Mechanical Engineer

Lumicity; Los Angeles (CA); On-site; USD 100,000 - 130,000; Full time

Job summary

A confidential organization in Los Angeles seeks a practical mechanical engineer for a hands-on role focused on designing and fabricating innovative prototype systems. The ideal candidate will have over 5 years of experience in mechanical engineering, proficiency in machinery, and the ability to collaborate closely with technical teams. This fully on-site position offers the opportunity to work in a fast-paced R&D environment where quick iterations and problem-solving are essential.

Qualifications

• 5+ years of hands-on mechanical engineering or prototyping experience.
• Extensive experience operating manual machining equipment.
• Strong background in fabrication and prototype hardware development.
• Proven ability to take designs from concept through testing.
• Comfortable working in a fast-paced, build-test-iterate environment.

Responsibilities

• Design, build, and iterate mechanical systems for prototypes.
• Perform machining and fabrication using manual and CNC equipment.
• Manufacture precision parts for prototype development.
• Work from engineering drawings and CAD models.
• Collaborate with engineers to prototype and refine designs.

Skills

Hands-on mechanical engineering

Prototyping experience

Machining and fabrication

Troubleshooting skills

Collaboration skills

Education

B.S. in Mechanical Engineering

Tools

CNC equipment

Manual machining tools

Job description

This position is for a confidential organization developing advanced technologies in Los Angeles, CA. This is a fully on-site role focused on the hands-on design, fabrication, assembly, and testing of first-of-a-kind mechanical systems. The ideal candidate is a highly practical mechanical engineer who enjoys working directly in the shop and lab, designing, machining, fabricating, and iterating on complex prototype hardware in a fast-paced R&D environment.

Responsibilities

• Design, build, and iterate mechanical systems and components for advanced prototypes.
• Perform hands-on machining and fabrication using manual and CNC equipment including mills, lathes, drill presses, and fabrication tools.
• Manufacture precision parts and fixtures to support prototype development, testing, and experimental systems.
• Work directly from engineering drawings, CAD models, and schematics to fabricate and assemble mechanical hardware.
• Collaborate closely with engineers and technicians to rapidly prototype, test, and refine mechanical designs.
• Support the assembly and integration of mechanical systems including piping, pressure systems, pumps, valves, and structural assemblies.
• Troubleshoot mechanical systems during build and testing, performing root-cause analysis and implementing design improvements.
• Modify and improve hardware quickly based on test results and operational feedback.
• Assist in the development of tooling, jigs, fixtures, and test hardware to support engineering development programs.
• Maintain shop equipment, tools, and workspaces to high safety and professional standards.

Experience Required

• 5+ years of hands-on mechanical engineering or prototyping experience in R&D, energy systems, aerospace, robotics, or advanced manufacturing environments.
• Extensive experience operating manual machining equipment (lathe, mill, bandsaw, drill press, grinders).
• Strong background in fabrication, mechanical assembly, and prototype hardware development.
• Experience building and integrating mechanical systems such as piping, pressure vessels, structural frames, pumps, and fluid systems.
• Proven ability to take designs from concept through fabrication, assembly, and testing.
• Demonstrated troubleshooting skills in complex prototype or experimental systems.

Qualifications

• B.S. in Mechanical Engineering or equivalent hands-on engineering experience.
• Strong working knowledge of machining practices, fabrication methods, and mechanical design for manufacturability.
• Proficiency interpreting engineering drawings, GD&T, and CAD models.
• Practical experience with shop tools, fabrication processes, and rapid prototyping techniques.
• Comfortable working in a fast-paced, build-test-iterate engineering environment.
• Strong communication and collaboration skills across engineering and technical teams.
• Ability to work on-site in Los Angeles, CA.

For immediate consideration, please click apply and attach a copy of your resume.