{"id":672466,"url":"https://alion.io/job/redhorsecorp-principal-information-system-security-engineer-isse","title":"Principal Information System Security Engineer (ISSE)","company":{"id":684975,"name":"Redhorse","domain":"redhorsecorp.com","url":"https://alion.io/company/redhorsecorp","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":77,"open_postings":16,"ghost_share":0,"stale_share":0.938,"repost_share":0,"time_to_fill_p50_days":41,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Security","role_family":"Security","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chantilly, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":160000,"max":185000,"currency":"USD","period":"year","gross":null,"usd_annual":185000},"salary_estimate":null,"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Databricks","optional":false},{"name":"GCP","optional":false},{"name":"GitLab","optional":false},{"name":"Jira","optional":false}],"status":"live","first_seen_at":"2026-08-10T20:26:52Z","employer_posted_date":"2026-08-10","last_verified_at":"2026-11-02T15:14:35Z","board_verified":true,"closed_at":null,"days_open":83,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":83},"description":"About the Role\nRedhorse transforms the way government uses data and technology. To support this mission, we are seeking a Principal Information System Security Engineer (ISSE) who is a recognized authority in the field. This is a high-impact role where you will tackle unusually complex technical problems and deliver highly innovative solutions. As a recognized expert, you will not only ensure the security of our nation's most sensitive information systems but also lead efforts to capture new business opportunities through technical excellence and capability briefings. You will be instrumental in designing and researching advanced applications that shape the future of Redhorse’s digital transformation services.\nKey Responsibilities\nAct as a recognized authority within the company, providing technical and programmatic Information Assurance (IA) services for complex network and information security systems.\nWork on unusually complex technical problems, providing highly innovative solutions that align with mission goals.\nLead efforts to capture new business through high-level technical work, research, and capability briefings to prospective clients.\nDesign, research, and develop highly advanced applications that may result in new product or business opportunities for Redhorse.\nDetermine and pursue courses of action necessary to obtain desired security and business results with minimal supervision.\nDesign, develop, and implement security requirements within an organization’s business processes.\nPrepare documentation using accepted guidelines such as DITSCAP, DIACAP, NIACAP, NIST SP 800-37, and DCID 6/3 frameworks.\nPrepare and execute Security Test and Evaluation (ST&E) plans.\nProvide certification and accreditation (C&A) support and conduct complex risk and vulnerability assessments.\nAnalyze policies and procedures against Federal laws and regulations, providing recommendations to close critical security gaps.\nDevelop and complete system security plans, contingency plans, and risk mitigation strategies.\nRecommend and implement system enhancements to improve security deficiencies.\nDevelop, test, and integrate computer and network security tools.\nSecure system configurations, install security tools, and scan systems to determine and report compliance results.\nConduct security program audits and develop solutions to lessen identified risks.\nDevelop strategies to comply with privacy, risk management, and e-authentication requirements.\nProvide IA support for the development and implementation of security architectures to meet evolving security requirements.\nProvide expert assistance in computer incident investigations and vulnerability assessments.\nRequired Experience/Clearance\nMust have an active TS/SCI with FS Poly security clearance.\nBachelor’s degree (or equivalent)with 12+ years of experience OR a Master’s degree with 10+ years of experience.\nRecognized expertise in performing a wide variety of information assurance and information systems security engineering duties.\nExtensive experience in the certification and accreditation of information systems using DIACAP, NIACAP, NIST SP 800-37, and/or DCID 6/3 frameworks.\nProven track record of solving unusually complex technical problems with innovative solutions.\nDemonstrated ability to lead technical briefings and support business development/capture efforts.\nDesired Experience\nWe encourage all candidates who meet the basic requirements to apply, even if you do not have any of the following experience:\nAdvanced security certifications such as CISSP-ISSEP or CISM.\nExperience with Cloud Service Provider (CSP) security architectures (AWS, Azure, or Google Cloud).\nFamiliarity with DataBricks, GitLab, Spark, or Jira in a secure government environment.\nExperience with automated compliance-as-code and DevSecOps practices.\nPrevious experience in a consulting or advisory role for high-level government stakeholders.","description_format":"text","description_chars":3918,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","IT Consulting & Digital Transformation","Defense AI","Analytics & BI 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