CAD Automation Engineer: AI-Driven 3D Design Pipelines

Subcritical Systems Inc; Austin (TX); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Health insurance

Job summary

Subcritical Systems Inc. seeks a core contributor for a five-person engineering team focused on CAD automation tooling that accelerates the design-to-construction pipeline.

You will integrate AI tools, solve geometry and data-modeling challenges, and own major portions of the software stack end-to-end. In this role you will design automation pipelines that engineers rely on daily and help ensure construction schedules stay on track.

Qualifications

• Strong software engineering fundamentals: Python and/or TypeScript, clean architecture, version control, testing.
• Hands-on experience integrating frontier AI models into production workflows: model APIs, agentic systems (LangChain, LangGraph, or similar).
• Experience building tools used by domain experts (engineers, scientists, designers).
• Comfort working with geometry, spatial data, or engineering file formats (CAD, STEP, mesh).
• Track record of shipping in resource-constrained environments (startup, early-stage team).
• Excellent communication with non-software collaborators.
• High agency: identify problems, propose solutions, and execute without a detailed spec.

Responsibilities

• Develop and maintain our in-house CAD automation pipeline, part of the ATLAS platform, generating parametric 3D assemblies.
• Build interfaces between the design toolchain and standard engineering formats (STEP, IGES).
• Automate physics simulation workflows: Monte Carlo neutronics, EM solvers, thermal analysis, parameter sweeps.
• Own core pieces of ATLAS: orchestration, retrieval, tool gateways, evaluation and tracing for reliability.
• Build the design task management layer linking engineering tasks to the master construction schedule.
• Contribute to internal tooling: VCS for design artifacts, validation, and documentation generation.
• Collaborate daily with mechanical designers and nuclear engineers to translate constraints into software.

Skills

Python/TypeScript

AI model integration

Domain expert tooling

Geometry/Spatial data

Startup experience

Communication

High agency

Tools

OpenCascade

FreeCAD

Fusion 360

SolidWorks

Job description

Subcritical Systems Inc. seeks a core contributor for a five-person engineering team focused on CAD automation tooling that accelerates the design-to-construction pipeline.

You will integrate AI tools, solve geometry and data-modeling challenges, and own major portions of the software stack end-to-end. In this role you will design automation pipelines that engineers rely on daily and help ensure construction schedules stay on track.