CareerPlan

Information Systems Security Engineer (ISSE)

Arlington, Virginia, United StatesFull-time2026-11-04 → 2026-11-09
Based in United StatesSecurity clearance required

Core

Senior ISSE responsible for end-to-end security engineering, architecture, and RMF compliance for classified national security systems and satellite networks.

Role type

Senior individual-contributor security engineer (classified systems)

Builds

Secure classified networks, enclaves, and systems for national security missions

Domain

National security, classified systems, satellite communications

Required skills

Risk Management Framework (RMF), system security architecture, vulnerability management, cryptography, secure configuration, automation, threat modeling, incident response, cloud security, identity management, logging analysis, scripting (Python, Bash, PowerShell), mentorship

Preferred skills

Technical leadership, zero trust, cross-domain solutions, platform hardening, detection engineering, software security, metrics development, AWS security, infrastructure as code

Technologies

Python, Bash, PowerShell, AWS, Java, Scala, C/C++, Go

Responsibilities

Own end-to-end security engineering for multiple concurrent classified systems; Lead system security architecture and design reviews; Drive RMF activities through authorization and continuous monitoring; Develop and maintain high-quality authorization evidence; Partner with system owners and assessors to resolve findings; Engineer and validate secure configurations; Lead technical investigations of vulnerabilities and incidents; Build automation and dashboards to reduce manual effort; Make and document security trade-offs; Mentor engineers and security practitioners

Seniority

Senior, hands-on IC with technical leadership