The AI platform for hardware engineering

Requirements, design changes, reviews, and decisions connected in one system.

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Built by Mechanical & AI Engineers from…

Built for product design, manufacturing, and hardware companies

Unlock your design intent.
Design Sessions
Track design decisions in CAD as they happen. Tandem records every sketch, mate, and feature in real time.
A documentation dashboard with a search bar, documentation entries with dates and file counts, and options to download, upload, or delete files. Technical specifications and executive summaries are shown for selected entries, emphasizing organized engineering data management.
Requirements Workspace
Keep requirements tied to live designs, verification, and review context.
A documentation dashboard with a search bar, documentation entries with dates and file counts, and options to download, upload, or delete files. Technical specifications and executive summaries are shown for selected entries, emphasizing organized engineering data management.
Review & Context
Comments, decisions, and discussions stay connected to the relevant part, feature, interface, or requirement, so teams stop rebuilding context in every review.
A documentation dashboard with a search bar, documentation entries with dates and file counts, and options to download, upload, or delete files. Technical specifications and executive summaries are shown for selected entries, emphasizing organized engineering data management.
Security
Tandem supports SOC 2, ITAR-compatible environments, and self-hosted or GovCloud deployment for sensitive hardware programs.
Computer screen displaying a SolidWorks 3D modeling interface, with an engineer designing a mechanical assembly. The center shows a detailed metallic and red component, while the right side features the Tandem Watch panel, including Tandem Docs and Tandem Assistant sections for enhanced documentation and design support. The left panel lists model components, and toolbars are visible at the top, highlighting a technical CAD workflow.

Assist

Stay in flow, let Tandem assist.

Catch product requirements, compliance issues, and best practices as you design & manufacture.

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Seamless Integration, Zero Hassle

Tandem works where your engineers already do.

This image is showing that Tandem integrates with Onshape by PTC
This image is showing that Tandem integrates with Solidworks
This image is showing that Tandem integrates with Siemens NX
This image is showing that Tandem integrates with Autodesk Inventor
This image is showing that Tandem integrates with Dassault Systemes Catia

Why teams adopt Tandem

Keep requirements tied to change

When a design changes, Tandem helps teams see which requirements, tests, and downstream decisions are affected.

Keep requirements tied to change

When a design changes, Tandem helps teams see which requirements, tests, and downstream decisions are affected.

Make rationale easier to recover

Design history, review notes, and engineering decisions stay attached to the relevant work, so teams can understand why something exists without a scavenger hunt.

Make rationale easier to recover

Design history, review notes, and engineering decisions stay attached to the relevant work, so teams can understand why something exists without a scavenger hunt.

Help teams decide with context

Tandem surfaces relevant past decisions, constraints, and open questions at the moment of work, so teams spend less time rehashing old debates.

Help teams decide with context

Tandem surfaces relevant past decisions, constraints, and open questions at the moment of work, so teams spend less time rehashing old debates.

Built for today’s workflows. Designed for agentic engineering.

Tandem turns fragmented engineering activity into structured engineering memory that compounds over time.