About this opportunity
Zohorecruit lists this Senior Mechanical Design Engineer (RF Systems & Radomes) opportunity in rio rancho, New Mexico. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Senior Mechanical Design Engineer (RF Systems & Radomes)
Rio Rancho, United States | Posted on 08/06/2026
Castelion was founded to restore America’s ability to field advanced weapons at speed and scale. Inspired by the engineering urgency of the WWII and Apollo eras, we combine rapid iteration, vertical integration, and scalable manufacturing to deliver affordable, high-performance strike systems. Our mission: rebuild industrial agility to strengthen national security and outpace evolving threats.
About the Role:
Senior Mechanical Design Engineer (RF Systems & Radomes)
We are seeking a Senior Mechanical Design Engineer to design and deliver RF-critical structures and packaging for Castelion's long-range hypersonic strike vehicles. This role is focused on radome development and RF subsystem integration, ensuring structural integrity and thermal survivability while preserving RF performance. You will work hands-on with multidisciplinary engineering teams to design, analyze, build, and validate radomes and RF packaging solutions in a fast-paced, hardware-driven environment.
Requirements
Bachelor's, Master's, or PhD in Mechanical Engineering or related field
5+ years of experience in mechanical design for aerospace or high-performance systems
Experience designing radomes, RF-transparent structures, or packaging for RF/antenna systems
Familiarity with RF performance considerations such as dielectric properties, insertion loss, and boresight error
Strong background in structural and thermal analysis for extreme environments
Proficiency in CAD and analysis tools (e.g., NX, SolidWorks, ANSYS, or equivalent)
Experience with tolerance stack-up, alignment, and precision assembly design
Familiarity with materials used in RF applications (e.g., ceramics, composites, low-loss dielectrics) and high-temperature environments
Experience with hardware build, test, and troubleshooting in a lab or flight hardware environment
Strong problem-solving mindset, thriving in a fast-paced, hardware-rich, high flight cadence environment
Employee Equity: Meaningful equity forall full-time employees - share value has increased 150x in three years
Personal Time Off: Four (4) weeks of paidtime off to unplug, reset, and come back sharp—velocity matters,burnout doesn't
Medical: We offer plans at 100% employeecovered and 80% of dependent coverage
Dental & Vision: We cover 90%employees and 80% for dependents to ensure you and your family haveaccess to quality preventive and ongoing care
FSA/HSA: To support long-term health andfinancial resilience, we offer FSA and HSA options that allowemployees to set aside pre-tax dollars for eligible medical anddependent care expenses
Retirement: 401k plan offered to supportlong term financial growth along side high-impact, high-velocity work
Paid Parental Leave: We support growingfamilies with meaningful time to bond and recover. Birthing parentsare eligible for up to 10 weeks of paid leave, while non-birthingparents may take up to 4 weeks of paid leave. This time can be usedfor pre-natal care, pregnancy, childbirth, and related medicalneeds—ensuring every parent has the support they need during thisimportant life moment.8-weeks of paid parental leave for allparents. Additional paid pregnancy leave for CA employees
Meals & Catering: Frequently cateredlunches and team meals, plus company-covered meals when extra timeor effort is required
Snacks & Beverages: Fully stockedkitchen with unlimited snacks and drinks to keep you fueledthroughout the day
Performance & Fitness: $100 monthlyfitness stipend to support peak performance and health, both insideand outside of work
EV Charging: Onsite electric vehiclecharging available for employees
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Worksite address
rio rancho, NM, 87144, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.