Senior Propulsion Engineer - Hypersonic Rocket Motors Lead

Castelion Corporation; Torrance (CA); Hybrid; USD 150,000 - 230,000; Full time

Job summary

Castelion Corporation in Torrance, CA, is seeking a Senior Propulsion Engineer to design, build, and test rocket motor systems for its long-range hypersonic programs. You will work hands-on with multidisciplinary teams to deliver reliable propulsion across mission phases.

The role emphasizes ownership, rapid iteration, and close collaboration with structures, thermal, GNC, and manufacturing teams to ensure integration and performance under extreme conditions.

Qualifications

• Bachelor's, Master's, or PhD in Aerospace or Mechanical Engineering.
• 5+ years in rocket propulsion design, analysis, and testing.
• Solid rocket motor design experience, including grain design and nozzle performance.

Responsibilities

• Design and develop rocket motor systems and components.
• Lead propulsion hardware architecture to meet performance and thermal requirements.
• Perform internal ballistics, thermal, and structural analyses.
• Collaborate with structures, thermal, GNC, and manufacturing teams.
• Plan and execute static fire tests and development campaigns.
• Conduct failure analysis and drive design improvements.
• Define qualification and flight test plans and document results.
• Mentor junior engineers and support program leadership.

Skills

Rocket propulsion design

Internal ballistics

Thermal analysis

Problem solving

Education

Bachelor's/Master's/PhD in Aerospace/Mechanical Engineering

Tools

MATLAB

ANSYS

Instrumentation

Job description

Castelion Corporation in Torrance, CA, is seeking a Senior Propulsion Engineer to design, build, and test rocket motor systems for its long-range hypersonic programs. You will work hands-on with multidisciplinary teams to deliver reliable propulsion across mission phases.

The role emphasizes ownership, rapid iteration, and close collaboration with structures, thermal, GNC, and manufacturing teams to ensure integration and performance under extreme conditions.