{"id":3227567,"url":"https://alion.io/job/firefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team","title":"Propulsion Engineer II (Spacecraft Engine Team)","company":{"id":63753,"name":"Firefly Aerospace","domain":"fireflyspace.com","url":"https://alion.io/company/firefly-aerospace-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":null},"role":"Aerospace","role_family":"Aerospace","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Cedar Park, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":71000,"max_usd":139000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":162},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GD&T","optional":false},{"name":"Siemens NX","optional":false}],"status":"live","first_seen_at":"2026-10-22T00:00:00Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-11-01T17:35:50Z","board_verified":true,"closed_at":null,"days_open":11,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":11},"description":"ABOUT FIREFLY AEROSPACE\nFirefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space - anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.\nAbout the Role\nThe position of Propulsion Engineer II within the Spectre Engine team at Firefly involves leveraging creativity, ingenuity, and experience to develop hypergol engines for our Blue Ghost program. Engineers tackle complex challenges throughout the project life cycle, from design and analysis to manufacturing, testing, and operational support. Collaborating closely with other product groups, such as structures, fluid systems, and avionics, Propulsion Engineers take ownership of projects and make critical decisions. Successful candidates will demonstrate a passion for solving challenging problems, the ability to synthesize information, and a determination to create leading-edge propulsion systems in a dynamic, fast-paced environment.\n\nResponsibilities\nServe as Responsible Engineer for in-space propulsion hardware including main and attitude control engines, valves, and propellant tanks.\nDevelop new and innovative design concepts for propulsion integration and operations that reduce complexity and maximize reliability within budget\nAssist in the development of manufacturing, integration, and test processes, including work instructions, test procedures, development testing, and initial build support\nAct as the primary point of contact for design, analysis, and operations of spacecraft fluid systems\nPerform flight operations as a primary operator for fluids and propulsion systems\nOwn and execute development, qualification, and acceptance testing of flight hardware\nExecute design for manufacturability changes to enhance production efficiency and vehicle reliability\nIdentify system risks and conduct corresponding trade studies to ensure successful vehicle operation\nDrive development of automation and test data analysis tools\n\nQualifications\nRequired\nBS in Aerospace Engineering or related engineering discipline.\n3+ years of experience working on an aerospace engine or fluid system\nStrong engineering fundamentals in fluids, thermodynamics, and mechanics\nExperience in Siemens NX or equivalent CAD program\nComprehension of design fundamentals including tolerancing, ASME Standards, ASTM, and GD&T\nAbility to effectively work in a multi-discipline team and provide technical guidance and insight.\nDesired Qualifications\nMaster’s Degree in Mechanical, Aerospace, or related engineering discipline.\n5+ years of progressive experience in related engineering discipline\nExperience with storable liquid propulsion (NTO/MMH, Hydrazine)\nExperience leading technical reviews (design & analysis) or investigations (risk, anomaly, or trade studies)\nHands-on experience with integrating test articles and sub-assemblies for test or production\nPrior experience working with data acquisition systems and test instrumentation including pressure transducers, thermocouples, resistance temperature detectors, flow meters, load cells, and accelerometers\nExperience with end to end ownership of technical projects from conception to delivery\nStrong interpersonal and organizational skills\nFirefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, relocation benefits, educational reimbursement, short term disability, and flexible PTO options.\nTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.\nFirefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.","description_format":"text","description_chars":4702,"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":["Parental leave"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Space & Aerospace"],"lifecycle":[{"event":"open","at":"2026-10-25T06:26:11Z"}],"visa":[],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.6,"p_room":0.35,"age_days":10,"expected_fill_days":5,"reasons":["conf:11","velocity","win:tail","comp:brand"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/firefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team","json_url":"https://alion.io/job/firefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team.json","meta":{"generated_at":"2026-11-02T02:19:24Z","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":3429,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":63753},"rest":"https://alion.io/mcp/rest/get_company?id=63753"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffirefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team"},{"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%2Ffirefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team"},{"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%2Ffirefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team"},{"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/firefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffirefly-aerospace-propulsion-engineer-ii-spacecraft-engine-team"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3227567}},{"tool":"search_jobs","arguments":{"company":"fireflyspace.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3227567},"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"}}