Physical Design Engineer at Celestial AI

Santa Clara, California, United States

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

Semiconductors, AI HardwareIndustries

Requirements

Bachelor's degree in Electrical or Computer Engineering (advanced degree preferred)
Minimum of 5 years of industry experience in physical design
Strong background in physical design & physical design methodologies for both SOC level and block level
Experience with floorplanning, hard IP integration, power distribution, Multi-Supply, Multi-Vt, Clock Tree Synthesis
Experience with timing budgeting, optimization, and timing closure of high-speed designs
Experience with deep technology nodes such as 5nm/4nm (highly valued, preferably TSMC N5)
Knowledge and hands-on experience with physical design methodologies and implementation
Proficiency in relevant EDA physical design and verification tools (e.g., Cadence Innovus, Tempus, Quantus, Voltus, Pegasus) and scripting languages (e.g., Tcl, Perl)
Experience with custom IP integration
Strong understanding of physical design and timing optimization techniques and strategies to achieve physical design and timing closure
Proven track record of delivering successful designs on time and meeting performance, power, and area goals
Excellent problem-solving skills and ability to analyze and debug complex physical design issues
Strong communication and collaboration skills to work effectively within cross-functional teams
Experience with complex clock tree synthesis (preferred)
Knowledge of low-power UPF based techniques (preferred)

Responsibilities

Develop and implement high-performance, low-power, area efficient physical design for SOC and block level designs using industry standard EDA tools
Work closely with digital and analog design teams to understand design requirements and constraints to implement physical design
Contribute to physical design flow development
Resolve or find workarounds for tool issues, independently or working with EDA tool vendors
Work closely with synthesis team to provide feedback on design feasibility, constraints, timing, power, placement, and routing issues
Perform physical verification, STA, EM & IR Drop analysis

Skills

Key technologies and capabilities for this role

Physical DesignFloorplanningHard IP IntegrationPower DistributionSOC DesignBlock Design

Questions & Answers

Common questions about this position

What salary or compensation does this role offer?

This information is not specified in the job description.

Is this Physical Design Engineer position remote or onsite?

This information is not specified in the job description.

What skills and experience are required for the Physical Design Engineer role?

The role requires strong background in physical design methodologies for SOC and block level, including floorplanning, hard IP integration, power distribution, Multi-Supply, Multi-Vt, Clock Tree Synthesis, timing budgeting, optimization, and timing closure of high-speed designs. Experience with deep technology nodes such as 5nm/4nm is highly valued. Proficiency with industry standard EDA tools for developing high-performance, low-power, area-efficient designs is essential.

What is the company culture like at Celestial AI?

This information is not specified in the job description.

What qualifications make a strong candidate for this Physical Design Engineer position?

A Bachelor's degree in Electrical or Computer Engineering (advanced degree preferred) combined with hands-on experience in SOC/block-level physical design, high-speed timing closure, and deep nodes like 5nm/4nm. Strong collaboration skills with digital/analog and synthesis teams, plus ability to develop physical design flows and perform verification including STA, EM, and IR drop analysis.

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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