Senior Digital System Designer

Job Title

Senior Digital System Designer

Role Summary

Member of the System-Architecture team responsible for defining and implementing digital-logic systems that control PsiQuantum's photonic quantum computer. Work spans algorithm design, cycle-accurate modeling, FPGA integration, and cross-discipline collaboration to meet stringent latency and throughput constraints.

Experience Level

Senior — typically 5+ years of relevant digital-design experience.

Responsibilities

Translate system requirements into concrete digital hardware designs and implement end-to-end solutions that meet low-latency, throughput, and footprint targets.

• Gather and convert high-level requirements into hardware requirements and specifications.
• Design and implement low-latency algorithms for real-time data-plane tasks in an optical quantum computer.
• Develop cycle-accurate Python models for simulation and integrate them into discrete-event simulations.
• Implement corresponding SystemVerilog (or VHDL) RTL that matches Python models and constraints.
• Integrate algorithms and RTL into FPGA platforms and toolchains; collaborate with FPGA designers.
• Write behavioral tests and verification code (Python) to validate implementations.
• Collaborate with physicists and other engineers to resolve trade-offs and optimize designs.
• Produce clear requirements, design documentation, and technical reports.

Requirements

Must-have technical skills and experience.

• 5+ years of digital-design experience.
• Proven experience with SystemVerilog or VHDL for design and simulation.
• Experience working with FPGAs (Xilinx preferred) and associated toolchains.
• Experienced Python programmer for modeling, verification, and tooling.
• Strong critical thinking and problem-solving skills for loosely-defined, complex problems.
• Ability to work independently in a fast-moving startup environment and collaborate across teams and time zones.
• Excellent verbal and written communication skills.

Nice-to-have:

• Distributed system experience involving event correlation under real-time constraints.
• Experience with High Level Synthesis (e.g. Xilinx Vitis).
• Experience using Python for verification (e.g. Cocotb).
• Knowledge of photonics and linear optics.

Education Requirements

Bachelor's or master's degree in Electrical Engineering, Computer Engineering, or a related discipline.

About the Company

Company: PsiQuantum

Headquarters: Palo Alto, CA, United States

PsiQuantum develops silicon-photonic quantum computers aimed at building million-qubit, fault-tolerant systems. Founded in 2016, the company combines semiconductor manufacturing processes, photonic hardware, and quantum software to scale quantum systems for commercial and government applications.