{"id":2985183,"url":"https://alion.io/job/castelion-senior-propulsion-ordnance-engineer","title":"Senior Propulsion & Ordnance Engineer","company":{"id":1795053,"name":"Castelion","domain":"castelion.com","url":"https://alion.io/company/castelion","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Aerospace","role_family":"Aerospace","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":["Rio de Janeiro, Brazil"],"countries":["BR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":112000,"max_usd":202000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":265},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ANSYS","optional":false},{"name":"MATLAB","optional":false}],"status":"live","first_seen_at":"2026-09-18T20:19:12Z","employer_posted_date":"2026-09-18","last_verified_at":"2026-10-29T08:33:53Z","board_verified":true,"closed_at":null,"days_open":40,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":40},"description":"Why Castelion, Why Now \nCastelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability. \nThis is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function. \nSenior Propulsion & Ordnance Engineer\nWe are seeking a Senior Propulsion & Ordnance Engineer to design and deliver ignition and energetic systems for Castelion's long-range hypersonic strike vehicles. This role is critical to enabling reliable motor ignition, flight termination, and stage separation through robust, high-performance energetic devices. You will work hands-on with multidisciplinary engineering teams to design, analyze, build, and validate ignitors, detonators, destruct charges, linear shaped charges, and related systems in a fast-paced, hardware-driven environment.\nResponsibilities\nDesign and develop energetic systems, including rocket motor ignitors, detonators, AFTS destruct charges, and linear shaped charges for stage separation\nLead the architecture and detailed design of ignition and ordnance hardware, including initiation chains, packaging, and integration with vehicle systems\nPerform thermal, structural, and energetic performance analyses to ensure reliable initiation, propagation, and output under extreme environmentsDevelop and optimize ignition systems for consistent, repeatable motor start across a range of operating conditions\n\nWork closely with propulsion, AFTS, structures, avionics, and safety teams to ensure seamless integration of ordnance systems with vehicle architecture\nSupport energetic material selection, handling, and processing in collaboration with materials and manufacturing teams\nPlan and execute ground test campaigns, including component-level and integrated system testing, and analyze results to drive design improvements\nConduct failure analysis and root cause investigations related to ignition performance, initiation reliability, or ordnance function\nEnsure compliance with safety, handling, and mission assurance requirements for energetic systems\nMentor junior engineers and contribute to best practices in propulsion and ordnance system design\nPartner closely with program leadership to make technical trades aligned with mission success\nBasic Qualifications\nBachelor's, Master's, or PhD in Aerospace Engineering, Mechanical Engineering, Materials Science, or related field\n5+ years of experience in propulsion, ignition systems, or ordnance/energetics design for aerospace or defense applications\nStrong background in rocket motor ignitors, detonators, initiation systems, and/or explosive devices such as shaped charges or destruct systems\nExperience with energetic materials, initiation chains, and safe handling practices\nFamiliarity with AFTS or flight termination systems and associated hardware\nExperience with ground testing of energetic systems, including instrumentation and data analysis\nProficiency in analysis and modeling tools (e.g., MATLAB, ANSYS, or equivalent)\nExperience with hardware build, integration, and troubleshooting in a lab or test environment\nStrong problem-solving mindset, thriving in a fast-paced, hardware-rich, high test cadence environment\nPreferred Skills and Experience\nPlease note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.\nCastelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details. \nOther Duties \nPlease note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice. \nAdditional Eligibility Requirements \nThis position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply. \nAffirmative Action/EEO Statement \nCastelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law. \nCastelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact . Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law. \nCastelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation. \nEAR/ITAR Requirements \nThis position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.","description_format":"text","description_chars":6340,"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":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Ammunition","Missiles","Defense Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-21T08:14:48Z"}],"visa":[],"liveness":{"score":48,"band":"ok","label":"Likely open","p_open":1,"p_active":0.808,"p_room":0.6,"age_days":40,"expected_fill_days":46,"reasons":["conf:1","velocity","win:late","crowd:brand"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/castelion-senior-propulsion-ordnance-engineer","json_url":"https://alion.io/job/castelion-senior-propulsion-ordnance-engineer.json","meta":{"generated_at":"2026-10-29T10:19:48Z","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":15627,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"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":1795053},"rest":"https://alion.io/mcp/rest/get_company?id=1795053"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcastelion-senior-propulsion-ordnance-engineer"},{"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%2Fcastelion-senior-propulsion-ordnance-engineer"},{"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%2Fcastelion-senior-propulsion-ordnance-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/castelion-senior-propulsion-ordnance-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcastelion-senior-propulsion-ordnance-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2985183}},{"tool":"search_jobs","arguments":{"company":"castelion.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2985183},"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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