Digital Design Engineer

E-Space is seeking experienced Digital Design Engineers for our Satellite Avionics team. The role involves owning the electrical design of complex digital boards for a next‑generation satellite constellation, including high‑speed interfaces, FPGA integration, and mixed‑signal subsystems. You will play a central role in delivering flight‑qualified avionics hardware from concept through qualification. Key Responsibilities Own schematic design and component selection for digital avionics boards, from concept through flight qualification. Design high‑speed SERDES interfaces (PCIe, JESD, gigabit links) and DDR4/DDR5 memory interfaces with proper timing closure. Develop clocking architectures including PLL configuration, jitter management, and clock distribution networks. Perform power budgeting and system‑level power allocation across board subsystems. Apply radiation‑tolerant design techniques including SEU/SEE mitigation, TID considerations, and appropriate component derating. Collaborate with FPGA engineers on support circuitry design, pinout planning, and power/layout requirements. Drive board bring‑up activities including configuration, interface verification, and structured debugging. Participate in design reviews and cross‑functional integration with RF, power, thermal, and mechanical teams. Required Qualifications Own schematic design and component selection for digital avionics boards, from concept through flight qualification. Design high‑speed SERDES interfaces (PCIe, JESD, gigabit links) and DDR4/DDR5 memory interfaces with proper timing closure. Develop clocking architectures including PLL configuration, jitter management, and clock distribution networks. Perform power budgeting and system‑level power allocation across board subsystems. Apply radiation‑tolerant design techniques including SEU/SEE mitigation, TID considerations, and appropriate component derating. Collaborate with FPGA engineers on support circuitry design, pinout planning, and power/layout requirements. Drive board bring‑up activities including configuration, interface verification, and structured debugging. Participate in design reviews and cross‑functional integration with RF, power, thermal, and mechanical teams. Preferred Qualifications Experience with satellite or spacecraft avionics design and qualification (EM/QM/FM build cycles). Background in non‑volatile memory technologies (Flash, MRAM, FRAM) and in‑system programmability. Exposure to power supply design and power integrity analysis for digital boards. Experience with design for radiation reliability and single‑event effects mitigation at the board level. Familiarity with signal integrity simulation tools (HyperLynx SI/PI, Ansys, ADS). Tools & Technologies Altium Designer (schematic capture and layout review) HyperLynx SI, SI/PI, and Full‑Wave (signal and power integrity) SPICE‑based circuit simulation FPGA vendor toolchains (for interface bring‑up and debug) Compensation & Location $150,000 - $250,000 a year. This is a full‑time, exempt position based out of our Saratoga office. The total compensation package will be determined by experience and qualifications. #J-18808-Ljbffr E-Space