Space Systems Modeling Engineer for Resilient Constellations

Amazon; El Segundo (CA); On-site; USD 129,000 - 175,000; Full time

Job summary

KGS LLC in California's El Segundo is seeking a Space Systems Modeling and Analysis Engineer to develop high-fidelity models for SATCOM, NAVWAR, SBST, and MWT missions. In this role, you will build fast, parallel simulations of proliferated constellations across LEO, MEO, and GEO to support resilience under degraded conditions.

You will collaborate with mission architects and government stakeholders to translate requirements into simulation parameters and produce technical documentation for

Qualifications

• Bachelor's degree in a STEM field.
• 3+ years of physics-based space systems modeling experience.
• Experience across multiple orbital regimes (LEO, MEO, GEO).
• Proficiency in MATLAB, Python, or C++ for simulations.
• Ability to obtain/maintain a US security clearance.

Responsibilities

• Develop, validate, and maintain high-fidelity models of multi-orbit constellations (pLEO, MEO, GEO) for SATCOM, NAVWAR, SBST, and MWT mission areas.
• Design and execute large-scale, parallelizable simulations to evaluate constellation performance, coverage, and resilience under nominal and degraded conditions.
• Perform trade studies and sensitivity analyses on constellation design parameters, sensor geometries, and network topologies.
• Model ground segment architectures including radar systems, ground entry points, and ground-based command and control infrastructure.
• Model space-based threats including maneuverable satellites, counter-space systems, and electromagnetic warfare effects on space architectures.
• Model Alt-PNT frameworks including timing budget analysis and navigation warfare scenarios.
• Analyze Space Data Network (SDN) architectures including space-to-space crosslinks, exchange points, and network service orchestration.
• Develop sensor performance models for multi-phenomenology detection (infrared, radar) across missile warning and moving target indication missions.
• Support architecture decisions by quantifying system resilience, capacity, and performance under adversarial conditions.
• Produce technical documentation, trade study reports, and briefings for engineering and program leadership.
• Collaborate with systems engineers, mission architects, and government stakeholders to translate operational requirements into simulation parameters.

Skills

MATLAB

Python

C++

HPC

Education

Bachelor's degree in a STEM discipline

Master's or Ph.D. in Aerospace Engineering/related field

Tools

STK

GMAT

Monte Carlo engines

Job description

KGS LLC in California's El Segundo is seeking a Space Systems Modeling and Analysis Engineer to develop high-fidelity models for SATCOM, NAVWAR, SBST, and MWT missions. In this role, you will build fast, parallel simulations of proliferated constellations across LEO, MEO, and GEO to support resilience under degraded conditions.

You will collaborate with mission architects and government stakeholders to translate requirements into simulation parameters and produce technical documentation for