Mechanical Engineer (III-Senior), Space Based Interceptors Mass Properties

Responsibilities

• Serve as both the mass properties technical authority/subject matter expert and a mechanical design engineer for Space Based Interceptors.
• Own the mass properties of the entire system as well as piece part design as directed by the REs.
• Own mass properties of all flight vehicle structures and systems — and work with the vehicle REs on component packaging to optimize CG, MOI, and POI.
• Define mass properties definition and tracking methodology while adhering to relevant industry standards including AIAA S-110.
• Support Vehicle level REs in component level design as needed to meet mission level requirements.
• Define and maintain vehicle-level mechanical interface control documents (ICDs), mass properties reports, and configuration baselines across program milestones.
• Conform to GD&T standards per ASME Y-14.5-2018, drawing conventions, and CAD model management practices as established by the mechanical engineering department.
• Develop and approve CG and MOI measurement test plans, witness testing, and resolve anomalies and non-conformances against program requirements.
• Leverage spacecraft and space environment design expertise — including precision mechanisms, electronics packaging, and launch load structural design — to inform cross-domain solutions and bring asymmetric technical advantage to Space Based Interceptors and hypersonic programs.
• Provide technical mentorship and career development guidance to more junior mechanical engineers.

Qualifications

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related engineering discipline.
• 7–15+ years of professional experience in mechanical design and mass properties analysis, with the majority spent on Space Based Interceptors, hypersonic vehicle, or similar high-performance flight system programs.
• Demonstrated experience maintaining mass properties predictions for multiple vehicles across multiple programs simultaneously.
• Demonstrated expertise in flight vehicle structural design for high-dynamic-pressure, thermally coupled, and high-g flight environments, including experience across multiple interceptor, kill vehicle, or re-entry system programs.
• Extensive hands-on experience with guidance and seeker packaging architecture, including precision optical or RF sensor integration, alignment and retention design, vibration isolation, and EMI management within kill vehicle or interceptor envelopes.
• Expert-level proficiency in NX (Siemens), including complex multi-subsystem vehicle assemblies, configuration management, and part design best practices.
• Expert level understanding of GD&T principles, with proven experience defining custom GD&T Datum and tolerance schemes for part drawings.
• Experience performing tolerance stack ups based on assembly wide tolerances for fitment analysis.
• Strong understanding of first principles, and a first principles approach to problem solving with experience performing preliminary hand calculations for all designed parts.
• Proven track record of rocket, missile, and/or satellite mechanical design and/or mass properties experience from initial design to production.
• Strong familiarity with relevant defense and aerospace standards (e.g., MIL-SPEC, MIL-STD-810, MIL-STD-1540, AIAA S-110) and their application to design, analysis, and test.
• Experience with configuration management, MES, and PLM tools (e.g., TeamCenter, Windchill).
• Excellent written, verbal, and presentation skills, with demonstrated ability to communicate complex technical topics to executive, program, and customer audiences.
• Ability to obtain and maintain a US security clearance (Secret or TS/SCI).