Senior Network Security Engineer

CACI•Columbia, MD

3d•Onsite

About The Position

Senior Network Security Engineer – Advance the Mission with CACI! At CACI, we don’t just work on technology—we deliver solutions that strengthen national security and empower critical missions around the world. We’re looking for an experienced Senior Network Security Engineer who is ready to bring deep technical expertise, curiosity, and a commitment to excellence to our high‑impact programs. In this role, you’ll play a pivotal part in designing, evaluating, and securing complex network and hardware systems that support vital intelligence operations. You will partner with mission stakeholders, engineers, and technical teams to deliver secure, reliable, and innovative solutions that keep our customers a step ahead. If you’re driven by purpose, inspired by challenge, and ready to grow your career in an environment built on integrity and innovation, CACI is the place to make your mark.

Requirements

An active NSA TS/SCI with Polygraph.
8+ years of Network Security Engineering experience supporting complex SIGINT hardware systems.
Bachelor’s degree in a related technical field, or 5 additional years of experience in lieu of degree.
DoD 8570 IAT Level II certification.
At least three of the following certifications: – PCNSA – SNSA – SNSP – Symantec ProxySG 6.7 Technical Specialist – Cisco CCNA or higher

Responsibilities

Conduct onsite assessments and document current network architectures and mission‑specific requirements.
Lead and coordinate hardware installations across multiple environments.
Recommend hardware specifications tailored to unique project needs.
Support systems engineering teams by modeling and analyzing proposed solutions.
Design, verify, and implement hardware test interfaces.
Perform MTBF/MTTR analyses to strengthen reliability and maintainability.
Analyze operational data to identify system vulnerabilities and performance gaps.
Evaluate LAN/WAN designs and ensure architectures adhere to mission security needs.
Research and assess COTS/GOTS technologies to drive mission capability.
Provide high‑level expertise in network engineering, architecture, and planning.
Contribute to technical standards, interface specifications, and network troubleshooting.
Ensure system designs and implementations meet all government security requirements.
Develop and enhance security documentation for new and existing systems.
Support wired and wireless network analysis and optimization.
Conduct vendor comparisons, cost studies, and system scalability assessments.
Deliver independent evaluations of complex network ecosystems and recommend enhancements.
Identify and brief system weaknesses with clear, actionable recommendations.