Senior Thermal Engineer: Shape High-Performance Missile Systems

Castelion; Torrance (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

PTO 4 weeks

10 holidays

Health benefits (employee + dependents

Dental and vision plans

Parental leave

Fitness stipend $100/month

Onsite EV charging

Catered meals

Food during high-demand periods

Fully stocked kitchen

Job summary

Castelion in California is seeking a Senior Thermal Engineer to own the thermal methodology for our missile systems. You will define architectures, develop high-fidelity models, and perform first-principles analyses, simulations, and hardware testing to ensure reliable performance in demanding environments.

You will collaborate across aero, structures, electrical, propulsion, and test engineering, moving between analytical models and flight data, and you will present findings at reviews and

Qualifications

• BS or higher in aerospace, mechanical engineering, or applied physics.
• 5+ years of aerospace thermal engineering experience on rocket, spacecraft, aircraft or missile programs.
• Experience with electronic unit thermal analysis and component junctions.
• Ground testing experience with thermal instrumentation and data acquisition.
• Strong MATLAB/Python programming for tool development.
• Experience preparing formal documentation.
• CAD experience with SolidWorks or Siemens NX.
• Ability to obtain and hold a U.S. security clearance.

Responsibilities

• Thermal design and analysis of unmanned air vehicles at conceptual, preliminary, and detailed design maturities.
• Define thermal system architectures and material selection strategies for vehicles operating in demanding flight environments.
• Thermal analysis of flight vehicles using standard thermal analysis codes and engineering/hand methods.
• Transient thermal analysis for time-varying mission profiles.
• Ground test planning, execution, and analysis in specialized thermal test facilities.
• Flight test planning, execution, and post-flight thermal data analysis.
• Use first principles and MATLAB/Python models to inform design decisions.
• Collaborate with aerodynamics, structures, electrical, and systems engineers on integrated solutions.
• Present thermal status at formal reviews internally and with customers.
• Prepare formal documentation (specifications, test procedures, technical reports).

Skills

Heat transfer

Fluid dynamics

High-temperature environments

First principles analysis

MATLAB

Python

Documentation

Security clearance

Team collaboration

Education

BS in aerospace/mechanical engineering or applied physics

MS in relevant field (preferred)

Tools

SolidWorks

Siemens NX

Thermal Desktop/SINDA

Job description

Castelion in California is seeking a Senior Thermal Engineer to own the thermal methodology for our missile systems. You will define architectures, develop high-fidelity models, and perform first-principles analyses, simulations, and hardware testing to ensure reliable performance in demanding environments.

You will collaborate across aero, structures, electrical, propulsion, and test engineering, moving between analytical models and flight data, and you will present findings at reviews and