About Celestial AI
As the industry strives to meet the demands of the AI workloads, bottlenecks in data transfers between processors and memory have hindered progress. The Photonic Fabric based Memory Fabric provides an optically scalable solution to the ‘Memory Wall’ problem, enabling tens of Terabytes of memory capacity at full HBM bandwidths with low tens of nanoseconds of latency and extremely low power. The Photonic Fabric based Compute Fabric enables Terabyte class bandwidth between compute nodes at low latency and power. Photonic Fabric delivers a transformative leap in AI system performance, ten years more advanced than existing technologies.
Job Description:
Celestial AI is seeking an SI/PI Engineer to help develop and validate Celestial’s world-class energy efficient AI compute and photonic data transmission solutions. Self-starter who is passionate about innovation and comfortable working on the cutting edge of VLSI / RF / Optical Networking technology. The ideal candidate will be comfortable solving the technical challenges of 2.5d die / package / PCB performance optimization and develop a design -> simulate -> correlate development process for package and PCB level interconnect and power delivery. Has a strong sense of ownership, loves turning ambiguity into real outcomes and working across all engineering and product functions to deliver required solutions in a timely manner.
In this role, you will work closely with engineers responsible for analog I/O design, die physical design, photonics, packaging, PCB, and validation. You will be responsible for performing simulations and design studies and reviewing PCB, Package, and silicon layouts to ensure Celestial AI test articles and end products meet appropriate SI/PI targets while taking into account cost-effectiveness, time to market, supply chain risk, and performance tradeoffs. Additional responsibilities include resolving SI/PI issues encountered on the path to high volume manufacturing during the NPI phase and developing technology roadmaps to support the overall company product roadmap. This job will require you to have strong project management, written and verbal communication skills as well as a can-do attitude to prioritize and address issues with a very high sense of urgency.
ESSENTIAL DUTIES AND RESPONSIBILITIES:
- Use electromagnetic simulation software such as Ansys HFSS / SiWave or Cadence Sigrity Suite to perform pre and post layout simulations
- Use layout software such as Cadence Allegro/APD viewers, Virtuoso, Klayout, etc. to review designs and modify designs for simulation
- Use Real Time Oscilloscopes, Sampling Oscilloscopes, TDR, and VNA to verify performance, correlate models to simulation, and debug issues
- Develop strong technical relationships within the company and externally with customers and vendors as a single point of contact for SI/PI design and manufacturing problems
- Collaborate with industry peers and suppliers to stay abreast of industry advances and future roadmaps
- Resolve daily technical issues with cross-functional engineering teams in a timely manner and drive for Celestial AI’s success
- Actively manage SI/PI qualification of test articles and products, while operating within established cost and time constraints
QUALIFICATIONS:
- Master’s degree or higher in Electrical Engineering or RF is preferred but not required
- 5+ years of experience in signal/power integrity
- Expertise with time and frequency domain simulation and measurement
- Prior experience with high speed serdes and power delivery modelling/optimization
- Experience with Photonics is a plus
- Ability to deliver effective results in collaborative cross-functional teams in a fast paced startup environment
Location: Bay Area location is required.
For California location:
As an early startup experiencing explosive growth, we offer an extremely attractive total compensation package, inclusive of competitive base salary and a generous grant of our valuable early-stage equity. The target base salary for this role is approximately $160,000.00 - $185,000.00. The base salary offered may be slightly higher or lower than the target base salary, based on the final scope as determined by the depth of the experience and skills demonstrated by candidate in the interviews.
We offer great benefits (health, vision, dental and life insurance), collaborative and continuous learning work environment, where you will get a chance to work with smart and dedicated people engaged in developing the next generation architecture for high performance computing.
Celestial AI Inc. is proud to be an equal opportunity workplace and is an affirmative action employer.
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Top Skills
What We Do
Celestial AI is a Machine Learning (ML) accelerator company that has developed a proprietary technology platform which enables the next generation of high-performance computing solutions. Celestial AI’s mission is to transform data parallel computing with a proprietary Photonic Fabric™ technology platform which uses light for data movement both within chip and between chips.
Advancements in data communications have driven robust silicon photonics technology and volume manufacturing ecosystems that are ripe for commercial implementation of ML and high-performance computing (HPC) solutions which leverage integrated silicon photonics for data movement.
Celestial AI’s system delivers differentiated single node performance that scales efficiently, providing significant performance gains for multi-node and multi model applications. The scalability of Celestial AI’s accelerator architecture enables an efficient and performant mapping of data and compute over a broad range of ML model types without the need for complex software optimizations. Celestial AI’s competitive advantage will further grow over time as ML models continue to increase in complexity and size.
Celestial AI has assembled a highly experienced team of industry leaders who have a track record of building multiple successful technology businesses. The company’s Orion AI accelerator products serve an addressable market that is projected by Omida to exceed $70 billion in 2025
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