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Xometry

Mid-sized

Xometry is an online marketplace and manufacturing platform that connects businesses with a network of manufacturers for custom parts, including CNC machining, 3D printing, and injection molding. It uses AI-powered quoting technology to provide instant pricing and streamline on-demand manufacturing and industrial sourcing.

2 interview notes · updated Jul 2026

Xometry·Machine Learning Engineer·Onsite - System Design / Architecture

Jun 2026
Xometry ML Engineer interview, system design round focused on productionizing a model under strict latency constraints. Pretty thorough question that covers a lot of ground at once, from profiling to hardware to post-launch monitoring.
  • You're handed a trained model and need to deploy it as a real-time inference service with a 200ms latency budget per prediction. Walk through how you'd clarify requirements, measure baseline performance, optimize the model and serving stack, pick hardware, validate accuracy vs. latency tradeoffs, and set up post-launch monitoring.

“This one is a full gauntlet disguised as a single question.”

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Xometry·Machine Learning Engineer·Technical Phone Screen

May 2026
First round for a lead ML role at Xometry. Pretty much the whole thing was a deep dive into one project you've led, so if you don't have a meaty end-to-end story ready, you're going to struggle.
  • Walk me through an ML project you led from start to finish, covering the business problem, how you measured success, the data, model selection, training and validation, deployment, your specific contributions, the impact, what you learned, and what you'd do differently.

“This is basically the entire interview packed into one question.”

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