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