Senior Scientist – Radio Frequency (RF) Measurements & Modeling

Riverside Research is seeking a Senior RF Scientist specializing in radio-frequency measurement, electromagnetic modeling, and material characterization. This role provides expert-level technical leadership across broadband RF materials characterization, high‑fidelity electromagnetic property extraction, and advanced modeling and simulation of next‑generation RF systems.

• Lead advanced RF material characterization using waveguide, free-space, coaxial probe, and hybrid methodologies.
• Execute sample preparation and modification of measurement equipment to meet program needs.
• Perform S-parameter extraction of complex permittivity and permeability using physics-based algorithms.
• Develop and validate RF workflow techniques including calibration and time-domain gating.
• Analyze broadband RF data supporting multi-dimensional electromagnetic property databases.
• Design, develop, simulate, and/or test computational electromagnetic (CEM) models for RF components and materials.
• Evaluate simulation, laboratory, and production data; prepare analyses; and recommend design or process improvements.
• Lead simulation workflows using HFSS, COMSOL, or equivalent full‑wave EM solvers to characterize performance and guide design optimization.
• Translate system‑level RF requirements into modeling strategies, simulation plans, and actionable design tasks.
• Develop parametric models, perform sensitivity analyses, and evaluate electromagnetic trade‑offs.
• Lead junior and mid-level scientists and guide technical development.
• Recommend technologies, equipment upgrades, and laboratory improvements.
• Collaborate with multi-disciplinary teams supporting government RF material research.
• Prepare technical proposals, documentation, and present findings to customers.

• At least 8 years of RF measurement/modeling experience with a M.S. or Ph.D. in physics, electrical engineering, applied engineering, or a related field or equivalent work experience.
• U.S. Citizen with an active Top-Secret clearance with the ability to obtain SCI/SAP
• Expertise with VNA workflows including waveguide, coaxial probe, and free-space techniques.
• Experience with dielectric property extraction and generation of materials signature models.
• Experience with computational electromagnetic solvers (e.g., HFSS, FEKO, CST, COMSOL, etc.).
• Deep understanding of electromagnetic theory, RF propagation, and computational modeling techniques (FEM, FDTD, MoM).
• Ability to lead technical teams and coordinate complex tasks.
• Excellent problem-solving skills and the ability to work independently, as well as part of a team.
• Strong communication skills, both written and verbal, with the ability to present complex technical information clearly.