Principal Software Engineer

Xometry is looking for a Principal Software Engineer to join the Partner Ecosystems team. This team builds the high-performance integration layer that embeds Xometry's AI-native marketplace directly into leading CAD and PLM platforms.

You will be the primary technical architect for a major enterprise partnership, responsible for embedding Xometry's AI engines into partner ecosystems. The role focuses on enabling real-time manufacturability and pricing feedback on native 3D geometry within design environments.

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

How You'll Contribute

Software Development and Technical Craft

• Lead the discovery, architectural design, and adoption of the embedded partner integration
• Introduce best practices for native 3D geometry data flows
• Ensure systems are extensible, scalable, and capable of delivering real-time AI insights

AI Fluency

• Use AI tools to accelerate development of geometry-processing pipelines
• Collaborate with the Data Science team to optimize the Instant Quoting engine for sub-second latency
• Define and promote AI fluency standards across engineering teams
• Coach Staff and Senior engineers on integrating AI tooling into workflows

Problem Solving and Decision Making

• Solve complex integration challenges between marketplace systems and enterprise software environments
• Select methods for ring-fenced data governance and secure order placement

Scope and Impact

• Lead cross-team decision-making and execute multi-quarter roadmaps
• Drive deep native integrations eliminating the need for design file exports

Collaboration and Communication

• Act as the primary technical contact for partner engineering teams
• Mentor engineers through complex design reviews
• Promote a unified digital workflow vision internally

Operational Excellence

• Own reliability and security of integration microservices
• Ensure robust monitoring and alerting for enterprise PLM transaction lifecycles

What You'll Bring

• 8–12+ years of software development experience leading complex initiatives
• Deep expertise in Python, React/TypeScript, and AWS
• Strong experience with system architecture, microservices, and distributed systems
• Experience building enterprise-grade integrations beyond simple API wrappers
• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience

Preferred Qualifications

• Experience with enterprise engineering software ecosystems such as Dassault/SolidWorks or Autodesk
• Understanding of B-Rep, mesh formats, and 3D modeling workflows
• Experience in e-commerce, fintech, or B2B marketplaces
• Experience building dedicated-tenant or ring-fenced enterprise solutions

Compensation and Benefits

• Base salary range: $200,000 - $225,000 annually plus bonus and equity
• 401(k) match
• Medical, dental, and vision insurance
• Life and disability insurance
• Paid time off including vacation, sick leave, holidays, and parental leave
• Employee assistance and wellbeing resources

Xometry is an equal opportunity employer. For US-based roles, Xometry participates in E-Verify after offer acceptance.