Lightmatter

Mixed-Signal Digital Architecture Validation Engineer

Lightmatter$186K — $210K *
Telecommunications & Hardware
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Master's degree in Electrical or Computer Engineering with 7+ years of relevant experience.
  • Expertise in power-efficient digital design for AMS electronics, ideally for photonic channels.
  • Proven history of bringing high-volume silicon products to market, with a clear understanding of the silicon development cycle.
  • Deep understanding of high-speed digital circuit design in analog/photonic environments, including control systems.
  • Strong problem-solving skills for complex, non-obvious issues.
  • Hands-on experience with lab instruments and testing setups.

Responsibilities

  • Own and validate the digital architecture for Lightmatter's Passage product, collaborating with architecture and chip design teams.
  • Influence digital architecture from concept to high-volume production.
  • Validate system-level digital designs, integrating AMS and photonic circuits including drivers and receivers.
  • Collaborate on technological and product roadmap development with product teams.
  • Work with test and validation engineers to ensure hardware aligns with simulations.
  • Coordinate with RTL and DV teams for block-level implementation and verification support.
  • Enable firmware development for hardware validation and bring-up processes.
  • Author and evaluate architectural specifications and testing methodologies.

Benefits

  • Comprehensive Health Care Plan (Medical, Dental & Vision)
  • Retirement Savings Matching Program
  • Life Insurance (Basic, Voluntary & AD&D)
  • Generous Time Off (Vacation, Sick & Public Holidays)
  • Paid Family Leave
  • Short Term & Long Term Disability
  • Training & Development
  • Commuter Benefits
  • Flexible, hybrid workplace model
  • Equity grants (applicable to full-time employees)
Full Job Description
We are hiring a Mixed-Signal Digital Architecture Validation Engineer to partner with the internal engineering team at Lightmatter to deliver groundbreaking products to market. In this role, you will require a solid understanding of Lightmatter products, mixed-signal digital architecture, process technology, chip design, and clear communication skills.

In this role, you will be validating the architecture of the digital circuits that enable a groundbreaking photonic-based communication fabric. Your work will enable not only the low-level AMS/photonic devices but also the necessary interfaces with firmware and software. You will also influence product definition and technological roadmaps, as well as suitable design and verification methodologies.

You will report directly to the Head of Product Validation, but you will also work closely with our digital, analog, photonic, and software teams. We are particularly looking for someone with expertise in architecting digital circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.

Join a tight-knit team where each individual's contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of data center from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.
Responsibilities
  • Own digital architecture validation for Lightmatter's Passage product. Work closely with the rest of the architecture team, chip design team, and the software team.
  • Influence the digital architecture from initial concept through high-volume production.
  • Validate and specify system-level digital designs, integrating complex AMS and photonic circuits. These circuits include high-speed drivers and receivers, SerDes, ADCs/DACs, and photonic modulators and detectors.
  • Collaborate with the product team to develop our future technological and product roadmap.
  • Work closely with test and validation engineers to validate hardware against simulation predictions.
  • Collaborate with the RTL and DV teams to enable block-level implementation and verification, respectively.
  • Enable the firmware team to develop the recipes for hardware bring-up and validation.
  • Author, review, and validate architectural specifications and test methodologies.
  • Identify improvements and potential pitfalls (including mitigation strategies) regarding the execution of the proposed architectures..

Qualifications
  • Master's degree in Electrical Engineering, Computer Engineering, or a related field with 7+ years of relevant experience.
  • In-depth knowledge of power-efficient digital design flows for AMS electronics, preferably on photonic communication channels.
  • Proven track record of delivering successful high-volume silicon to market, and a thorough understanding of the silicon product development flow.
  • In-depth knowledge of digital circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
  • Demonstrated strong problem-solving skills, specifically for problems that do not have obvious solutions.
  • Hands-on experience with lab instruments and test setups.

Preferred Qualifications
  • Understanding of SerDes PCS layer and equalization, along with forward error-correction schemes.
  • Ability and desire to collaborate in a cross-disciplinary team.
  • Power user of development tools, including CAD tools, SPICE simulators, IBIS-AMI simulators, and programming languages (e.g., MATLAB or Python).
  • Understanding of FPGAs and building blocks.


We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Salary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.

$186,000-$210,000 USD

Benefits

  • Comprehensive Health Care Plan (Medical, Dental & Vision)
  • Retirement Savings Matching Program
  • Life Insurance (Basic, Voluntary & AD&D)
  • Generous Time Off (Vacation, Sick & Public Holidays)
  • Paid Family Leave
  • Short Term & Long Term Disability
  • Training & Development
  • Commuter Benefits
  • Flexible, hybrid workplace model
  • Equity grants (applicable to full-time employees)

About Lightmatter

Industry
Founded
2017

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