Senior Guidance Systems Engineer

STEM Boomerang; Rio Rancho (NM); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Equity for employees

Paid time off 4 weeks

Medical coverage 100% employee

Dental & Vision coverage 90% employees

FSA/HSA options

401k plan

Paid parental leave up to 10 weeks (b;

Paid parental leave up to 4 weeks (non

Meals & catering

Snacks & beverages

Fitness stipend $100/month

EV charging onsite

Job summary

Castelion is seeking a Senior Guidance Engineer to develop guidance solutions for long-range hypersonic strike vehicles. You will shape flight performance from concept through flight tests and deployment while working hands-on with multidisciplinary teams to design, analyze, and validate guidance algorithms in a rapid hardware-driven environment.

The role requires advanced degrees in aerospace and a strong background in trajectory simulation, onboard guidance, AI-assisted optimization, and

Qualifications

• 3+ years of guidance system design, analysis, and validation for high-speed vehicles (missiles, rockets, hypersonic systems)
• Field guidance systems experience for DoD or similar programs
• Experience with 3DOF and 6DOF trajectory simulation and real-time trajectory generation
• Familiarity with AI/deep learning for trajectory optimization
• Proficiency with flight/trajectory analysis tools TAOS or POST

Responsibilities

• Develop guidance solutions for Castelion's long-range hypersonic vehicles from concept through flight tests
• Shape flight performance by designing, analyzing, characterizing, and validating guidance algorithms
• Collaborate with multidisciplinary teams in a rapid hardware-driven development environment
• Support deployment of guidance systems across flight campaigns

Skills

Guidance design

Trajectory simulation

Onboard guidance

AI for trajectory

3DOF/6DOF analysis

Hardware-ready env

Education

Bachelor's in Aerospace Engineering

Master's in Aerospace Engineering

PhD in Aerospace Engineering

Tools

TAOS

POST

Job description

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:

We are seeking a Senior Guidance Engineer to develop guidance solutions for Castelion's long-range hypersonic strike vehicles. This role is critical in shaping the flight performance of our hypersonic systems from concept through flight tests and operational deployment. You will work hands-on with multidisciplinary engineering teams to design, analyze, characterize, and validate guidance algorithms in a rapid hardware-driven environment.

Requirements

• Bachelor's, Master's, or PhD in Aerospace Engineering or related field
  
• 3+ years of experience in guidance system design, analysis, and validation for high-speed vehicles (missiles, rockets, hypersonic glide vehicles, or maneuvering re-entry systems)
  
• Demonstrated ability to field guidance systems for DoD or similar programs
  
• Strong background in trajectory/flight simulation (3DOF and 6DOF) and real-time trajectory generation/optimization methods
  
• Experience with onboard trajectory generation approaches
  
• Familiarity with the application of AI/deep learning to trajectory optimization
  
• Proficiency in flight/trajectory analysis tools such as TAOS, POST, or equivalent
  
• 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