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Xometry Logo

Principal Software Engineer

Xometry

$148,000 - $193,000
Jan 2, 2026
North Bethesda, MD, US
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Xometry is seeking to build fast, reliable, and intuitive solutions that empower their partners to more easily manage jobs, streamline operations, and maximize their growth potential within their manufacturing marketplace

Requirements

  • 10+ years of professional software development experience in a fast-paced, product-driven environment
  • Strong technical expertise in full-stack development, including backend development with Python, backend microservices and REST API design using Node.js, and frontend development with React and TypeScript
  • Experience with AWS, including deploying, monitoring, and scaling production workloads
  • Marketplace product experience is highly desirable, with an understanding of scaling multi-sided platforms
  • Backend development with Python (services, APIs, data-driven systems)
  • Backend microservices and REST API design using Node.js
  • Frontend development with React and TypeScript, with a focus on scalable UI design and usability

Responsibilities

  • Hands-On Technical Leadership: writing and reviewing architectural plans for new projects, and then participating in implementation with the team
  • Guide Innovation: championing the adoption of a good mix of traditional and cutting-edge technologies and methods
  • Teaching & Mentorship: serving as a mentor and guide to engineers across the organization, teaching and mentoring them to grow their skills
  • Code Review: doing code review and mentoring others within the organization to perform good code reviews
  • Operational Excellence: guaranteeing the delivery of superior software that not only meets but exceeds customer expectations, while aligning with the strategic business timelines
  • Collaborative Strategy: forging strong partnerships with product managers, designers, and company leadership to promote a culture of open communication, good collaboration, and high standards

Other

  • 10+ years of professional software development experience
  • Proven leadership skills, with the ability to set technical direction, mentor engineers across levels, and influence product and business decisions
  • Excellent communication and collaboration abilities, comfortable engaging with both technical and non-technical stakeholders, from junior ICs to executives
  • 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.
  • Annual bonus depending on factors such as job-related skills, relevant experience, and location