Signal Integrity Engineer in Paignton

We are seeking a PhD-level RF / High-Speed Electronics Engineer with a strong foundation in applied mathematics, electromagnetic theory, and measurement science. You will work at the intersection of RF engineering, signal integrity, and electro-optics, developing high-frequency systems that interface closely with advanced photonic components operating at multi-tens of GHz and beyond. This role is ideal for candidates who think from first principles, are rigorous in experimentation, and are motivated to bridge theory, simulation, and real-world measurements.

What You’ll Do:

• High-speed circuit design: Contribute to high-speed interconnects and transceiver electronics, including drivers, TIAs, and front-end circuits for modulators and photodetectors.
• 3D EM modelling & simulation: Develop and apply full-wave 3D electromagnetic models of RF structures, interconnects, and packaging (e.g. using HFSS, CST), alongside analytical models (transmission lines, S-parameters, noise, linearity, SI/PI), and correlate predictions with measured data.
• Measurement & characterisation: Design and execute calibrated RF measurements (VNA SOLT/TRL, de-embedding, time- and frequency-domain analysis) using >50 GHz instrumentation.
• Electro-optic integration: Co-design electronic interfaces for integrated photonic switches and transceivers, working closely with photonics and systems teams.
• Prototype bring-up & debugging: Support schematic and PCB reviews, lab debugging, and performance optimisation.
• Data analysis & automation: Use Python or MATLAB for data analysis, modelling, and lab automation.
• Documentation & communication: Clearly document results and communicate insights across multidisciplinary teams.

Required Qualifications and Experience:

• PhD in Electrical/Electronic Engineering, Physics, Photonics, or a closely related field.
• Deep understanding of electromagnetics, RF/microwave engineering, and high-frequency circuit theory.
• Experience with 3D electromagnetic simulation tools (e.g. HFSS, CST, or similar full-wave solvers).
• Strong applied mathematics background (linear algebra, signal processing, numerical methods, optimisation).
• Hands-on experience with RF measurement techniques and instrumentation (VNAs, oscilloscopes, spectrum analysers, BERTs).
• Programming skills for modelling and data analysis (Python, MATLAB, or similar).
• Ability to apply theory to real systems and extract insight from experimental data.
• Clear communication and effective collaboration in multidisciplinary teams.
• Signal integrity / power integrity for high-speed interconnects.
• Silicon photonics, co-packaged optics, or optical communications.
• Strong experimental expertise (calibration, de-embedding, fixture design, noise/linearity/BER measurement).
• PCB design and EDA tools (e.g. Cadence, PADS).
• Exposure to FPGA development (Verilog/VHDL).
• Thermal considerations in high-density electronic systems.
• Publications in relevant journals or conferences.