San Jose
3 months ago

Job Overview

Job Type
FullTime
Pay
Not disclosed

Job description

Location:
San Jose, United States
Work arrangement:
On-site

Role Summary

IC/RTL Design Engineer/ Front-End Engineer

About the role. You design and implement the digital front-end RTL at the heart of the chip — including the high-speed datapath that moves data between UCIe and the optical front end. Guided by the interface specs and coding standards, you take blocks from micro-architecture through clean, timing-aware RTL and block-level verification. It's a hands-on role with room to grow your scope as the team and the chip mature.

Responsibilities

  • Develop block-level micro-architecture for your assigned blocks, and contribute to interface and register definitions.
  • Design and implement front-end RTL blocks in SystemVerilog — datapath elements, the UCIe streaming/RDI adapter, elastic FIFOs, and supporting logic.
  • Integrate IP and support parameterization for configurability.
  • Write clean, lint-clean, CDC/RDC-clean RTL that follows the coding and quality standards.
  • Write block-level testbenches, sanity checks, and assertions (SVA) for your own blocks before handoff to DV.
  • Power- and timing-aware design — managing block activity, clock-gating, pipelining, and retiming; partner with the backend team on physical closure for your blocks.
  • Bring-up and debug across simulation and emulation / FPGA prototyping; support DV and silicon bring-up, including DFT/debug hooks in your blocks.
  • Collaborate with the architecture, modelling, DV, DFT, and backend teams as your blocks move through the flow.

Requirements

  • BS or MS in Electrical/Computer Engineering (or equivalent experience).
  • 3+ years of digital RTL design in SystemVerilog, with blocks taken from micro-architecture through to verification handoff.
  • Solid digital design fundamentals: pipelining, FSMs, FIFOs, clock-domain crossing, and streaming/bus interfaces (e.g., AXI).
  • Lint and CDC/RDC discipline and clean-RTL practices.
  • Power- and timing-aware design practices; comfort with synthesis and timing closure, working with the backend team.
  • Strong debug skills in simulation; scripting in Python, Perl, or TCL.

Preferred

  • High-speed datapath, SerDes-adjacent, or interface design exposure (UCIe, PCIe/CXL, or similar).
  • FEC/coding datapath familiarity (e.g., Reed-Solomon) and gray-code mapping.
  • Assertion-based verification (SVA) and familiarity with UVM block-level testbenches; emulation / FPGA prototyping experience.
  • Exposure to scale-up / scale-out interconnects or network switch / NIC / memory-controller datapaths.
  • Low-power / UPF and DFT (scan) concepts.
  • Optical transceiver, CPO, or linear-drive optics background; advanced-node (N5/N3/N2) design experience.
Role:
IC/RTL Design Engineer
Job Type:
FullTime

Company profile

lumilens

lumilens.com

Lumilens is a photonics company that builds optical interconnects to scale out and scale up AI compute infrastructure in data centers. Its products range from chip-to-chip optical interconnects to scalable photonic engines, made with custom robotics and AI-optimized production processes. The company ships optical interconnect products to hyperscaler AI data centers under a multi-billion-dollar customer agreement, has announced more than $900M in funding, and is backed by Mayfield. Its leadership team comes from Cisco, Juniper, Meta, Lumentum and Coherent.

Founders
Ankur Singla, Ritesh Kapahi, Samuel Liu, Dave Friedman, Ted Schmidt
Key Investors
Mayfield

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