Senior PCB/FPGA Engineer

We are hiring a Senior PCB/FPGA Engineer to own the electrical hardware that drives and reads out our photonic integrated circuits. You will design custom high-speed and RF boards, build FPGA-based control and test systems, and bring up optical transceiver hardware running at high baud rates. This is a hands-on role at the boundary of photonics and electronics. You will work daily with photonics, test, and firmware engineers, taking boards from schematic to validated lab hardware. What you'll do • Own custom PCB designs end to end: architecture, schematic capture, stackup selection, layout or layout review, fab/assembly hand-off, and bring-up. • Design high-speed and RF boards for optical transceivers, including driver, TIA, and modulator/photodetector interfaces. • Engineer controlled-impedance channels from DC to 50+ GHz: transmission lines, transitions, vias, launches, connectors, and RF probe/wirebond interfaces to PICs. • Run signal and power integrity analysis (insertion/return loss, crosstalk, PDN impedance) and correlate simulation measurements. • Develop FPGA designs for transceiver test and control: high-speed data links, PRBS generation and BER testing, DAC/ADC interfaces, and closed-loop control of bias, heaters, and TECs. • Bring up and debug boards in the lab using high-speed oscilloscopes, DCAs, BERTs, VNAs, and optical test equipment; drive root-cause analysis on SI, thermal, and layout issues. • Partner with photonics engineers on electro-optic co-design (packaging, RF launch to the PIC, thermal management) and with firmware/software teams on control interfaces. • Manage PCB vendors and assemblers, write design documentation, and lead design reviews. Required qualifications • BS/MS in Electrical Engineering or a related field, with 7+ years of hands-on hardware design experience (3S+ with a PhD). • Direct experience designing or bringing up optical transceiver hardware at high baud rates (6 50 GBd), such as 400G/800G/1.6T modules, line cards, or evaluation boards. • Proven RF PCB design experience: controlled-impedance and coplanar waveguide structures, low-loss laminates and transitions validated to 40+ GHz. • Multiple custom PCBs taken from concept to working hardware, including high-layer-count, mixed-signal boards with sensitive analog and high-speed digital sections. • Production-quality FPGA development in Verilog/SystemVerilog or VHDL on AMD/Xilinx or Intel/Altera devices, including high-speed transceivers, timing closure, and hardware debug. • Strong lab skills with high-bandwidth oscilloscopes, VNAs, BERTs, and TDR, and comfort correlating measurements to simulation. • Clear written and verbal communication, and the ability to own work across disciplines with little supervision. Compensation includes a base salary of $150,000-$250,000 and equity in CScale. Final offers depend on experience, market conditions and location.