{"id":3663415,"url":"https://alion.io/job/amentum-senior-information-systems-security-engineer-isse","title":"Senior Information Systems Security Engineer (ISSE)","company":{"id":14861,"name":"Amentum","domain":"amentum.com","url":"https://alion.io/company/amentum","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":81,"open_postings":455,"ghost_share":0,"stale_share":0.954,"repost_share":0,"time_to_fill_p50_days":16,"computed_at":"2026-11-06T05:58:05Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Fort Meade, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Ansible","optional":false},{"name":"Defense in Depth","optional":false},{"name":"Linux","optional":false},{"name":"Nessus","optional":false},{"name":"PKI","optional":false},{"name":"PowerShell","optional":false},{"name":"Python","optional":false},{"name":"SIEM","optional":false},{"name":"Splunk","optional":false},{"name":"Threat Modeling","optional":false},{"name":"Windows","optional":false},{"name":"Zero Trust","optional":false}],"status":"live","first_seen_at":"2026-11-02T00:00:00Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-06T12:39:29Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Purpose and Impact:\nAre you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a Senior Information Systems Security Engineer (ISSE) to join our team of passionate individuals at Fort Meade, MD. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation’s security and intelligence mission.\nIn support of DISA, Amentum’s Intel and Cyber Division is expanding a proven team of highly skilled engineers and architects to support a program that provides critical IT capabilities to the Department of Defense. This team is committed to engineering, assembling, integrating, deploying, and sustaining an innovative IT enterprise solution.\nOur team delivers secure, mission-critical capabilities where system integrity and rapid deployment are paramount. We are seeking a Senior Information Systems Security Engineer (ISSE) who combines meticulous technical discipline with strategic foresight. In this role, you will lead efforts to establish and maintain robust baselines in a rapidly evolving operational environment. Success requires the ability to navigate complex, unique technical challenges independently while fostering collaborative solutions across integrated teams. To excel, you must possess a proactive learning mindset and the agility to rapidly master and govern the integration of next-generation systems and services.\nWork Schedule: 8 Hours per day, Monday thru Friday\nEssential Responsibilities:\nThe duties and responsibilities of the Senior Information Systems Security Engineer (ISSE) include but are not limited to the following:\nThe Senior ISSE leads the design, integration, and assessment of security architectures for information systems that process, store, and transmit classified and sensitive intelligence information. The incumbent applies systems security engineering principles throughout the full system lifecycle, ensures compliance with Intelligence Community (IC) and national security policy, and advises program leadership and Authorizing Officials (AOs) on risk. This is a senior technical role with significant independence, mentoring responsibility, and influence over enterprise security decisions.\nKey Responsibilities:\nDevelop and review security architectures, designs, and requirements for classified enclaves, cross-domain solutions, cloud environments, and mission applications. \nIntegrate security controls into the system development lifecycle, including DevSecOps pipelines, so that security is built in rather than bolted on. \nEvaluate emerging technologies (zero trust, cloud services, AI/ML tools, containerization) for security implications and recommend risk-informed adoption strategies. \nDefine and validate security requirements traceable to mission needs, threat models, and applicable controls. \nLead system categorization, control selection and tailoring, implementation, assessment, and continuous monitoring under the Risk Management Framework (RMF) as implemented by the IC. \nPrepare and maintain authorization packages, including System Security Plans, Security Assessment Reports, Plans of Action and Milestones (POA&Ms), and risk assessments. \nBrief Information System Security Managers (ISSMs), Authorizing Officials, and program leadership on residual risk and recommended mitigations. \nSupport reciprocity and inheritance of controls across IC elements and accrediting bodies. \nAnalyze vulnerability scan results, configuration baselines (STIGs/SCAPs), and penetration test findings, and drive remediation with system owners and engineering teams. \nSupport incident response, including technical analysis, root-cause determination, and lessons-learned integration into system designs. \nReview change requests and configuration changes for security impact. \nSupport audits, inspections, and security reviews by oversight bodies. \nInterpret and apply IC and national policy, including ICD 503, ICD 705 and its technical specifications, CNSSI 1253, NIST SP 800-37/53/53A, and applicable agency directives. \nParticipate in configuration control boards, architecture review boards, and security working groups. \nCoordinate with counterintelligence, physical security, supply chain risk management, and cross-domain teams. \nMentor junior and mid-level ISSEs and security analysts. \nServe as a technical authority and escalation point for complex or ambiguous security issues. \nAbility to translate complex technical risk into clear, actionable guidance for non-technical decision makers. \nStrong written and oral communication skills, including producing high-quality technical documentation. \nSound judgment and the ability to balance mission needs against security requirements\nContribute to the development of standards, templates, and best practices. \nWork Environment, Physical Demands, and Mental Demands:\nEmployee will work in a SCIF on a daily basis.\nEmployee may also be required to work in a datacenter environment for specified periods of time.