PIC Design Engineer at Celestial AI

Santa Clara, California, United States

Celestial AI Logo
Not SpecifiedCompensation
Mid-level (3 to 4 years), Senior (5 to 8 years)Experience Level
Full TimeJob Type
UnknownVisa
Semiconductors, Photonics, AI HardwareIndustries

Requirements

  • Good grasp of fundamental photonics concepts and engineering design principles
  • Experience with Silicon Photonics Process Design Kits and related best practices in the layout of photonic devices, sub-systems and full PICs
  • Experience with physical design packages (Cadence, Siemens Mentor, Klayout or similar), including layout automation within these tools using SKILL, Python or similar
  • Experience with layout verification tools for DRC, ERC and LVS (Calibre, Pegasus or similar)
  • Familiarity with SI and PI-aware electrical routing for analog and digital blocks (strong plus)
  • PhD in engineering or physics with concentration/experience in integrated photonics
  • Self-starter
  • Creativity in problem-solving with strong attention to detail
  • Thrives in a highly collaborative and dynamic work environment
  • Excellent oral and written communication skills

Responsibilities

  • Contribute to the design and layout of very large-scale Silicon Photonic ICs (PICs) that interface directly with co-designed ASICs
  • Contribute to PIC delivery, all the way from floor-planning and top-level block placement to micro-architecture, optical & electrical routing, and back-end DRC and LVS verification
  • Work in conjunction with broader analog, digital and packaging teams to drive PIC physical design in accordance with product requirements related to opto-electronic performance, signal integrity (SI) & power integrity (PI)
  • Work closely with the rest of the Photonics team to optimize layout flows and add to existing software base for automated design and verification

Skills

Silicon Photonics
PIC Design
IC Layout
Silicon Photonic ICs
ASIC Integration
TSMC
Optical Interfaces
Chiplets
Optical Interposers
2.5D Packaging
Photonic Fabric

Celestial AI

Optical interconnects for high-performance computing

About Celestial AI

Celestial AI focuses on high-performance computing for hyperscale data centers with its technology called Photonic Fabric™, an optical compute interconnect. This technology reduces DRAM requirements by up to 35% and lowers power consumption while increasing bandwidth capacity, which is essential for multi-tenant cloud environments. Additionally, it allows for the disaggregation of High Bandwidth Memory (HBM) using optics instead of traditional connections. The goal is to provide optical connectivity that supports advancements in Generative AI and complex workloads.

Sunnyvale, CaliforniaHeadquarters
2020Year Founded
$329.6MTotal Funding
SERIES_CCompany Stage
Data & Analytics, Hardware, AI & Machine LearningIndustries
51-200Employees

Benefits

Health Insurance
Vision Insurance
Dental Insurance
Life Insurance
Company Equity

Risks

Emerging competition from companies like Lightmatter and Ayar Labs.
Potential integration challenges with existing data center infrastructure.
Dependency on limited suppliers for photonic components poses supply chain risks.

Differentiation

Celestial AI's Photonic Fabric™ offers unique optical compute interconnect technology.
The company reduces DRAM requirements by up to 35%, saving billions annually.
Celestial AI enables disaggregation of HBM over optics, enhancing bandwidth capacity.

Upsides

Acquisition of Rockley Photonics' IP strengthens Celestial AI's competitive position.
$175 million Series C funding supports further innovation and market expansion.
Growing demand for energy-efficient solutions aligns with Celestial AI's sustainable focus.

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