Information Systems Security Engineer (ISSE)

Information Systems Security Engineer (ISSE)

The Information Systems Security Engineer (ISSE) will provide technical security expertise to support the design, development, integration, and assessment of secure computing and networking environments. The ISSE will ensure compliance with Information Assurance (IA) standards, identify vulnerabilities, and recommend mitigation strategies while supporting mission-critical government systems.

• Perform or review technical security assessments of computing environments to identify vulnerabilities, ensure IA compliance, and recommend mitigation strategies.
• Serve as a security engineering representative on engineering teams during the design, development, implementation, and integration of secure systems, architectures, and enclave environments.
• Act as the primary security engineering representative for projects involving secure networking, computing, and IA architectures.
• Apply knowledge of IA policy, procedures, and frameworks to support the development and integration of secure system solutions.
• Support the Government in enforcing trusted relationships across external systems and architectures.
• Provide security planning, assessment, risk analysis, and risk management for enterprise environments.
• Define and enforce security requirements for handling government data and systems with varying classification/protection levels.
• Recommend system-level solutions to resolve security requirements.
• Collaborate and interact directly with customers and project teams to ensure secure solutions meet mission and compliance needs.
• Contribute to the design of system or network architectures that span multiple enclaves with differing security requirements.
• Active CISSP certification (required).
• Demonstrated experience performing IA/security engineering in support of secure system design, development, and integration.
• Strong knowledge of IA standards, STIGs, RMF, and government security requirements.
• Excellent communication skills and ability to interact with customers and technical teams.

Compensation & Benefits - We offer a highly competitive salary along with a full benefits package, including paid time off, health/dental/vision coverage, retirement savings plans, employer paid life and disability, training and tuition reimbursement and more. This position is eligible for our year end discretionary bonus plan, as well as recognition awards. The competitive salary range* is $150,000 to $240,000 (annualized USD).

* Salary ranges are intended as a guideline, not a guarantee of pay. Final compensation is determined after a thorough review of multiple factors such as job level, responsibilities, geographic location, relevant work experience, educational background, certifications, contract-specific considerations, organizational needs, and alignment with current market conditions. Please note that these ranges may be adjusted over time and should be viewed as estimates rather than fixed amounts.

Prophasys, LLC provides equal employment opportunities (EEO) to all qualified applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetic information, military or veteran status or any other status protected by law. Prophasys is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice (6/27/2023 version) from the Department of Labor. Prophasys participates in E-Verify and will provide the federal government with I-9 information to confirm that all new hires are authorized to work in the U.S. To learn more about E-Verify please visit

Security Clearance - Applicants must hold an active TS/SCI with Polygraph.

Education/Experience Requirements - Bachelor's degree in Computer Science, Computer Engineering, or a closely related field is required. Positions that may be available range from mid-level (7-14 years) to senior level (20+ years).