\nMinimum Requirements (Knowledge, Skills, and Abilities):\nExperience supporting classified networks, cross-domain solutions, or multi-enclave environments. \nExperience with cross-domain solutions, classified cloud environments (e.g., C2E/commercial cloud for IC), or zero trust implementation. \nFamiliarity with automation and scripting (Python, PowerShell, Ansible) and infrastructure-as-code security. \nExperience with SIEM, vulnerability management, and continuous monitoring tooling (e.g., ACAS/Nessus, Splunk, eMASS or agency equivalent). \nExpert knowledge of information systems security principles, defense-in-depth, and threat modeling. \nFamiliarity with ACAS, STIG Viewer, SCAP, and Assured Compliance tools. \nExperience supporting ATO packages for cloud environments (e.g., C2S/commercial cloud for classified workloads). \nFamiliarity with IC-specific tools and processes for reciprocity and enterprise authorization. \nExperience briefing AOs, program managers, and senior leadership. \nStrong understanding of security control families and how to interpret implementation, inheritance, and assessment procedures. \nAbility to translate technical findings into clear risk statements. \nExcellent written communication, with a strong attention to detail in documentation. \nAbility to manage multiple packages and competing deadlines. \nSound judgment when handling classified and sensitive information. \nAbility to work independently and within cross-functional teams. \nHands-on experience managing system records, controls, artifacts, and POA&Ms in eMASS. \nWorking knowledge of the RMF, NIST SP 800-37, 800-53, and 800-53A, CNSSI 1253, and ICD 503.\nThorough knowledge of IC and national security information system policy, including CNSS issuances and agency directives. \nSkill in assessing risk and applying technical, operational, and management controls. \nAbility to translate policy into practical implementation guidance for system administrators. \nAbility to work independently, manage multiple systems and deadlines, and exercise sound judgment in handling classified information. \nSecurity Clearance Required:\nMust have active Top Secret clearance with SCI eligibility\nMinimum Education:\nBachelor's degree in cybersecurity, computer science, engineering, or a related field, plus [8-12] years of relevant experience (additional experience may substitute for education). Additional experience may substitute for a degree or equivalent professional experience (typically 4 additional years in lieu of degree). \nMinimum Years of Experience:\nAt least [5] years of experience performing ISSE or equivalent security engineering duties in classified or IC environments. \nDemonstrated experience executing the RMF and producing authorization artifacts for national security systems. \nWorking knowledge of network security, operating system hardening (Windows/Linux), identity and access management, encryption/PKI, and auditing/logging. \nRequired Certification: (One or more of the following)\nCertified Information Systems Security Professional (CISSP)\nCertified Information Security Manager (CISM)\nCompTIA Advanced Security Practitioner (CASP+)\nPreferred Qualifications:\nCertified Information Systems Security Professional (CISSP) Information System Security Engineering Professional (ISSEP)\nCertified Information Security Manager (CISM)\nCertified Information System Auditor (CISA)\nAs part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment. Employment is contingent upon successful completion of the drug screening process. Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.\nOther Responsibilities:\nSafety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.\nQuality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each\nemployee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.\nProcedure Compliance - Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.\nCompensation Details:\n$190,000 - $225,000The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.\nBenefits Overview:\nOur health and welfare benefits are designed to support you and your priorities. Offerings include:\nHealth, dental, and vision insurance\n\nPaid time off and holidays\n\nRetirement benefits (including 401(k) matching)\n\nEducational reimbursement\n\nParental leave\n\nEmployee stock purchase plan\n\nTax-saving options\n\nDisability and life insurance\n\nPet insurance\n\nNote: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.\nOriginal Posting:\n11/02/2026 - Until FilledAmentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.\nAmentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic...","description_format":"text","description_chars":12415,"description_truncated":true,"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":["Equity","Life insurance","Parental leave","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military Logistics","Facilities Management","Business Process Outsourcing (BPO)","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-11-03T04:26:09Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 2","filings_12m":2,"filings_prev_12m":3,"green_card_filings_12m":0,"median_offered_wage_usd":122500,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":4,"expected_fill_days":16,"reasons":["conf:2","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/amentum-senior-information-systems-security-engineer-isse","json_url":"https://alion.io/job/amentum-senior-information-systems-security-engineer-isse.json","meta":{"generated_at":"2026-11-06T15:44:06Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":29370,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":14861},"rest":"https://alion.io/mcp/rest/get_company?id=14861"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Famentum-senior-information-systems-security-engineer-isse"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Famentum-senior-information-systems-security-engineer-isse"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Famentum-senior-information-systems-security-engineer-isse"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/amentum-senior-information-systems-security-engineer-isse\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Famentum-senior-information-systems-security-engineer-isse"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3663415}},{"tool":"search_jobs","arguments":{"company":"amentum.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3663415},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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