Produce AutoCAD/Visio drawings, block diagrams, schematics, and technical design packages; Prepare engineering plans, as‑built documentation, test reports, and maintenance records; coordinate with cross‑functional teams (system architects, PMs, test sites). Use Keysight PNA‑X, FieldFox, Spec‑A, signal generators, oscilloscopes, and BER testers to measure S‑parameters, P1dB, TOI, NF, phase‑noise, group‑delay, and perform non‑linear analysis (IMD, spectral regrowth).