Principal CAD Evaluation Engineer

Storygold is hiring a Principal CAD Evaluation Engineer to own the end-to-end evaluation of language models performing complex tasks inside parametric CAD systems.

This is not a mechanical-design or generic QA position. The role requires deep knowledge of CAD software internals, strong software-engineering ability, and the technical judgment to design, implement, and run rigorous CAD evaluations.

Responsibilities

• Design benchmark tasks and evaluation protocols for parametric CAD workflows
• Write and refine prompts, tool instructions, scoring criteria, and evaluation rubrics
• Build execution harnesses that operate CAD software through APIs and automation interfaces
• Develop automated validators, graders, regression tests, and diagnostic tools
• Programmatically inspect CAD documents, feature trees, sketches, constraints, assemblies, configurations, references, and rebuild states
• Analyze B-rep topology, geometric validity, tolerances, mass properties, and model structure
• Determine whether failures originate from model reasoning, tool use, CAD automation, feature regeneration, constraint solving, the geometry kernel, or the evaluator itself
• Combine deterministic checks with expert technical review
• Define failure taxonomies and maintain consistent evaluation standards
• Work with CAD task creators and research engineers to improve benchmark quality and coverage

Requirements

• 7+ years of experience developing CAD, CAM, CAE, geometric-modeling, or related engineering software
• Deep understanding of parametric CAD architecture, including:
  • B-rep geometry and topology
  • Feature history, dependency graphs, and regeneration
  • Sketch and assembly constraint systems
  • Geometric tolerances and model validity
  • Boolean operations, intersections, offsets, fillets, and healing
  • Topological naming and reference stability
  • CAD file translation and interoperability
• Strong software-engineering ability in C++ or C#/.NET
• Practical experience with Python for automation, data processing, and evaluation pipelines
• Experience working with CAD APIs, geometry kernels, automated testing, or model-validation systems
• Professional experience with SolidWorks, NX, CATIA, Creo, Onshape, Fusion, Inventor, Solid Edge, or a comparable parametric CAD platform
• Strong debugging, systems-design, and technical communication skills
• English proficiency at B2 level or higher

Preferred Qualifications

• Experience with SolidWorks API or SolidWorks automation
• Experience with Parasolid, ACIS, CGM, Open Cascade, C3D, or another commercial geometry kernel
• Experience developing production CAD software or geometric algorithms
• Experience building technical benchmarks, evaluation systems, automated graders, or test infrastructure
• Experience evaluating systems that use language models and external software tools