{"id":4272317,"url":"https://alion.io/job/mantech-cross-domain-solution-engineer","title":"Cross-Domain Solution Engineer","company":{"id":179527,"name":"ManTech","domain":"mantech.com","url":"https://alion.io/company/mantech","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Avature","truth_index":{"grade":"A","score":100,"open_postings":68,"ghost_share":0,"stale_share":0,"repost_share":0.015,"time_to_fill_p50_days":16,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Solutions","role_family":"Solutions","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Stafford, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":128000,"max":214400,"currency":"USD","period":"year","gross":null,"usd_annual":214400},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-13T18:08:52Z","employer_posted_date":"2026-11-13","last_verified_at":"2026-11-13T18:08:52Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now-protect and innovate with MANTECH!\nMANTECH seeks a motivated, career and customer-oriented Cross-Domain Solution Engineer to help support our current USMC contract out of Stafford, VA.\nThe Tactical Cross-Domain Solution Cyber Engineer serves as the primary security and technical implementation lead or principal technical security and boundary defense lead for cross-domain systems and transfer capabilities. This role ensures security-boundary crossings and data transfers comply with National Security Agency (NSA) Raise the Bar standards, National Cross Domain Strategy and Management Office (NCDSMO) validator expectations, service-level cross-domain offices, federal high-assurance standards, and enterprise cybersecurity directives.\nResponsibilities include but are not limited to:\nLead, architect, and design multi-enclave security boundaries, determining allowable traffic flows, deep content inspection requirements, boundary isolation controls, sanitization requirements, and security-boundary alignment relative to supported platforms and programs.\nNavigate and guide cross-domain solutions through NSA Raise the Bar and NCDSMO validation pathways, as well as formal government security validation pathways, identifying accreditation constraints, preparing technical compliance evidence, and executing required technical validation sequences.\nDirectly configure, deploy, patch, install, harden, and sustain approved and high-assurance cross-domain technologies (e.g., enterprise guards, tactical/small-form-factor transfer devices, filter policies, inspection engines, boundary transfer appliances, and filter rule-set implementation/testing).\nCoordinate and liaise with accreditation, cybersecurity, testing, and sustainment stakeholders, security authorizing officials, and validation authorities, representing program equities to service cross-domain offices, NCDSMO, and enterprise forums.\nManage, design, and enforce network pathway security and boundary security controls (gateways, ports, protocols, services, boundary routing policies, port/protocol access rules, COMSEC, KMI controls, and cryptographic key management procedures).\nSupport development, author, and review comprehensive security authorization packages (e.g., cross-domain solution charters, RMF artifacts, test plans, and security assessment documentation).\nEnsure all integration and implementation efforts and boundary protection mechanisms align with operational timelines, deployed-force requirements, and denied, disrupted, intermittent, and limited communications constraints, remaining operable, resilient, and compliant in austere, disconnected, and contested tactical operating environments.\nMinimum Qualifications:\nBachelor’s degree and at least 5 years of related experience configuring, deploying, maintaining, and sustaining cross-domain solution technology (e.g., enterprise guards, tactical/small-form-factor transfer devices, high-assurance cross-domain appliances, transfer filters, inspection rule sets, and filter rule-set configuration/testing). An additional 2 years of experience may be substituted in lieu of degree.\nDeep and comprehensive technical understanding of NSA Raise the Bar standards, NCDSMO validation processes, federal high-assurance cross- domain security standards, risk management frameworks, or direct accreditation experience.\nMulti-enclave security architecture design experience, including data movement, data flow boundary protection, security sanitization, deep content sanitization, and system-boundary delineation.\nTechnical network security capabilities and expertise covering gateways, ports, protocols, services, network boundary defense, secure gateway administration, approved ports/protocols management, COMSEC, KMI implementations, and cryptographic communications security.\nProven experience architecting and securing automated, high-assurance data-sharing capabilities optimized for resilient operations in DDIL tactical operations and distributed environments.\nPreferred Qualifications:\nExperience supporting cross-domain solution validation pathways, service- level security validator programs, independent laboratory-based/site-based security assessments to achieve an ATO/IATT authorization/approval.\nExperience authoring or guiding a cross-domain solution ATO/IATT package through to approval.\nHands-on proficiency with commercial or government high-assurance cross-domain guard appliances and approved product baselines.\nProfessional cybersecurity certifications aligned with advanced information assurance technical/management levels (e.g., Certified Information Systems Security Professional).\nBackground as a cyberspace officer/engineer, network/data systems administrator, NSA security engineer, service-level cross-domain solution engineer, military, federal civilian, or Defense industry cybersecurity engineering, cyber operations, or secure network engineering.\nClearance Requirements:\nMust have a current/active TS/SCI security clearance. \nPhysical Requirements:\nOffice work environment with occasional travel to outdoor test and evaluation sites. \nMust be able to remain in a stationary position 50% of the time. \nNeeds to occasionally move about inside the office to access file cabinets, office machinery, meeting spaces, and collaborative work areas. \nThe projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.\nMANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.\nIf you need a reasonable accommodation to apply for a position with MANTECH, please email us at  and provide your name and contact information.","description_format":"text","description_chars":6900,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Life insurance","Wellness"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","Information Security","IT Consulting & Digital Transformation"],"lifecycle":[{"event":"open","at":"2026-11-13T18:08:52Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":16,"reasons":["conf:1","win:early","comp:brand"],"computed_at":"2026-11-13T19:28:21Z"},"pay":{"stated_usd_annual":214400,"is_top_pay":true},"html_url":"https://alion.io/job/mantech-cross-domain-solution-engineer","json_url":"https://alion.io/job/mantech-cross-domain-solution-engineer.json","meta":{"generated_at":"2026-11-13T19:28:21Z","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":38866,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":179527},"rest":"https://alion.io/mcp/rest/get_company?id=179527"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmantech-cross-domain-solution-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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%2Fmantech-cross-domain-solution-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fmantech-cross-domain-solution-engineer"},{"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/mantech-cross-domain-solution-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmantech-cross-domain-solution-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4272317}},{"tool":"search_jobs","arguments":{"company":"mantech.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4272317},"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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