Senior Software Engineer

About the Role

Xometry is looking for a Staff Software Engineer to join our Core Platform team. This role is a strategic technical leadership position focused on the architectural evolution of our flagship enterprise partnership.

While our current plug-ins function as external add-ons, you will be responsible for re-architecting Xometry’s core application services to live natively within our partner's digital ecosystem. You will shape the technical direction of multiple products, establishing the engineering patterns that allow Xometry’s AI—trained on millions of parts—to operate directly on our partner's native 3D geometry. Your goal is to move the architectural framework toward a "target state" where users experience zero-latency DFM feedback and one-click procurement without ever leaving their primary enterprise design environment.

This role requires a hybrid schedule (3 days a week) at our North Bethesda, MD or Waltham, MA office location.

How You'll Contribute

• Software Development and Technical Craft: Design high-performance solutions extending beyond a single org, establishing organizational standards for embedding Xometry-AI into external PLM environments. Advance architectural frameworks to ensure extensibility, scalability, and adherence to strict enterprise SLIs/SLOs.
• AI Fluency: Lead efforts to integrate production ML pipelines into the application layer for optimized model serving and real-time geometry analysis. Champion AI-assisted development practices and mentor engineers.
• Problem Solving and Decision Making: Solve challenges regarding data gravity and security. Build formal networks between partner and Xometry engineering groups for ring-fenced data governance.
• Scope and Impact: Establish strategic direction and lead the execution of core integrations, ensuring integration of DFM and IQE AI engines creates a defensible edge.
• Collaboration and Communication: Facilitate technical discourse across Xometry, lead durable decision-making, and guide risk/reward conversations with senior leadership.
• Operational Excellence: Define reliability and security standards for enterprise-grade deployments and ensure seamless multi-tenant management.

Qualifications

Required

• 12+ years of professional software development experience, scaling complex platforms.
• Expert-level mastery of Python, AWS infrastructure, and modern frontend frameworks (React/Next.js) for enterprise applications.
• Proven experience as a Systems Architect shaping technical direction across multiple teams and setting engineering patterns.
• Track record of securing endorsement for 6-12 month initiatives and driving them to production.
• Proven ability to influence senior leadership and external partners on technical strategy.
• Bachelor’s in Computer Science or related field, or equivalent experience.

Preferred

• Background in building SaaS platforms or complex B2B integration hubs.
• Experience with manufacturing, logistics, or CAD/PLM software ecosystems.
• Deep understanding of enterprise data controls, dedicated tenants, and SOC2/ISO compliance in cloud environments.
• Experience architecting large-scale ML platforms or high-frequency marketplace engines.