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Substrate

Develops advanced X-ray lithography chipmaking system

Mechanical Engineer

Design EngineeringConfirmed live in the last 24 hours
Full-timeSan Francisco, CA, USA$150k - $275k

About the Job

Requirements

  • At least 6 years of hands-on mechanical engineering experience, including at least 3 years in precision manufacturing or research environments at technology companies.
  • Expert-level computer-aided design (CAD) experience with complex precision assembly design and ultra-high-vacuum-compatible components.
  • Direct experience with finite element analysis (FEA) for stress and strain calculations in high-acceleration mechatronic applications.
  • Strong background in vacuum technology, ultra-high-vacuum system design, and vacuum-compatible materials.
  • Experience collaborating cross-functionally in support of autonomous technical contributors.
  • Experience building precision mechanical systems from concept through production in scaling technology environments.
  • A bachelor's degree in Mechanical Engineering or a related technical field.

Responsibilities

  • Design and analyze ultra-high-vacuum-compatible mechanical systems, components, and assemblies for production facilities across distributed operational environments.
  • Develop nanometer-precision mechatronic systems for high-speed, high-acceleration applications.
  • Conduct structural analysis, vibration and thermal modeling, and finite element stress and strain calculations for high-acceleration mechatronic systems deployed in multiple locations.
  • Design vacuum-compatible mechanical assemblies and wafer-handling robotics supporting autonomous production workstreams.
  • Build and execute testing protocols for ultra-high-vacuum validation, precision measurement, and performance characterization for field deployments.
  • Collaborate with electrical engineers and software teams on integrated mechatronic system design across parallel technical contributions.
  • Implement vibration damping techniques and precision isolation systems for distributed production environments.
  • Lead technical troubleshooting and root cause analysis for mechanical failures across multiple installation sites.
  • Develop manufacturing processes and work directly with specialized vendors for precision components and vacuum-compatible materials.
  • Support external site installations and provide technical guidance for ultra-high-vacuum production facility deployments.
  • Drive continuous improvement initiatives for precision mechanical systems across organizational structures.

Desired Qualifications

  • Basic knowledge or experience with semiconductor wafer-handling robotics or equipment.
  • Experience supporting scientists and researchers in autonomous technical environments with fluid organizational structures.
  • Experience with nanometer-precision actuators, motors, and positioning systems.
  • Hands-on experience with vibration damping techniques for high-precision mechanical systems.
  • Background in national laboratories, semiconductor equipment, or custom vacuum system design companies.

About the Company

Substrate

Develops advanced X-ray lithography chipmaking system

Substrate develops a new chipmaking platform that uses advanced X-ray lithography powered by a proprietary particle accelerator to pattern circuitry on silicon wafers, with the aim of building a vertically integrated U.S. foundry. The technology claims to cut lithography costs roughly in half and has been demonstrated at national laboratories and its own facilities, with first chips targeted for 2028. Unlike traditional suppliers, Substrate pursues domestic production to reduce reliance on overseas fabs and focuses on cost-efficient, leading-edge wafers for AI and robotics. Its goal is to restore U.S. leadership in advanced semiconductor manufacturing and improve supply‑chain resilience by offering a domestic, cost-effective path to making high-end chips.

Company size
11-50
Company stage
Late Stage VC
Total funding
$100M
Headquarters
San Francisco, CA
Founded
2022

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