Coherent Systems Architect - Mixed Signal AFE development

We are seeking a hands-on Coherent RF Architect to lead silicon bring-up, validation, and production test development for a mixed-signal Analog Front-End (AFE) featuring high-speed DACs, ADCs, PLL/clocking , and the RF electrical interface to the Transmitter and Receiver Optical Sub‑Assembly (TROSA) used in the optical coherent pluggable. The role owns end-to-end AFE characterization, from bench measurement and automation through correlation to simulation test coverage. NION2026 Required Qualifications Ph.D. in Electrical Engineering or Applied Physics with experience in mixed-signal silicon test/validation/characterization, high-speed electronics or systems. Strong fundamentals in high speed electronics and practical experience with test equipment such as high bandwidth oscilloscopes, phase noise analyzer, spectrum analyzer , VNA . Experience characterizing high-speed RF and mm-wave interconnects, amplifiers, and components Solid automation skills in Python including data pipelines and plotting. Ability to read schematics, understand board-level effects, and debug signal integrity/power integrity interactions. Comfortable in a fast-moving lab environment: hands-on probing, rework coordination, fixture bring-up Preferred Qualifications Experience with optical coherent systems and coherent transceiver architectures. Experience with MZ modulator drivers (MZMD) and TIAs in coherent links. Experience with high‑speed data converters, interleaved ADCs, and calibration techniques.