{"id":3342433,"url":"https://alion.io/job/leidos-c4a-systems-engineer-subject-matter-expert","title":"C4A Systems Engineer Subject Matter Expert","company":{"id":7791,"name":"Leidos","domain":"leidos.com","url":"https://alion.io/company/leidos","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":285,"ghost_share":0.004,"stale_share":0.867,"repost_share":0.014,"time_to_fill_p50_days":28,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":["Suffolk, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":73450,"max":132775,"currency":"USD","period":"year","gross":null,"usd_annual":132775},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Zero Trust","optional":false},{"name":"Linux","optional":true},{"name":"PKI","optional":true},{"name":"VMWare","optional":true},{"name":"Windows","optional":true}],"status":"live","first_seen_at":"2026-10-06T00:00:00Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-10-31T00:40:52Z","board_verified":true,"closed_at":null,"days_open":25,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":25},"description":"C4A Systems Engineer Subject Matter Expert\nSuffolk, VA\nMinimum of Secret clearance required\nThe Defense Sector at Leidos is currently looking for a C4A Systems Engineer Subject Matter Expert. The C4A Systems Engineer Subject Matter Expert provides expert-level leadership, engineering expertise, and operational support across the full spectrum of Command, Control, Communications, Computers, and Assurance (C4A) activities. This position supports Joint, Coalition, and mission-partner interoperability initiatives through the design, integration, testing, assessment, and sustainment of complex network and system architectures.\nThe successful candidate will lead engineering efforts supporting secure operational environments, ranging from DoD classified and unclassified networks to coalition secret-releasable architectures and RDT&E environments. This role combines systems engineering, network engineering, cybersecurity, interoperability testing, and project leadership to enable mission success in complex multi-domain operational environments.\nPrimary Responsibilities:\nC4A Engineering - Planning, preparation, research, coordination, and execution of Command, Control, Communications, Computers, and Assurance (C4A) and engineering-related tasks, delivering expert technical guidance and operational analysis.\nAnalytical Product Development - Develop and deliver comprehensive technical assessments, analytical reports, workflow visualizations, engineering recommendations, and executive-level briefings.\nSystems Testing & Validation - Plan, coordinate, and execute technical testing activities to validate network architectures, systems interoperability, security controls, and mission partner integration requirements.\nProject Execution & Reporting - Monitor engineering task execution and provide accurate status reporting to contract leadership and government stakeholders, ensuring project objectives, schedules, and deliverables are achieved.\nTechnical Training & Knowledge Transfer - Conduct internal training aligned to systems engineering, network engineering, cybersecurity, and interoperability subject matter expertise to enhance organizational readiness.\nSustainment & Operational Excellence - Support sustainment efforts to ensure consistent quality, efficiency, reliability, and productivity across all assigned engineering and operational tasks.\nOperational & Technical Analysis - Interview military, civilian, and contractor personnel to gather operational and technical requirements, assess mission impacts, identify capability gaps, and develop actionable recommendations.\nEnterprise Network Engineering - Apply expert knowledge of IT management, network engineering, systems engineering, IT administration, and assured C4 to design, implement, and maintain secure mission-critical environments.\nNetwork Lifecycle Management - Support activities across the full network lifecycle, including architecture design, implementation, configuration, monitoring, maintenance, security, documentation, performance optimization, and troubleshooting.\nCoalition & Interoperability Engineering - Support and execute joint and coalition interoperability initiatives across classified, unclassified, releasable, and mission-partner environments to ensure seamless information sharing and operational effectiveness.\nProject Engineering Leadership - Serve as Project Engineer responsible for developing project plans, coordinating engineering and implementation teams, resolving technical risks, managing schedules, and communicating project status to stakeholders.\nTechnical Test Development - Develop and execute technical test cases, test plans, and validation methodologies to assess system performance, interoperability, cybersecurity compliance, and operational suitability.\nZero Trust & Data-Centric Security Integration - Apply Zero Trust principles and Data-Centric Security (DCS) methodologies to modern network architectures and security designs, ensuring secure access, information protection, and mission assurance.