Mechanical Engineer — Own High-Impact Hardware (Equity)

Ultrasonium; Woburn (MA); On-site; USD 75,000 - 120,000; Full time

Benefits offered by this job

Stock options

Equity

On-site workspace

Patent opportunities

Flexible working arrangements

Job summary

Ultrasonium is seeking a mechanical engineer to design mechanical and electromechanical subsystems, structures, thermal management, and motion hardware, taking designs from concept through fabrication, assembly, and test.

You will work directly with the founding team on a novel machine, own drawings, BOMs, and mechanical documentation, and collaborate with electrical, controls, and process engineering for system-level integration.

Qualifications

• Bachelor's degree required in Mechanical Engineering or related field.
• 1–5 years of mechanical design experience.
• Proficiency in CAD tools (SolidWorks, Fusion, NX, or equivalent).
• Strong GD&T and design for manufacturability understanding.
• Hands-on prototyping and assembly experience.

Responsibilities

• Design mechanical and electromechanical subsystems in CAD.
• Perform structural and thermal analysis to support design decisions.
• Specify and integrate motion hardware, actuators, and fixtures.
• Drive fabrication (machining and related methods), assembly, and test.
• Iterate designs based on test results.
• Own drawings, BOMs, and mechanical documentation.
• Collaborate with electrical, controls, and process engineering for system-level integration.
• Contribute to IP development with the founding team.

Skills

CAD proficiency

GD&T knowledge

Hands-on prototyping

Hardware startup experience

Fabrication & assembly

Education

Bachelor's degree in Mechanical Engineering or related field

Tools

SolidWorks

Fusion 360

NX

Job description

Ultrasonium is seeking a mechanical engineer to design mechanical and electromechanical subsystems, structures, thermal management, and motion hardware, taking designs from concept through fabrication, assembly, and test.

You will work directly with the founding team on a novel machine, own drawings, BOMs, and mechanical documentation, and collaborate with electrical, controls, and process engineering for system-level integration.