Job Description Insight Global is seeking a Sr ISSO to support a large government customer. This person will work with a team of other cybersecurity personnel to support ASR, ATO, and cyber compliance activities. Responsibilities will include: Test and apply security controls based on security categorization, the application of overlays (privacy, classified, intel, etc.) and security control tailoring (AI, NOFORN, etc.). Conduct active and passive reconnaissance of data, with the ability to assess and author Plans of Milestones and Actions (POA&Ms) containing accurate and verifiable mitigation statements, milestone tracking, and applying to the most relevant security control. Development of comprehensive required A&A documentation, including System Security Plan (SSP), Security Assessment Plan (SAP), Security Assessment Reports (SARs), etc. Adherence to the eMASS scheduled tasking within the accreditation cycle, including Quarterly Independent Verification and Validation (IV&V), quarterly STIG checks, Annual Security Review (ASR), monthly POA&M updates, and resubmission for ATO, ATC, IATC and IATT as applicable. Maintenance of DISA circuit connections (CCSDs), inheritance from accredited systems and cloud service providers, and the workflow schedule on accreditations. We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/. Skills and Requirements Active TS with SCI eligibility Active IAT III 10+ Years of Experience working with all steps of the RMF process, ATO renewal, POAM creation and Maintenance Experience with ACAS scan review Stakeholder Briefing experience