> Markdown version of [/jobs/ext/2939481-lead-firewall-engineer](https://www.wearedevelopers.com/jobs/ext/2939481-lead-firewall-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Firewall Engineer - **Company:** SITEC Consulting - **Location:** Springfield, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Active Directory, Cyber Security, Kerberos (Protocol), Network Security, Lightweight Directory Access Protocols (LDAP), Network Planning and Design, OAuth, Public Key Infrastructure, Security Assertion Markup Language (SAML), Transport Layer Security, Firewalls (Computer Science), Juniper, Information Technology - **Published:** September 16, 2026 - **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2973721036-2 ## About the Role eight years of network security experience, including five years supporting large enterprise networks.Experience leading a firewall or boundary security team.Advanced experience with Palo Alto, Juniper SRX, and F5 platforms.Strong knowledge of firewall policy, TLS/SSL, PKI, Kerberos, LDAP, Active Directory, SAML, OAuth, and network architecture.Experience with network design, implementation, cost estimates, and labor estimates.Current DoD 8140/8570 IAT Level II certification.Ability to obtain CSSP Infrastructure Support certification within 120 days.Availability for occasional evening or weekend work.Preferred QualificationsBachelor 's or master's degree in computer science, cybersecurity, network security, or a related field.F5, Juniper, or Palo Alto professional certification. ## Description Job Description Job Description Lead Firewall EngineerClearance: Active TS/SCIExperience: 8+ yearsLead an enterprise boundary security team responsible for firewall operations, engineering, compliance, and modernization. You will provide technical direction, oversee complex troubleshooting, and support secure, reliable network performance.What You Will DoLead daily firewall operations, maintenance, troubleshooting, and project execution.Design and implement solutions using Palo Alto, Juniper SRX, and F5 technologies.Review network changes and assess operational and security impacts.Maintain secure configuration baselines, architecture diagrams, inventories, procedures, and technical documentation.Monitor performance, logs, software versions, and configuration drift.Lead compliance reviews, technical evaluations, and modernization efforts.Brief stakeholders and mentor engineering personnel.What You BringActive TS/SCI clearance with the ability to obtain and maintain a CI polygraph.At least ## Related Videos - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) ## Related Articles - [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)