About the Role:
We are seeking a Senior Structures & Composites Engineer to design and deliver high-performance rocket motor cases for Castelion's long-range hypersonic strike vehicles. This role is critical to enabling lightweight, high-strength propulsion structures capable of withstanding extreme pressure and thermal environments. You will work hands-on with multidisciplinary engineering teams to design, analyze, build, and validate composite and metallic motor case structures in a fast-paced, hardware-driven environment.
Requirements
- Bachelor's, Master's, or PhD in Aerospace Engineering, Mechanical Engineering, or related field
- 5+ years of experience in structural and composite design for aerospace or high-performance pressure vessel applications
- Strong background in composite materials, including filament winding, laminate theory, and failure criteria (e.g., Tsai-Wu, Hashin)
- Experience designing pressure vessels, COPVs, or rocket motor cases for high-pressure applications
- Proficiency in structural analysis tools (e.g., ANSYS, Abaqus, NASTRAN, or equivalent)
- Familiarity with manufacturing processes for composites, including winding, curing, and inspection methods (e.g., NDI/NDT)
- Experience with proof/burst testing and structural validation of pressure vessels
- Experience with hardware build, test, and troubleshooting in a lab or production environment
- Strong problem-solving mindset, thriving in a fast-paced, hardware-rich, high test cadence environment
Benefits
- Employee Equity: Meaningful equity for
all full-time employees - share value has increased 150x in three years
- Personal Time Off: Four (4) weeks of paid
time off to unplug, reset, and come back sharp—velocity matters,
burnout doesn't
- Company Paid Holidays: Ten (10) company
paid holidays
- Medical: We offer plans at 100% employee
covered and 80% of dependent coverage
- Dental & Vision: We cover 90%
employees and 80% for dependents to ensure you and your family have
access to quality preventive and ongoing care
- FSA/HSA: To support long-term health and
financial resilience, we offer FSA and HSA options that allow
employees to set aside pre-tax dollars for eligible medical and
dependent care expenses
- Retirement: 401k plan offered to support
long term financial growth along side high-impact, high-velocity work
- Paid Parental Leave: We support growing
families with meaningful time to bond and recover. Birthing parents
are eligible for up to 10 weeks of paid leave, while non-birthing
parents may take up to 4 weeks of paid leave. This time can be used
for pre-natal care, pregnancy, childbirth, and related medical
needs—ensuring every parent has the support they need during this
important life moment.8-weeks of paid parental leave for all
parents. Additional paid pregnancy leave for CA employees
- Meals & Catering: Frequently catered
lunches and team meals, plus company-covered meals when extra time
or effort is required
- Snacks & Beverages: Fully stocked
kitchen with unlimited snacks and drinks to keep you fueled
throughout the day
- Performance & Fitness: $100 monthly
fitness stipend to support peak performance and health, both inside
and outside of work
- EV Charging: Onsite electric vehicle
charging available for employees