Senior ISSE: A&A & RMF Specialist (TS/SCI w/ Poly)
i270 Solutions Group LLC
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Job summary
i270 Solutions Group LLC is seeking a Senior Cybersecurity Systems Engineer (ISSE) with active TS/SCI and Full Scope Poly to support Assessment & Authorization across a high-profile government customer. You will bridge developers, security assessors, and leadership, driving accreditation activities from ATD to IATT and ATO with audit-ready documentation.
You will manage multiple A&A efforts, maintain SSPs and CONOPS, coordinate with ISSOs and SCA teams, and translate complex implementations into
Qualifications
- 11+ years of relevant cybersecurity systems engineering experience.
- Active Top Secret/SCI clearance with Full Scope Polygraph (FS Poly) required.
- Bachelor's or Master's Degree preferred in Cybersecurity, Information Technology, Engineering, or related discipline; degree requirement may be waived for direct ISSE support to this customer’s agency.
Responsibilities
- Embed across a Division-level portfolio of A&A projects spanning multiple branches.
- Serve as the connective tissue between developers, security assessors, and senior leadership.
- Translate complex technical implementations into audit-ready security documentation.
- Drive accreditation activities from ATD through IATT to full ATO.
Skills
Education
Job description
i270 Solutions Group LLC is seeking a Senior Cybersecurity Systems Engineer (ISSE) with active TS/SCI and Full Scope Poly to support Assessment & Authorization across a high-profile government customer. You will bridge developers, security assessors, and leadership, driving accreditation activities from ATD to IATT and ATO with audit-ready documentation.
You will manage multiple A&A efforts, maintain SSPs and CONOPS, coordinate with ISSOs and SCA teams, and translate complex implementations into
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