Modeling & Simulation Engineer, Missiles (Aerospace)

Location: El Segundo, California, United States; onsite

Salary: $140,000–$190,000 per year base compensation

Company

hirify.global develops aerospace and defense systems powered by Coherent Distributed Networks, with products supporting warfighters, commercial air operators, and border protection teams. Founded in 2022, the company has raised $1 billion and operates across five global offices.

What you will do

• Develop, integrate, maintain, and validate 3-DOF and 6-DOF flight and engagement simulations for missiles, interceptors, guided weapons, and related flight vehicles.
• Implement models for equations of motion, coordinate transformations, rigid-body dynamics, numerical integration, vehicle states, environments, aerodynamics, propulsion, actuators, sensors, seekers, targets, threats, launch systems, staging, and separation events.
• Integrate guidance, navigation, estimation, autopilot, control-law, seeker, tracker, fire-control, tactical, embedded flight-software, and hardware models into closed-loop, SIL, SITL, HITL, HWIL, real-time, and batch environments.
• Evaluate trajectory and engagement performance, conduct design trades, and perform error-budget, Monte Carlo, sensitivity, uncertainty, covariance, design-of-experiments, and robustness analyses.
• Translate requirements into simulation cases, performance measures, verification methods, test scenarios, preflight predictions, and expected-performance envelopes.
• Analyze telemetry, laboratory, ground-test, captive-carry, flight-test, and range data; perform postflight reconstruction, model correlation, parameter estimation, and discrepancy resolution.

Requirements

• Bachelor’s degree in aerospace, mechanical, electrical, or computer engineering, computer science, physics, applied mathematics, or a related technical discipline, or equivalent demonstrated expertise.
• Relevant missile or flight-vehicle modeling and simulation experience, including flight dynamics, GNC, trajectory analysis, weapon-system performance, or a closely related field.
• Hands-on experience with 3-DOF or 6-DOF dynamic simulations and strong fundamentals in flight mechanics, rigid-body dynamics, coordinate systems, numerical integration, control or estimation, and dynamic-system analysis.
• Depth in at least one missile modeling area, including vehicle modeling, guidance, flight control, navigation and estimation, trajectory optimization, seeker or terminal-engagement integration, or real-time, HITL, or HWIL simulation.
• Strong programming ability in MATLAB, Python, C++, or another scientific or analytical environment.
• Experience with Monte Carlo, error-budget, sensitivity, robustness, uncertainty-quantification, or design-of-experiments analysis.
• Experience validating or correlating dynamic models against analytical references, subsystem, laboratory, ground-test, telemetry, flight-test, range, or other authoritative data.
• Experience with system requirements, subsystem interfaces, test objectives, verification methods, performance criteria, Git, code review, automated testing, issue tracking, continuous integration, and reproducible workflows.
• Ability to work independently, make sound technical judgments, document assumptions and limitations, and collaborate across engineering disciplines. Active Secret clearance required.

Nice to have

• Master’s degree or higher in aerospace, mechanical, or electrical engineering, applied mathematics, or a related field.
• Experience with tactical or strategic missiles, ballistic systems, interceptors, cruise missiles, air- or ground-launched weapons, hypersonic vehicles, launch vehicles, or other advanced guided flight systems.
• Experience with guidance laws, autopilots, control laws, state estimators, Kalman filters, multisensor navigation, classical, modern, robust, optimal, adaptive, or nonlinear control.
• Experience with trajectory optimization, optimal control, multidisciplinary design optimization, launch-zone, intercept, or engageability analysis.
• Experience modeling aerodynamics, propulsion, boost phase, thrust-vector control, staging, separation, mass properties, seekers, target tracking, fire control, fuzing, lethality, or endgame performance.
• Experience integrating embedded or tactical software, supporting flight tests and range operations, analyzing telemetry, conducting postflight reconstruction, or resolving flight anomalies.
• Experience with large-scale or high-performance Monte Carlo, parallel, cloud, or cluster simulation; MBSE; requirements traceability; formal V&V; or simulation-credibility assessments.
• Experience supporting DoD, DARPA, AFRL, ONR, MDA, NAVAIR, DEVCOM, intelligence-community, or advanced aerospace programs. Active or eligible Top Secret / SCI clearance is preferred.

Culture & Benefits

• Medical, dental, and vision benefits fully paid by the company.
• 401(k) with a 50% company match up to 6% of pay, FSA, HSA, and life insurance.
• Free daily lunch, no-meeting Fridays, unlimited PTO, and casual dress code.
• Relocation assistance, pre-IPO stock options, and annual bonuses planned.
• Approximately 250 employees across five global offices.