Principal Software Engineer

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. You will be the primary technical architect for our landmark partnership with a major enterprise partner.

Responsibilities

Lead discovery, architectural design, and adoption of the flagship embedded partner integration; Leverage AI tools to accelerate development of geometry-processing pipelines and collaborate with Data Science team to ensure IQE engine performs with sub-second latency; Tackle complex issues involving deep technical coupling between Xometry's marketplace and partner enterprise software; Lead cross-team decision-making and execute multi-quarter roadmaps; Act as primary technical point of contact for partner engineering teams and mentor senior and mid-level engineers; Own reliability and security of integration microservices

Requirements

8–12+ years of professional software development experience with a proven track record of leading complex, multi-quarter initiatives; Deep experience in Python (backend services, APIs), React/TypeScript (embedded UIs), and AWS cloud infrastructure; Significant experience with system architecture, microservices design, and distributed systems, specifically those involving high-volume data exchange between disparate enterprise ecosystems; A track record of introducing architectural patterns adopted across multiple teams and building enterprise-grade integrations that go beyond simple API wrappers; Bachelor’s in Computer Science, Engineering, or a related field, or equivalent practical experience

Nice to have

CAD/PLM Domain Expertise (Dassault/SolidWorks, Autodesk); 3D Geometry Background (B-Rep, mesh formats); Marketplace Engineering (e-commerce, fintech, B2B); Security Mindset (dedicated-tenant or ring-fenced solutions)

Benefits

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 and other wellbeing resources; bonus; equity