Principal Computational Engineer, 3D CAD & Geometric Intelligence

Xometry (NASDAQ: XMTR) powers the industries of today and tomorrow by connecting the people with big ideas to the manufacturers who can bring them to life. Xometry’s digital marketplace gives manufacturers the critical resources they need to grow their business while also making it easy for buyers at Fortune 1000 companies to tap into global manufacturing capacity. Xometry is seeking a Principal Computational Engineer to set the multi-year technical direction for our 3D geometry and Design for Manufacturability (DFM) platform. You will be the senior individual contributor in this domain, owning the architecture that turns every customer-uploaded CAD model into a manufacturable, priced, and routed part across CNC, sheet metal, additive, injection molding, casting, and finishing processes. This role also serves as the technical architect for one of Xometry's highest-leverage strategic initiatives: the embedded DFM AI + IQE integration with our partner. You will lead the integration of Xometry's proprietary computational geometry and AI directly into the partner's industrial software ecosystem — including Solid Edge, NX, Designcenter, and Teamcenter — integrated within the native DesignCenter environment to deliver real-time manufacturability feedback and pricing insights. The goal is a "science fiction speed" design-to-source digital thread from ideation to physical parts, with no export, no round-trip, and no translation loss. This is a hands-on role. You will write production C++ and Python that ships to millions of quotes per year, define the kernel and toolchain strategy, publish or patent novel methods where they create durable advantage, and raise the technical bar of the team through mentorship, design review, and hiring. The role requires demonstrated mastery of computational geometry, geometric modeling kernels, and the messy reality of consuming arbitrary customer CAD — STEP, IGES, X_T, JT, SLDPRT, CATPart, and DXF — at scale. Responsibilities Technical Vision & Roadmap: Own and drive a multi-year technical roadmap for Xometry's geometric reasoning stack — B-Rep ingestion and healing, feature recognition, DFM analysis, sub-process routing, geometric pricing signals, and downstream CAM/CAE integration — balancing research ambition with disciplined business value delivery. Partnership Integration (DFM AI + IQE): Serve as the technical architect for the embedded DFM AI + IQE track inside the partner's ecosystem. Lead the integration of Xometry's geometric and AI capabilities directly into Solid Edge, NX, Designcenter, and Teamcenter, operating directly on native 3D geometry through the Parasolid kernel. Define the integration architecture, the geometry contract between the two systems, the precision and latency budgets required for in-CAD real-time feedback, and the long-term roadmap for an end-to-end digital thread from designer intent to manufactured part. Geometric Kernel Architecture: Architect and personally implement the hardest components of the geometric kernel layer — robust intersection, offset, Boolean, projection, and trimming operations on NURBS curves and surfaces — plus the resilience layer that absorbs malformed CAD that arrives in the wild. Establish precision, robustness, and performance contracts (floating-point error budgets, predicate selection, tolerancing, numerical stability) that the rest of engineering builds on top of. DFM & Sub-Process Intelligence: Drive the methodology for combining classical computational geometry (B-Rep traversal, parametric surface analysis, medial axis, geodesic distance, curvature analysis) with modern learning-based approaches (graph neural networks on B-Reps, point-cloud and voxel encoders, differentiable geometry, neural implicit representations) to detect manufacturability risk across 12+ CNC sub-processes and the broader process catalog. Research-to-Production Translation: Translate research from computational geometry, computer-aided geometric design, and computati