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Castelion · 2 days ago

Senior Navigation and State Estimation Engineer

Torrance, CA

Full-time

Onsite

Senior Level

$140K/yr - $200K/yr

Castelion is bringing a new approach to defense development and production, focusing on short, iterative design cycles and rapid testing. They are seeking a Senior Navigation and State Estimation Engineer to lead the development of advanced navigation solutions for next-generation hypersonic missile systems, guiding architectural decisions and ensuring robust performance in challenging environments.

AerospaceGovernmentManufacturingMilitaryNational Security

No H1B

U.S. Citizen Only

Hiring Manager

Nicholas Sparks

Responsibilities

Lead the design, development, and validation of high-performance state estimation algorithms for hypersonic missile applications (EKF, UKF, sensor fusion)

Implement filter software and integrate navigation filter with flight and GNC simulation software

Define navigation architecture and requirements, working closely with avionics, and flight software teams

Develop high-fidelity sensor and environment models (IMU, GNSS, alt-PNT) to support performance prediction and algorithm robustness

Conduct Monte Carlo analysis, covariance studies, and sensitivity assessments to quantify navigation accuracy and uncertainty growth

Support pre-flight analysis and post-flight reconstruction of navigation solution performance

Qualification

Inertial navigationState estimation algorithmsEstimation theoryPythonC++RustMulti-sensor fusionHigh-Mach flight experienceReal-time flight softwareMonte Carlo analysisClear communication

Required

Bachelor's or Master's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, applied mathematics, or a related field

Strong foundation in estimation theory, nonlinear filtering, and rigid-body dynamics

Experience developing algorithms into flight software with computational and timing constraints

Proficiency with Python and Rust or C++

Understanding of navigation sensor error modeling and multi-sensor fusion

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State