Full-Time

Standard Cell Design Lead

Cell Library Development, Timing Characterization

Substrate

Substrate

11-50 employees

Develops advanced X-ray lithography chipmaking system

Compensation Overview

$150k - $275k/yr

No H1B Sponsorship

San Francisco, CA, USA

In Person

Category
Electrical Engineering (1)
Requirements
  • 10+ years experience in standard cell design, library development and characterization
  • Deep understanding of standard cell architecture, layout, and optimization strategies
  • Strong background in cell characterization and Liberty timing model generation
  • Experience with layout tools (Cadence Virtuoso, Synopsys Custom Compiler, or similar)
  • Proficiency with characterization tools and SPICE simulation for timing/power analysis
  • Proven ability to balance area, performance, and power trade-offs in cell design
Responsibilities
  • Lead standard cell library development including logic gates, flip-flops, and complex cells
  • Optimize cell layouts for power, performance and area across Vth’s and drive strengths
  • Characterize cell library including timing, power, and noise analysis for library models
  • Develop Liberty (.lib) timing files and LEF physical abstractions for EDA tool integration
  • Collaborate with PDK and process teams to ensure cell performance meets targets
  • Implement DFM techniques and validate cells against DRC/LVS rules
  • Support all DFT fault models including cell aware, physical aware, stuck-at and transition
  • Optimize cell architectural requirements including multi-Vt and multi-channel options
  • Lead library validation and qualification across distributed design and fabrication teams
Desired Qualifications
  • Advanced degree in Electrical Engineering or related field
  • Experience with advanced node standard cells or FinFET/GAA library development
  • Background in low-power design techniques and multi-threshold voltage libraries
  • Familiarity with EDA flows and library integration requirements
  • Experience in research-driven or startup semiconductor environments

Substrate is developing a new chipmaking system that uses X-ray lithography powered by a proprietary particle accelerator to pattern circuits on silicon wafers. The technology aims to lower lithography costs by about half and is demonstrated at U.S. National Laboratories and in its own facilities. It differentiates itself by pursuing a more vertically integrated U.S. foundry to reduce reliance on overseas fabrication and strengthen supply-chain resilience. The goal is to produce its first chips by 2028 and help bring advanced AI and robotics chips manufacturing back to the United States.

Company Size

11-50

Company Stage

Late Stage VC

Total Funding

$100M

Headquarters

San Francisco, California

Founded

2022

Simplify Jobs

Simplify's Take

What believers are saying

  • Secured $100M funding at $1B valuation from Founders Fund, General Catalyst.
  • Plans $10K wafers by 2030, halving costs versus EUV systems.
  • Met VP JD Vance in March 2025 to cut U.S. semiconductor costs.

What critics are saying

  • ASML's High-NA EUV scales to 2nm by 2028, outpacing Substrate.
  • Particle accelerators fail high-volume due to G-force instability.
  • CEO Proud's non-expertise repeats Intel's 1990s X-ray failures.

What makes Substrate unique

  • Substrate develops particle accelerator-based X-ray lithography rivaling ASML.
  • Vertically integrated U.S. foundry targets AI and robotics chip production.
  • Completed 300mm wafer tool operating at production G-forces in-house.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

Unlimited Paid Time Off

Flexible Work Hours

Remote Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Hybrid Work Options

Stock Options

401(k) Retirement Plan

Wellness Program

Mental Health Support

Gym Membership

Phone/Internet Stipend

Home Office Stipend

Corporate Social Events

Company News

Financial Times
Oct 28th, 2025
Silicon Valley chip start-up raises $100mn to take on TSMC and ASML

Substrate plans to use particle accelerators to lower cost of chip manufacturing