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. Xometrys 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 metaladditive injection molding casting and finishing processes. This role also serves as the technical architect for one of Xometrys highest-leverage strategicinitiatives: the embedded DFM AI IQE integration with our partner. You will lead the integration of Xometrys proprietary computational geometry and AI directly into the partners 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 ofquotes 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 XT JT SLDPRT CATPart and DXF at scale.

Responsibilities

• Technical Vision & Roadmap: Own and drive a multi-year technical roadmap for Xometrys 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 partners ecosystem. Lead the integration of Xometrys 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 andthe 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 precisionrobustness 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 computational fabrication into shippedsystems. Publish patent or open-source where doing so strengthens recruiting partnerships or the platform itself.
• Technical Leadership & Standards: Provide technical leadership across geometry ML and platform teams. Lead design reviews define the technical interview bar and partner with engineering leadership on hiring calibration and IC-track career progression. Mentor Staff Senior and mid-level engineers.
• Cross-Functional Leadership: Partner with Product Manufacturing Engineering Pricing and Operations leadership to translate business outcomes (margin lead time yield defect rate) into precisely specified geometric and algorithmic problems. Influence roadmaps priorities and resourcing across partner teams.
• External Representation: Represent Xometry externally conferences standards bodies academic collaborations technical reviews and customer engagements as the recognized technical authority for our DFM and geometry platform.

What Youll Bring to Xometry

• Experience & Education: M.S. or PhD in applied mathematics computer science mechanical engineering computational physics or a closely related field. Typically 12 years of progressive experience applying computational methods to geometry CAD/CAE or simulation problems with a demonstrable record of shipped algorithms in commercial or production systems. PhD with 8 years of relevant industry experience is equivalent.
• Geometric Modeling Mastery: Deep expertise across the geometric modeling stack analytical geometry parametric and free-form geometry (NURBS etc.) trimmed surfaces B-Rep topology geometry healing and repair robust predicates and high-performance spatial data structures.
• Kernel & CAD Interoperability: Hands-on experience with one or more commercial or open geometric kernels Parasolid ACIS CGM Granite ShapeManager Open CASCADE / pythonOCC including a working understanding of where each kernel fails on real-world inputs and how to compensate. Strong working knowledge of CAD interchange and translation: STEP (AP203/AP214/AP242) IGES JT Parasolid XT native CATIA / NX / Creo / SolidWorks formats DXF and HOOPS Exchange / PRC.
• Technical Mastery: Expert-level C (C14/17/20) with modern build systems (CMake) debugging (GDB sanitizers) profiling and binding generation (SWIG pybind11). Strong Python for tooling prototyping and ML integration. Comfort with cloud platforms (AWS) for large-scale geometry processing and model training. Experiences or exposures of using code generation tools (e.g. Claude) with geometry engines. Ability to work in a large computational geometry codebase involving C and Python (numpy numba) code.
• Mathematical Rigor: Rigorous grounding in linear algebra multivariable and differential calculus numerical methods differential equations and floating-point error analysis. Comfort with differential geometry and topology as it applies to surface and curve modeling.
• Recognized Track Record: Demonstrable record of research-to-production translation: peer-reviewed publications issued patents significant open-source contributions or shipped commercial capabilities that you can point to and explain end-to-end.
• AI/ML Fluency: Familiarity with ML/AI methods relevant to geometry graph neural networks on B-Reps (BRepGAT BRepFormer AAGNet UV-Net) point-cloud / voxel / SDF encoders neural implicit representations NURBS-aware learning and clear judgment about when classical methods beat learned ones.
• Manufacturing Domain Fluency: Familiarity with industry standards (ISO ASME Y14.5 GD&T) and a working command of manufacturing processes (subtractive additive formative finishing) and materials science sufficient to converse credibly with senior manufacturing engineers and partner engineers.
• Leadership: Track record of mentoring and elevating Staff- and Senior-level engineers. Able to set technical direction by influence rather than mandate and to align executives and cross-functional partners around ambitious scientific directions.
• ITAR Compliance: Must be a US Citizen or Green Card holder (ITAR).

Qualifications

• Partner Ecosystem Experience: Prior development experience inside the partnersstack Parasolid kernel programming NX Open / NX Customization Solid Edge APITeamcenter integration or Designcenter / Mendix-based workflow development.
• Published Research: PhD with a published thesis or sustained publication record incomputational geometry geometric modeling computer-aided geometric design(CAGD) computational fabrication isogeometric analysis or computational dynamics.
• Open-Source Authorship: Authorship of or substantial contribution to a recognizedopen-source geometric modeling library kernel or framework (e.g. NURBS / B-spline
  modeling frameworks mesh generation toolkits CAD interoperability libraries).
• Industry Pedigree: Experience inside a CAD vendor kernel vendor simulation vendoror vertically integrated manufacturing platform Dassault Systèmes PTC AutodeskOnshape Shapr3D ANSYS Altair Desktop Metal Markforged Align TechnologyConforMIS or comparable.
• Scale: Designed and operated geometry algorithms at large scale cloud computedistributed geometry processing GPU-accelerated computational geometry parallelmeshing or geometry serving behind a real-time API.
• Hiring & Calibration: Experience hiring calibrating and growing computational-geometry talent a domain where the global talent pool is small and the hiring bar is notoriously difficult to set.

What Success Looks Like in 12 Months

• The Partner DFM AI IQE integration is in production inside the partners ecosystem with measurable adoption in-CAD latency contracts being met and a clear roadmap forexpanding the digital thread across additional processes and partner surfaces.
• The geometric reasoning stack has a coherent documented architecture with explicitprecision robustness and latency contracts; new sub-processes and DFM rules plug inwithout bespoke rewrites.
• DFM coverage spans 12 CNC sub-processes plus the broader process catalog withper-sub-process precision/recall measured and on a known improvement trajectory.
• At least one piece of methodology has been published patented or open-sourced in away that strengthens Xometrys recruiting and external technical brand.
• Two to three Staff and Senior engineers can credibly cite you as the reason they leveled up.

The estimated base salary range for new hires into this role is $200000-$230000.00 annually commission depending on factors such as job-related skills relevant experience and location. We also offer a competitive benefits package including 401(k) match medical dental and vision insurance; life and disability insurance; generous paid time off including vacation sick leave floating and fixed holidays maternity and bonding leave; EAP other wellbeing resources; and much more.

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Xometry is an equal opportunity employer. All applicants will be considered for employment without attention to race color religion sex sexual orientation gender identity national origin veteran or disability status.

For US based roles: Xometry participates in E-Verify and after a job offer is accepted will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.