The R D Verification Engineer joins the Digital Mission Engineering business unit to perform software testing and quality assurance on industry-leading aerospace simulation tools including Systems Tool Kit (STK), Orbit Determination Tool Kit (ODTK), and Test & Evaluation Tool Kit (TETK). This role is ideal for an aerospace engineer with a strong foundation in astrodynamics, who is passionate about ensuring mission-critical software tools are robust, accurate, and aligned with user needs. The engineer will assess functionality, performance, and usability of complex space and defense modeling tools used by engineers, analysts, and mission planners. This includes verifying orbital mechanics models, satellite mission simulations, maneuver planning, and space situational awareness capabilities. The role also contributes to internal test infrastructure, automated testing processes, and tool development. This position is not eligible for immigration sponsorship.