Sr/Staff Digital Design Engineer

Lightmatter•Boston, MA

1d•$154,000 - $218,000•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 involves building digital designs that integrate silicon photonic communication and compute technology into digital accelerators, working with a multidisciplinary team to deliver high-performance, low-power designs in advanced technology nodes. The position also includes documenting designs, managing RTL implementation, and identifying and mitigating project risks.

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 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 for automating simulation and design workflows.
Experience interfacing digital logic directly with analog mixed-signal IP, such as SerDes, ADCs/DACs, or optical transceivers.

Responsibilities

Develop RTL modules in SystemVerilog, considering design-for-test (DFT) requirements.
Debug complex logic and mixed-signal simulations.
Understand and integrate silicon photonic communication and compute technology into digital accelerator designs.
Work 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.