Company Description
At Open Ring (www.o-ring.tech), we’re behind the world’s first open-source smart ring platform, built for researchers, startups, and developers. We’re building a community-driven ecosystem for wearable tech innovation. As we scale, we’re eager to welcome exceptional talent ready to contribute to a global movement.
Role Overview
We are looking for a freelance CAD designer to support the development of a smart ring housing prototype. The role is focused on refining the mechanical design, preparing production-ready CAD files, and supporting fast prototype iteration for 3D printing and manufacturing.
You will work closely with the founders and technical team to turn the current concept into a functional, wearable, and manufacturable ring housing.
Key Responsibilities
- Refine the CAD design of a smart ring housing, including shell structure, fit, locking/assembly mechanism, and external form.
- Create and update CAD files, including native working files, STEP, STL, and other required formats.
- Adjust the design for comfort, wearability, edge softness, wall thickness, and overall product feel.
- Ensure internal space and structure support hardware components such as PCB, battery, sensors, haptic motor, and charging/contact areas.
- Prepare files for 3D printing and production.
- Review and improve existing CAD files for manufacturability, assembly, and structural reliability.
- Create multiple design iterations where needed and clearly document changes between versions.
- Support transition from prototype design toward mold/manufacturing preparation.
Qualifications
- Strong experience in CAD design for small consumer products, wearables, electronics housings, or precision plastic parts.
- Experience designing for 3D printing, prototyping, and eventual manufacturing.
- Proficiency in CAD software and ability to provide native files, STEP, and STL exports.
- Good understanding of tolerances, wall thickness, locking mechanisms, assembly constraints, and DFM principles.
- Ability to work with compact internal hardware layouts and tight spatial constraints.
- Experience with wearable products, rings, jewelry, medical/wellness devices, or small electronics housings is a strong plus.
- Fast, practical, detail-oriented, and able to work independently on a freelance/temporary basis.
- Clear communicator who can provide realistic timelines, progress updates, and structured file versions.
This is a project-based freelance role with hourly payment agreed based on experience and scope. The position is remote, but applicants must be located in Europe and available to start immediately.
Please note that applications from outside Europe will not be considered.
To apply, please send your portfolio, hourly rate, and availability directly to: [email protected]
We would love to hear from you!