Mechanical Engineer

Mechanical Engineer - Space-Based Interceptor Systems

El Segundo, California | On-site

A venture-backed aerospace and defense startup is developing next-generation space-based interceptor systems designed to address emerging national security threats. The team is building advanced flight hardware that combines propulsion, structures, controls, and integrated vehicle systems with a strong emphasis on rapid development, testing, and real-world performance. This role is focused on hands-on mechanical engineering execution across interceptor structures, packaging, prototyping, integration, and test support. The engineer will contribute directly to the development of space-based interceptor (SBI) platforms from early concepts through hardware demonstration and iterative testing. This is an execution-heavy role ideal for someone who enjoys working closely with hardware in a fast-moving engineering environment.

Job Duties

• Support the design and development of mechanical and structural systems for space-based interceptor platforms
• Create CAD models, assemblies, manufacturing drawings, and integration layouts
• Assist with vehicle packaging, mounting strategies, brackets, and subsystem integration
• Perform structural and mechanical analysis to support hardware reliability and survivability
• Support prototype builds, hardware integration, and assembly activities
• Participate in testing, troubleshooting, and iterative hardware improvements
• Work closely with propulsion, electrical, controls, and aerodynamic engineers during development activities
• Assist with material selection and manufacturing coordination for aerospace-grade hardware
• Interface with machine shops, fabrication vendors, and suppliers to support hardware production
• Build development fixtures, test setups, and prototype hardware as needed
• Contribute to hands-on machining, fabrication, and hardware modification efforts

Qualifications

• B.S. in Mechanical Engineering, Aerospace Engineering, or a related technical field
• 3+ years of hands-on mechanical engineering experience
• Strong CAD experience with mechanical assemblies and integration work
• Experience supporting prototype development, hardware integration, or testing
• Familiarity with structural analysis and mechanical design fundamentals
• Experience working with aerospace-grade materials and manufacturing processes
• Comfortable working directly with hardware in a fast-paced engineering environment
• Strong communication and collaboration skills across technical teams

Preferred Experience

• Experience supporting missiles, interceptors, UAVs, spacecraft, launch systems, or other aerospace hardware programs
• Hands-on machining or fabrication experience using manual or CNC equipment
• Familiarity with vibration, thermal, or environmental testing
• Experience working with external vendors and prototype manufacturing partners
• Exposure to high-performance or high-temperature mechanical systems
• Experience supporting rapid iteration hardware development programs

Why Join Us

• High ownership role with direct impact on next-generation space-based interceptor hardware
• Opportunity to work on advanced national security systems at the intersection of space and defense
• Frequent hands-on testing, prototyping, and hardware iteration
• Small engineering team with significant technical exposure and growth opportunity
• Work closely with experienced engineers across propulsion, structures, controls, and integration

$110,000 - $150,000