Charged-Particle Optics, Modeling & Simulation — Develop and validate charged-particle optics concepts; build computational models for electron- and ion-beam systems; use Python and charged-particle simulation tools to analyze beam behavior, focusing, shaping, alignment, transport, stability, energy spread, brightness, and optical performance; correlate simulations with experimental results and improve models. System, Source & Component Development — Design, develop, integrate, evaluate, and optimize microscopes, SEM, FIB, DualBeam systems, electron/ion sources, charged-particle optics, beam-shaping components, HVPS/high-voltage systems, vacuum systems, gas chemistry, detectors, optics, lasers, robotics, and electro-mechanical and pneumatic systems.