Information Systems Security Engineer - Active TS/SCI with CI Poly
Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Aug 12, 2026. ENS Solutions scores C on the Alion truth index.
Transform technology into opportunity as a Cybersecurity Systems Engineer/Information Systems Security Engineer (ISSE). A career in enterprise IT means connecting and enhancing the systems that matter most. You'll be at the forefront of innovation and play a meaningful part in improving how agencies operate. As a Cybersecurity Systems Engineer/Information Systems Security Engineer (ISSE) you will help ensure today is safe and tomorrow is smarter.
HOW A CYBERSECURITY SYSTEMS ENGINEER/INFORMATION SYSTEMS SECURITY ENGINEER (ISSE) WILL MAKE AN IMPACT:
⦁ Lead Accreditation and Authorization (A&A) reviews by Group level ISSMs and Security Controls Assessors (SCA).
⦁ Documents the various security control implementations as well as gather the artifacts that support the Risk Management Framework (RMF) and ICD 503 Security Accreditation for the various Assessment and Authorization (A&A) efforts.
⦁ Document and obtain a general understanding of the architecture being developed or that was developed for each project in order to write the Systems Security Plans (SSP) / CONOPS.
⦁ Gather the information by working with various systems owners, project managers, and engineering team members in order to write various additional A&A related documents such as Contingency Plan (CP), General User Guide (GUG), Privileged User Guide (PUG), Standard Operating Procedures (SOP' s), etc.
⦁ Document the Plans of Actions and Milestones (POA&Ms) implementation responses or mitigations, as well as provide all required artifacts (i.e evidence gathering from the system owners, PMs, and engineering teams).
⦁ Coordinating with various contractor and customer personnel to obtain the A&A content, as well as working with various customer security organizations to navigate the customer's A&A process in order to achieve Authority to Develop (A TD), Interim Authority to Test (IA TT), and Authority to Operate (ATO) for each of the primary and secondary assigned systems.
⦁ Monitor each of the various A&A projects within the customer's A&A process and be able to fluently discuss the status at all levels.
⦁ Support audit liaison activities, and compliance oversight activities to strengthen the security program and promote compliance with the Risk Management Framework (RMF).
⦁ Perform technical content reviews and edits as part of the document updates as part of the Annual ISCM and OA Strategy Plan Update.
⦁ Conduct a technical review and update of the control volatility section of the plan considering emerging threats, changes to the agency security posture, the latest IC guidance, DIA policy, federal laws, standards, and guidance, et., and based on information profile (e.g., High Value Asset (HY A), TS (SCI), Secret, etc.).
⦁ Provide audit liaison support for internal and external audits and data calls for external reporting. Document and provide concise and actionable recommendations and process improvements reports.
Requirements
- Required Education and Experience: Technical Training, Certification(s) or Degree + 10 years
- Certifications: DoD Manual 8570.01-M at the Information Assurance System Architects & Engineer (IASAE) Level II role
- Security Clearance Level: TS/SCI clearance and ability to obtain and maintain a CI Polygraph
- Location: On Customer Site
Benefits
Essential Network Security (ENS) Solutions, LLC is a service-disabled veteran owned, highly regarded IT consulting and management firm. ENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Our strong technical and management experts have been able to maintain a standard of excellence in their relationships while delivering innovative, scalable and collaborative infrastructure to our clients.
Why ENS?
- Free Platinum-Level Medical/Dental/Vision coverage, 100% paid for by ENS
- 401k Contribution from Day 1
- PTO + 11 Paid Federal Holidays
- Long & Short Term Disability Insurance
- Group Term Life Insurance
- Tuition, Certification & Professional Development Assistance
- Workers’ Compensation
- Relocation Assistance
- Essential Network Security (ENS) Solutions, LLC is a service-disabled veteran owned, highly regarded IT consulting and management firm. ENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Our strong technical and management experts have been able to maintain a standard of excellence in their relationships while delivering innovative, scalable and collaborative infrastructure to our clients.
- Why ENS?
- Free Platinum-Level Medical/Dental/Vision coverage, 100% paid for by ENS
- 401k Contribution from Day 1
- PTO + 11 Paid Federal Holidays
- Long & Short Term Disability Insurance
- Group Term Life Insurance
- Tuition, Certification & Professional Development Assistance
- Workers’ Compensation
- Relocation Assistance
- Candidate AI Usage Policy
- AI tools are an important part of daily work at ENS Solutions, and we are committed to their responsible and ethical use. To ensure a fair and equitable candidate evaluation based on individual skills, knowledge, and experience, candidates are not permitted to use artificial intelligence or other assistive tools during interviews, whether in person or virtual, unless explicit permission has been granted in advance.