Mechanical Designer: Junior & Senior Level Openings

Maybell Quantum is redefining the future of computing. As a venture-backed quantum hardware innovator experiencing rapid growth, we're building technology that will transform industries for decades to come. Quantum computers will be as transformative to the next 30 years as the internet was to the last 30—and our team is creating the hardware foundation to make this revolution possible.

Maybell Quantum is seeking Junior and Senior Mechanical

Designers / CAD Specialists to develop accurate 3D models, detailed assemblies, and production-ready manufacturing drawings for precision mechanical hardware. This is a hands-on CAD design and drafting role. You'll translate concepts, sketches, and engineer-provided requirements into clear, manufacturable documentation, working closely with engineers, technicians, manufacturing, and suppliers.

Key responsibilities

• Create, revise, and maintain detailed 3D part models, complex assemblies, and 2D production drawings from sketches, specifications, prototypes, and engineering direction.
• Produce complete, fabrication-ready drawings with appropriate dimensions, tolerances, notes, and GD&T in accordance with applicable drafting standards (including ASME Y14.5 / Y14.100).
• Apply practical knowledge of machining, sheet metal, welding, brazing, and other manufacturing processes to improve part and drawing manufacturability.
• Develop assembly models and documentation that support reliable fit, straightforward assembly, and repeatable production.
• Create and maintain bills of materials (BOMs), part numbers, CAD files, drawing packages, and revision records.
• Perform interference checks, dimensional reviews, and routine tolerance stack-ups; work with engineers to resolve more complex fit or tolerance issues.
• Prepare CAD and drawing packages for prototypes, suppliers, and in-house fabrication; update designs and documentation based on build feedback.
• Implement approved design changes and engineering change requests/orders (ECRs/ECOs), ensuring released drawings and files remain accurate.
• Partner with machinists, technicians, manufacturing personnel, and vendors to troubleshoot fabrication and assembly issues.
• Collaborate with mechanical engineers and physicists to translate new product concepts into detailed CAD models and practical manufacturing drawings.
• Maintain organized CAD standards, templates, shared part libraries, and documentation practices.
• Required qualifications
• 3+ years of professional, hands-on mechanical CAD design and drafting experience, ideally producing parts and assemblies for physical manufacturing.
• Demonstrated ability to independently create accurate parametric 3D models, assemblies, and complete 2D fabrication drawings.
• Strong proficiency with at least one parametric mechanical CAD platform (such as Onshape, SolidWorks, Creo, Inventor, Fusion 360, or NX).
• Working command of mechanical drafting conventions, GD&T, dimensional tolerancing, and drawing interpretation.
• Practical familiarity with manufacturing methods, materials, and the information fabricators need from a drawing.
• Experience organizing assembly documentation, BOMs, drawing revisions, and released CAD data.
• Careful attention to drawing accuracy, file organization, and detail while managing multiple deliverables.
• Ability to communicate clearly with engineers, machinists, technicians, and outside fabrication partners.

Preferred qualifications

• Onshape is our primary CAD platform. Prior Onshape experience is valuable, but expertise in another parametric CAD system is equally welcome; we can support the transition.
• Hands-on Onshape experience with Part Studios, assemblies, drawings, and release/version workflows.
• Experience preparing precision mechanical components, thermal hardware, vacuum equipment, or cryogenic-system drawings.
• Experience creating manufacturing drawings for machined parts, sheet metal, weldments, or brazed assemblies.
• Experience with CAD/PDM or PLM release procedures and engineering change documentation.
• Formal education in mechanical design, drafting, or mechanical engineering technology, or relevant CAD certifications. Equivalent practical experience is fully acceptable.

What we offer

• $35.00 / hr - $45.00 / hr + potential bonuses commensurate with experience and performance
• Company Equity options
• Health, dental and vision insurance
• 401(k) with company match

Paid time off and holidays.

Professional development, training and certification support.

Maybell Quantum is solving incredibly challenging problems at the cutting edge of physics and engineering. Don’t meet every single requirement?  We are dedicated to building a diverse, inclusive, and authentic workforce, so if you’re excited about this role but your experience doesn’t aligned perfectly, we still encourage you to apply.