * Design, engineer, implement, and maintain enterprise network security solutions supporting NASA mission environments. * Lead engineering efforts involving Fortinet, Cisco ASA/Firepower, Secure Access Service Edge (SASE), Web Application Firewalls (WAF), VPN technologies, and other enterprise security platforms. * Serve as the technical lead for complex infrastructure deployments, modernization initiatives, and security enhancement projects. * Develop secure network architectures and provide technical guidance for new and existing enterprise environments. * Perform advanced troubleshooting, root cause analysis, and resolution of complex network security issues. * Develop implementation plans, engineering documentation, network diagrams, standards, and operational procedures. * Lead change management activities including technical reviews, implementation planning, and post-change validation. * Evaluate emerging security technologies and provide recommendations for adoption within the enterprise. * Collaborate with cybersecurity, network engineering, operations, cloud engineering, and customer stakeholders to deliver integrated security solutions. * Ensure enterprise security infrastructure complies with NASA, federal, and industry security requirements and best practices. * Mentor junior engineers and provide technical leadership across engineering initiatives. * Participate in after-hours maintenance windows and provide escalation support as required., Cloud Infrastructure, System Administration Information Technology Full Stack Development Operational Resilience Artificial Intelligence Technical Documentation Business Transformation IT General Controls (ITGC) Software As A Service (SaaS) Python (Programming Language) Influencing Without Authority Continuous Improvement Process Technical Procedure Compliance Enterprise Application Software Information Technology Operations Troubleshooting (Problem Solving) Sarbanes-Oxley Act (SOX) Compliance Governance Risk Management And Compliance Certified Information System Auditor (CISA) Certified In Risk And Information Systems Control +0 IT Client Services Engineer TEKsystems Foster City, CA*Remote Okta JIRA Jamf Linux Mac OS TCP/IP Scripting Operations Leadership Automation ServiceNow VirtualBox User Accounts Virtualization ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Checkmate: 5 Real Incidents That Can End a Software Company](https://www.wearedevelopers.com/videos/100126-checkmate-5-real-incidents-that-can-end-a-software-company) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) ## Related Articles - [Events like RSAC Get You CISOs. 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