{"id":1148805,"url":"https://alion.io/job/sigma-defense-1767-senior-information-systems-security-engineer-isse","title":"1767 - Senior Information Systems Security Engineer (ISSE)","company":{"id":685779,"name":"Sigma Defense","domain":"sigmadefense.com","url":"https://alion.io/company/sigmadefense","size_band":null,"is_staffing_agency":false,"is_intermediary":false,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":25,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":20,"computed_at":"2026-09-23T05:45:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"hiring_geo_confidence":"structured","locations":["Rome, Italy"],"countries":["IT"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":125000,"max":155000,"currency":"USD","period":"year","gross":null,"usd_annual":155000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"Microsoft Defender","optional":false},{"name":"Microsoft Defender for Cloud","optional":false},{"name":"Zero Trust","optional":false}],"status":"live","first_seen_at":"2026-09-23T16:46:16Z","employer_posted_date":"2026-09-23","last_verified_at":"2026-09-24T02:56:22Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Sigma Defense is seeking a Senior Information Systems Security Engineer (ISSE) to join our team in Rome, NY.\nEqual Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nRequirements\n8+ years of experience in information systems security engineering, cybersecurity engineering, or a closely related technical discipline.\nStrong hands-on experience with ACAS, including vulnerability scanning, results analysis, remediation tracking, and validation.\nDemonstrated experience implementing cybersecurity requirements under the DoD Risk Management Framework (RMF).\nStrong understanding of Zero Trust architecture and security principles and their application within RMF environments.\nHands-on experience with Microsoft Azure security technologies and cloud security architecture.\nExperience developing and administering Azure Policy for security, governance, and compliance enforcement.\nExperience with Microsoft Defender for Cloud, including security posture management, recommendations, regulatory compliance, and workload protection.\nExperience with Xacta, with an emphasis on automation, RMF workflow improvement, evidence management, or continuous authorization.\nExperience with infrastructure automation and Infrastructure as Code (IaC) concepts and technologies.\nAbility to translate cybersecurity requirements and security controls into technical configurations and automated enforcement mechanisms.\nStrong understanding of vulnerability management, system hardening, security-control implementation, and continuous monitoring.\nMust be a U.S. citizen.\nMandatory Certifications:\n Required:\nCompTIA Security+\nCertified Information Systems Security Professional (CISSP)\nACAS Operator and Supervisor Course\nDesired:\nMicrosoft AZ104\nMicrosoft AZ500\nComputer Programs/Software:\nACAS\nDefender for Cloud\nXacta\nPersonnel Clearance Level:\nCandidate must possess or have the ability to obtain an active TS/SCI security clearance or higher.\nClearance may be sponsored for the right candidate.\nEducation Requirements:\nBachelor's degree from an accredited college or university in a Cybersecurity or related field of study. \nEssential Job Duties (not all-inclusive):\nServe as a senior cybersecurity engineering resource supporting the implementation and maintenance of security controls throughout the system lifecycle.\nApply RMF principles within Zero Trust architectures, translating security and compliance requirements into practical technical controls.\nPerform and support vulnerability assessment and continuous monitoring activities using Assured Compliance Assessment Solution (ACAS).\nAnalyze ACAS scan results, identify vulnerabilities, configuration deficiencies, and work with engineering teams to develop and validate remediation strategies.\nDesign, implement, and maintain security controls within Microsoft Azure environments.\nDevelop and manage Microsoft Azure Policy initiatives, assignments, exemptions, and compliance controls to enforce security requirements at scale.\nUtilize Microsoft Defender for Cloud to assess security posture, identify vulnerabilities and misconfigurations, monitor compliance, and improve cloud workload protection.\nSupport the implementation of Zero Trust security principles, including identity, device, network, application, workload, and data security controls.\nDevelop and maintain Xacta automation capabilities to improve RMF documentation, evidence collection, control validation, and continuous authorization processes.\nAutomate security and compliance processes through Infrastructure as Code (IaC) and other infrastructure automation technologies.\nIntegrate security requirements and compliance validation into automated deployment and configuration-management workflows.\nDevelop repeatable methods for collecting security-control evidence and reducing manual RMF and assessment activities.\nCollaborate with system architects, cloud engineers, DevSecOps teams, system administrators, ISSOs, and other cybersecurity personnel.\nProvide technical guidance on system security architecture, control implementation, vulnerability remediation, and cybersecurity risk.\nSupport security assessments, authorization activities, continuous monitoring, and ongoing maintenance of the system's security posture.\nSalary Range: $125,000 - $155,000 annually.\nBenefits\n Dental and Vision Insurance\n Medical Insurance to Include HSA, FSA, and DFSA Plans\n Life and AD&D coverage\n Employee Assistance Program (EAP)\n 401(k) Plan with Company Matching Contributions\n 160 Hours of Paid Time Off (PTO) \n 12 (Floating) Holidays\n Educational Assistance\n Highly Competitive Salary","description_format":"text","description_chars":4897,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military","DevOps","Information Security","DevSecOps"],"lifecycle":[{"event":"open","at":"2026-09-23T16:46:16Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":20,"reasons":["conf:2","win:early"],"computed_at":"2026-09-24T05:04:40Z"},"pay":{"stated_usd_annual":155000,"is_top_pay":false},"html_url":"https://alion.io/job/sigma-defense-1767-senior-information-systems-security-engineer-isse","json_url":"https://alion.io/job/sigma-defense-1767-senior-information-systems-security-engineer-isse.json","meta":{"generated_at":"2026-09-24T05:04:40Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}