\nEmerging Technology Evaluation - Research, assess, and recommend new technologies, tools, and engineering approaches that improve operational performance, security posture, and interoperability capabilities.\nDocumentation & Configuration Management - Develop and maintain engineering documentation, technical procedures, network diagrams, implementation plans, training materials, and system configuration baselines.\nBasic Qualifications:\nUS Citizen with an active Secret clearance.\nBachelor’s degree and 4+ years related experience or Master’s degree and 2+ years related experience. Additional experience may be considered in lieu of a degree.\nMinimum 4 years supporting military operational activities; minimum 4 years Targeting experience.\nC5ISRT (Command, Control, Communications, Computers, Cyber, Intelligence, Surveillance, Reconnaissance) and Targeting Experience.\nExperience developing target packages and target list with detailed intelligence, capabilities and vulnerabilities.\nExperience in supporting multi-domain mission planning and effects-based targeting.\nExperience with automated targeting tools (e.g. JTT, MIDB) and Service specific fire control systems. \nShall have a deep understanding of the F2T2EA Cycle and the data tools and techniques utilized for each phase of targeting. \nAnalyze the operational effectiveness of targeting systems in various scenarios and environments.\nEvaluate the impact of emerging technologies and trends on Targeting systems.\nWorking knowledge of U.S, NATO, and coalition partner targeting processes, procedures, and systems.\nApply analytical tools and methodologies to assess targeting system performance and identify areas for improvement.\nMust possess skills to communicate effectively and clearly in written reports and verbal presentations.\nMust possess skills to interview operational and technical military, civilian, and contractor to efficiently and accurately extract information.\nMust possess analytical skills to identify capabilities and limitations, assess operational impacts and provide focused, achievable recommendations.\nPreferred Qualifications:\nActive Top Secret with eligibility for CUI, NATO Secret, ACCMs, SCI and SAPs.\nTechnically focused with all-around System experience (Network Engineering preferred)\nExperience working in a multi-national cooperative environment\nExperience working in data centric security environments\nExperience with Identity Based Access Control\nClear understanding of the Zero Trust framework\nPKI Experience\nProtected Core Networking (PCN) experience\nExperience with a Virtual Environment (VMWare ESXi)\nExperience with Windows AND Linux Environments\nExperience in C2 and API\nSecurity+ Required (IAT 8570)\nCompTIA A+, Network+, MCSA, MCSE\nCisco Certs (CCNP, CCNA, CCIE)\nKnowledge of OSI Model, and where technologies exist within each layer\nKnowledge of Authentication mechanisms (ABAC, RBAC, SAML 2.0)\nDABAOPP1\nIf you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.\nOriginal Posting:\nOctober 6, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.\nPay Range:\nPay Range $73,450.00 - $132,775.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.","description_format":"text","description_chars":8033,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","C4ISR","Information Security","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-27T16:01:32Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 50 · green card filings: 24","filings_12m":50,"filings_prev_12m":58,"green_card_filings_12m":24,"median_offered_wage_usd":124257,"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)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":44,"band":"fade","label":"Fading","p_open":1,"p_active":0.585,"p_room":0.75,"age_days":25,"expected_fill_days":28,"reasons":["conf:5","stale_co","velocity","win:late","comp:brand"],"computed_at":"2026-10-31T05:58:55Z"},"pay":{"stated_usd_annual":132775,"is_top_pay":false},"html_url":"https://alion.io/job/leidos-c4a-systems-engineer-subject-matter-expert","json_url":"https://alion.io/job/leidos-c4a-systems-engineer-subject-matter-expert.json","meta":{"generated_at":"2026-10-31T07:34:18Z","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":11239,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-01T00:00:00Z"}},"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":7791},"rest":"https://alion.io/mcp/rest/get_company?id=7791"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fleidos-c4a-systems-engineer-subject-matter-expert"},{"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%2Fleidos-c4a-systems-engineer-subject-matter-expert"},{"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%2Fleidos-c4a-systems-engineer-subject-matter-expert"},{"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/leidos-c4a-systems-engineer-subject-matter-expert\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fleidos-c4a-systems-engineer-subject-matter-expert"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3342433}},{"tool":"search_jobs","arguments":{"company":"leidos.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3342433},"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. Docs: https://alion.io/developers"}}