Cisco Network Security Engineer, TS/SCI

CDW
United States, California
Apr 10, 2026
Description At CDW, we make it happen, together. Trust, connection, and commitment are at the heart of how we work together to deliver for our customers. It's why we're coworkers, not just employees. Coworkers who genuinely believe in supporting our customers and one another. We collectively forge our path forward with a level of commitment that speaks to who we are and where we're headed. We're proud to share our story and Make Amazing Happen at CDW. Our team is seeking a highly skilled Cisco Network Security Engineer that will work onsite in Seal Beach, CA. The ideal candidate will bring deep hands-on expertise in Cisco network technologies, with a strong emphasis on Identity Services Engine (ISE), network security architecture, and enterprise-level troubleshooting. MUST BE A US CITIZEN and hold and an active TS/SCI clearance and experience operating in secure environments. Key Responsibilities Design, configure, and maintain secure network architectures across classified environments. Implement and manage Cisco security platforms including routers, switches, firewalls, and security appliances. Administer and optimize Cisco Identity Services Engine (ISE) for authentication, authorization, and network access control (NAC). Monitor and assess network performance, security posture, and compliance. Troubleshoot complex network issues and perform root cause analysis. Support continuous improvement of network security policies, procedures, and best practices. Collaborate with cyber, systems, and infrastructure teams to ensure seamless security integration. Prepare documentation, diagrams, and change requests in accordance with government standards. Participate in on-call, incident response, and scheduled maintenance as required. Required Qualifications Active TS/SCI clearance (no exceptions). 5+ years of experience as a Network Engineer or Network Security Engineer. Strong background in Cisco networking technologies (routing, switching, firewalls). Proven experience with Cisco ISE deployment, configuration, and policy management. Hands-on experience with protocols such as BGP, OSPF, EIGRP, 802.1X, TACACS+, and RADIUS. Familiarity with network hardening and cybersecurity principles aligned with DoD or federal guidelines. Ability to work on-site in Seal Beach, CA. Preferred Qualifications Cisco certifications such as CCNP Security, CCNP Enterprise, or CCIE (Security or Enterprise). Experience in DoD or Intelligence Community environments. Knowledge of Cisco ASA, Firepower, or Secure Firewall Threat Defense (FTD). Background with monitoring tools (e.g., SolarWinds, Splunk) or automation (e.g., Python, Ansible). Strong documentation skills and experience with change management processes. CDW is committed to being an AI-fluent organization We're looking for people who bring curiosity, a learner's mindset, and a willingness to engage with ever-evolving technology and tools. We value adopting AI as a partner, openness to experimentation, and a shared interest in learning together on AI. Our goal is to create a culture where AI enhances-not replaces-human creativity and decision-making. You don't need to be an expert today; what matters is your readiness to explore, adapt, and grow with us as we integrate AI responsibly and effectively into our work. Additionally, CDW is committed to fostering an equitable, transparent, and respectful hiring process for all applicants. During our application process, our goal is to understand your experience, strengths, skills, and qualifications. As an AI forward company, we see AI not just as a tool, but as a catalyst for new ways of thinking, creating, and communicating. We encourage candidates to embrace an AI mindset, one that's curious, adaptive, and ready to explore what's possible. We welcome thoughtful use of AI to expand your perspective and elevate how you share your story, while ensuring your application remains rooted in your own background, judgment, and voice. About Us CDW is a Fortune 500 technology solutions provider that helps businesses, government, education, and healthcare organizations achieve what's possible through technology. What makes CDW different isn't just what we do-it's how we do it. At CDW we act as one-building trust, speaking candidly, and working together to achieve more. We play to win-focusing on what matters most and delivering for our customers. And we think forward-staying curious, moving fast, and continuously learning. We believe meaningful work happens when people feel supported, heard, and empowered to contribute. That's why we think of ourselves as coworkers, not just employees-working together to solve complex challenges and deliver real impact for our customers and communities. As a fullstack, fulllifecycle technology partner, CDW brings deep expertise, strong relationships, and broad industry knowledge to help turn ideas into outcomes. When you join CDW, you become part of a collaborative environment where your work matters, your growth is supported, and your contributions help shape what's next. Together, we deliver the full promise of what technology can do. Together, we Make Amazing Happen. CDW is an equal opportunity employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status or any other basis prohibited by state and local law.