Hiring: Propulsion Engineer Company: Castelion Location: Torrance, CA Job Posted Time: 2026-09-10 11:21:28 Employment Type: Contract Target Skills & Keywords : Aerospace Engineering, Assembly, AutoCAD, CAD, CATIA, PTC Creo, Security Clearance About the job Experience: •Proficient in test methods/setups, with the ability to conduct trade studies using engineering fundamentals to make informed recommendations, even with limited information. •Extensive experience working with aerospace materials (including metals, plastics, and composites) and a solid understanding of spacecraft and/or launch vehicle propulsion systems and fluid components. •Skilled in CAD software (NX 8.5 or similar packages like PTC Creo, CATIA) with expertise in geometric dimensioning and tolerancing (GD&T) per ASME Y14.5-1994. •Relevant experience with rocket motors, solid propulsion elements, and structural interfaces, including knowledge of insensitive munitions protocols and practices. •Hands-on experience supporting rapid product development, including designing hardware for high-rate production in alternative non-aerospace domains. Required Skills: •Translate project objectives into cost-effective designs that can be produced at scale – the Castelion way. •Spearhead the creation of innovative solid rocket motor designs, demonstrating autonomy even with limited expert guidance. •Actively engage in the assembly, testing, and troubleshooting of prototypes and production builds, providing expert guidance as necessary. •Use our rapid iteration cycles to validate product performance and facilitate necessary design adjustments. •Produce, evaluate, and authorize CAD models and drawings, adhering to internal standards and ASME Y14.5-2009 guidelines. •Provide thorough assessments and resolutions for any discrepancies in hardware, including supporting analyses when required. •Partner cross-functionally with supply chain to ensure seamless support and adapt designs to mitigate availability risks and time delays. •Please 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. Qualifications: •Bachelor's or advanced degree in aerospace engineering, manufacturing engineering, materials engineering, mechanical engineering or physics. •2+ years of mechanical or fluids design, analysis, or build experience (student project team, university rocketry club and internship experience counts). •Effective communication skills are crucial for collaborating with cross-functional teams, presenting design concepts, and documenting work. •Willing and able to work extended hours and/or weekends with minimal notification to meet critical deadlines leading up to major milestones. •Able to travel up to 30% on an ongoing basis •Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details. •Hold a master's degree or PhD in a technical discipline such as mechanical or aerospace engineering. •Currently hold an active DoD Secret Security Clearance or higher. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!