Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.
Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!
If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.
Lightmatter is (re)inventing the future of computing with light!
In this role, you will be a key member of the analog team architecting the world's first photonic computers. This is fundamentally an interdisciplinary team, and outside-the-box thinking is the daily norm. You will need both deep expertise in mixed-signal and analog design and breadth across other engineering disciplines, such as photonics and digital electronics, semiconductor device physics, thermal/packaging, and machine learning. The successful candidate will demonstrate an eagerness to refresh and grow their competency in these areas.
*We are currently hiring for multiple levels for this role. Your level and compensation will be determined by your experience, education, and location.
Responsibilities
- Support micro-architecture development with chip architects by conducting feasibility studies
- Collaborate with members of our design engineering teams (system, digital, analog, photonics) to define electrical requirements
- Design analog/mixed-signal blocks with a focus on transceivers (TIA, TX Driver) and broadband circuits interfacing with silicon photonics elements
- Document design simulations and verifications towards formal design reviews
- Drive block-level floorplan, mask design views, and their reviews
- Run post-layout and mixed-signal top-level simulations to validate integration
- Define production and bench-level test plans
- Validate performances of the circuits in the lab
Required Qulifications
- MS with 3+ years of industry experience, OR Ph.D. with 5+ years of industry experience with a focus on optical or wireline transceiver design
- Experience designing Analog-Front-End blocks such as trans-impedance amplifiers (TIA) and Tx Driver
- Experience with Tx/Rx equalization techniques and circuits
- Experience with testing and validating high-speed analog/mixed-signal circuits
- Familiarity with SERDES architectures, and implementations
- Solid understanding of CMOS device characteristics, noise, mismatch, linearity, and design trade-offs
- Experience with Cadence Design Environment
Preferred Qualifications
- Knowledge of 3D Electro-Magnetic (EM) simulation tools is a plus
- Experience interfacing with silicon photonic Mach-Zehnder modulators is a plus
- Successful track record in delivering analog/mixed-signal IPs with 1st-time success while meeting tight schedules
- Ability to work collaboratively with people across multiple functional areas
- 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
- Stock Option Plan
Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.
Top Skills
What We Do
Lightmatter is a startup photonics company that has pioneered a new paradigm in processor chip architecture that uses photons instead of electrons. Now the leader in the photonic AI compute “space race,” this new class of high performance semiconductors is the foundation of Lightmatter’s mission to enable the growth of computing, reduce harmful emissions associated with this growth, and democratize computing for all.
Lightmatter's technology accelerates critical operations in deep neural networks, using an array of programmable photonic elements fabricated alongside transistors in conventional computer chip fabrication processes. Our close-knit team of engineers has created an integrated photonics chip and ultra-high performance interconnect that is faster, more efficient, and cooler than anything else on earth (or anything ever experienced before) to power the next giant leaps in human progress.
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