Senior Information System Security Engineer; ISSE

Senior Information System Security Engineer (ISSE)

Senior Information System Security Engineer (ISSE)

A solid understanding of security practices and policies, plus hands-on vulnerability testing experience. Prior experience with classified IC dissemination platforms, IC information sharing rules, and IC markings standards is expected.

You will join a high-performing team of Security Engineers supporting a large, significant program. The team focuses on improving system security architecture and strengthening cybersecurity capabilities across operational, test, integration, and development systems while solving complex, mission-critical issues.

This is a fast-paced, technically complex program supported by robust development, test, and production environments. The work involves systems with exacting interface, performance, and security requirements, including support for cross-domain capabilities and Security Verification Testing (SVT) of relevant Type 1 devices.

The program executes using Agile practices aligned to the Scaled Agile Framework (SAFe) and follows Dev Ops best practices. Security execution is driven by the Risk Management Framework (RMF), including management of multiple System Security Plans (SSPs) across development, test, and production systems. The role also operates within classified Intelligence Community (IC) environments and requires familiarity with IC information sharing rules and the Intelligence Community Markings System Register and Manual standards.

• Support the introduction of new capabilities into a complex system with stringent interface performance, and security requirements
• Enhance system security architecture and cybersecurity capabilities across multiple environments (operational, test, integration, and development)
• Manage RMF-aligned SSPs for development, test, and production systems
• Manage and support cross-domain capabilities
• Support SVT activities for relevant Type 1 devices
• Perform hands-on vulnerability testing and contribute to day-to-day security engineering efforts across a wide range of activities

• Define and validate security requirements and establish security architecture and designs for large-scale, geographically distributed systems and interfacing components within a complex network environment.
• Ensure end-to-end implementation alignment by working closely with Systems Engineering, Test Engineering, and Integration teams so hardware and software architecture and implementations meet security requirements.
• Design and implement security architectures and enterprise security solutions to ensure consistent application of security policy across the environment.
• Recommend and develop security standards and technical solutions aligned to current and target security architecture.
• Assess threats, risks, and operational security posture throughout the system lifecycle, including evaluating the impact of new development and recommending and implementing enhancements.
• Lead and contribute to security governance activities including security planning, assessment, risk analysis, risk management, certification support, awareness activities, security control assessment, and continuous monitoring and other IA program support functions.
• Evaluate, review, and test critical software and identify and remediate security issues across the system.
• Audit and assess security configurations using common methodologies and tools, and provide configuration management for security-relevant software and system components.
• Propose, coordinate, implement, and enforce information systems security policies, standards, and methodologies across distributed components.
• Serve as a security architecture SME
  , collaborating daily with internal technical experts and providing guidance to Program Managers, customer technical POCs, and internal teams on significant security issues.
• Enable secure development…