Job Description
Our client is seeking a Senior ISSM to take full ownership of security authorisation for classified systems and networks. This is an exciting opportunity for a highly experienced, hands-on security professional to independently drive the full RMF/ATO lifecycle, with the potential to build and lead an ISSO team as the organisation grows.
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Must-Have Skills & Experience
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- Active TS/SCI clearance and US citizenship.
- 8+ years of information systems security experience, including ISSM or senior ISSO responsibilities supporting classified systems under DCSA/NISP.
- Hands-on RMF/ATO experience: Personally managed classified system authorisations from categorisation through ATO and continuous monitoring.
- Direct DCSA experience, including working with DCSA on classified system authorisations under DAAPM requirements.
- NIST SP 800-53, DAAPM and NISP: Practical experience implementing and validating security controls.
- ATO documentation: Personally developed SSPs, POA&Ms and supporting authorisation packages.
- Current DoD 8570/8140 IAM Level II or III certification, such as CISSP, CISM or CASP+.
- Bachelor's degree in Cybersecurity, Computer Science, Information Systems or a related discipline, or equivalent experience.
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Great Plus
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- SAP eligibility.
- Experience with SIPR, JWICS or other DoD transport networks.
- Experience authorising classified data centres, HPC or cloud environments.
- Familiarity with eMASS / NISP eMASS authorisation workflows.
- Experience establishing security programmes in startup or smaller-company environments.
- Experience building and leading ISSO teams.
- PMP or equivalent project management certification.
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