Principal Software Engineer

<div class="content-intro"><p><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;">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.</span></p></div><p data-path-to-node="5"><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;">Xometry is looking for a Principal Software Engineer to join our Partner Ecosystems team. This team builds the high-performance integration layer that embeds Xometry’s AI-native marketplace directly into the world’s leading CAD and PLM platforms.</span></p> <p data-path-to-node="6"><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;">You will be the primary technical architect for our landmark partnership with a major enterprise partner. This is not a standard plug-in project; you will be responsible for extracting Xometry’s core AI engines (DFM and IQE) and natively embedding them into our partner's core digital ecosystems. Your work will enable a "science fiction speed" workflow where designers receive real-time manufacturability and pricing feedback on native 3D geometry without ever leaving their primary design environment.</span></p> <p data-path-to-node="7"><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;">This role requires a hybrid schedule (3 days a week) at our North Bethesda, MD or Waltham, MA office location.</span></p> <h2 data-path-to-node="9"><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;">How You'll Contribute</span></h2> <ul data-path-to-node="10"> <li style="font-size: 10pt; font-family: arial, helvetica, sans-serif;"> <p data-path-to-node="10,0,0"><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;"><strong data-path-to-node="10,0,0" data-index-in-node="0">Software Development and Technical Craft:</strong> You will lead the discovery, architectural design, and adoption of our flagship embedded partner integration. You'll introduce best practices for handling native 3D geometry data flows and ensure our systems are extensible, scalable, and capable of delivering real-time AI insights at the moment of design.</span></p> </li> <li style="font-size: 10pt; font-family: arial, helvetica, sans-serif;"> <p data-path-to-node="10,1,0"><span style="font-size: 10pt; font-fa