Sr/Staff Digital Design Engineer

Lightmatter•Mountain View, CA

1d•$164,000 - $222,000•Hybrid

About The Position

Lightmatter is hiring a Digital Design Engineer to help develop an ASIC for a next-generation artificial intelligence computing architecture. The role works with scientists and engineers to build optical computing systems and integrate silicon photonic communication and compute technology into digital accelerator designs. It focuses on creating high-performance, low-power designs in advanced technology nodes, with collaboration across architecture, design verification, physical design, photonics, analog, and software teams.

Requirements

Bachelor’s degree in Electrical or Computer Engineering, or a related field.
At least 5 years of experience in ASIC design or similar high-speed chip design, with multiple successful tape outs.
Proficiency in SystemVerilog or Verilog for digital logic design.
Experience debugging complex logic and mixed-signal simulations using industry-standard EDA tools, such as Synopsys VCS, Cadence Xcelium, Questa, or equivalent mixed-signal co-simulation environments.
Demonstrated track record of delivering high-performance, low-power digital designs in advanced semiconductor process nodes.
Capacity to comply with federally mandated U.S. export control requirements.

Nice To Haves

Master's degree in Electrical or Computer Engineering, or a related field.
Experience with communication protocols such as PCIe.
Knowledge of processor design, accelerators, and/or memory hierarchies.
Exposure to silicon photonics (SiPh), optical compute/interconnect architectures, or electro-optic interface integration.
Strong scripting skills in Python, Perl, Tcl, or Bash to automate simulation and design workflows.
Experience interfacing digital logic directly with analog mixed-signal (AMS) IP, such as SerDes, ADCs/DACs, or optical transceivers.

Responsibilities

Develop RTL modules, including SystemVerilog, with design-for-test (DFT) considerations for IC development.
Debug complex logic and mixed-signal simulations.
Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
Collaborate with Architecture, Design Verification, Physical Design, Photonic, Analog, and Software teams to realize high-performance, low-power designs in advanced technology nodes.
Create design specifications and documentation to facilitate collaboration with partner teams.
Document module functionality and timing.
Manage RTL implementation to deliver functionally correct, performant designs within project schedules by identifying, communicating, and mitigating risks.