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Lumilens

Photonic interconnects for AI infrastructure

IC/RTL Design Engineer - Front-End Engineer

Silicon & ASIC DesignConfirmed live in the last 24 hours
Full-timeSan Jose, CA, USANo salary listedIn-person

About the Job

Requirements

  • A Bachelor’s or Master’s degree in Electrical Engineering or Computer Engineering, or equivalent experience.
  • At least 3 years of digital RTL design experience in SystemVerilog, taking blocks from micro-architecture through verification handoff.
  • Solid digital design fundamentals, including pipelining, finite-state machines, FIFOs, clock-domain crossing, and streaming or bus interfaces such as AXI.
  • Experience with lint and clock-domain crossing or reset-domain crossing discipline and clean-RTL practices.
  • Experience with power- and timing-aware design, synthesis, and timing closure, including collaboration with the backend team.
  • Strong simulation debugging skills and scripting experience in Python, Perl, or Tcl.

Responsibilities

  • Develop block-level micro-architecture for assigned blocks and contribute to interface and register definitions.
  • Design and implement front-end RTL blocks in SystemVerilog, including datapath elements, the UCIe streaming/RDI adapter, elastic FIFOs, and supporting logic.
  • Integrate intellectual property and support parameterization for configurability.
  • Write lint-clean and CDC/RDC-clean RTL that follows coding and quality standards.
  • Write block-level testbenches, sanity checks, and SystemVerilog Assertions for assigned blocks before handoff to design verification.
  • Perform power- and timing-aware design by managing block activity, clock-gating, pipelining, and retiming, and partner with the backend team on physical closure.
  • Bring up and debug designs across simulation and emulation or FPGA prototyping, and support design verification and silicon bring-up, including DFT/debug hooks.
  • Collaborate with architecture, modeling, design verification, design-for-test, and backend teams as blocks move through the design flow.

Desired Qualifications

  • High-speed datapath, SerDes-adjacent, or interface design exposure, including UCIe, PCIe/CXL, or similar technologies.
  • FEC or coding datapath familiarity, such as Reed-Solomon, and gray-code mapping.
  • Assertion-based verification using SVA and familiarity with UVM block-level testbenches, plus emulation or FPGA prototyping experience.
  • Exposure to scale-up or scale-out interconnects, network switch, NIC, or memory-controller datapaths.
  • Knowledge of low-power design, UPF, and DFT scan concepts.
  • Optical transceiver, CPO, or linear-drive optics background, and advanced-node design experience such as N5, N3, or N2.

About the Company

Lumilens

Photonic interconnects for AI infrastructure

Lumilens designs and manufactures optical interconnect products to accelerate AI infrastructure. It provides high-density photonic interconnects—such as high-density pluggable, near-packaged, and co-packaged optics—built with in-house silicon photonics to scale GPU clusters in AI data centers. Its products include 800G and 1.6T optical transceivers for AI networking, and it is pursuing broader integration like Electrical-Optical Interposers through a strategic partnership with POET Technologies. The company differentiates itself through vertical integration, custom robotics-driven manufacturing, and AI-optimized production processes that aim to improve yield and supply chain stability. Lumilens targets hyperscalers and large AI providers, seeking to move interconnect bottlenecks from compute to scalable, efficient data-center networks. Its goal is to enable faster, denser GPU connectivity to support growing AI workloads and models.

Company size
51-200
Company stage
Series C
Total funding
$839.5M
Headquarters
San Jose, CA
Founded
2024

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