Senior Mechanical Engineer

Lumafield•San Francisco, CA

3d•$150,000 - $190,000•Onsite

About The Position

Lumafield is seeking a Senior Mechanical Engineer to help design, prototype, and refine the next generation of its industrial CT scanning systems. The role spans motion systems and structures, system integration, and user-facing features, with a focus on reliable, manufacturable, and innovative solutions. Because the product combines complex hardware and software, the position calls for systems thinking, hands-on prototyping, and the ability to structure ambiguous design problems. The engineer will collaborate with electrical, firmware, systems, and software engineers to create functional, user-friendly hardware. This is a hands-on, in-person role based in Lumafield’s San Francisco, California office.

Requirements

Thrive in fast-paced, high-stakes startup environments.
Identify appropriate solutions to ambiguous, under-defined, and open-ended problems.
Navigate ambiguity and remain resilient through the ups and downs of a project.
Communicate and coordinate requirements effectively with other teams, tailoring messages to the audience.
Consider the short- and long-term impacts of major technology choices.
Serve as an engineering role model and demonstrate a standard of excellence.
Show enthusiasm for using AI tools to improve quality and increase speed.
Typically have a bachelor's or master's degree and multiple years of relevant experience performing activities directly applicable to the role.

Nice To Haves

Experience leading projects through a complete product lifecycle, including early manufacturing and mass production.
Experience designing motion systems, precision mechanisms, or mounts for imaging systems.
Background in industrial automation, inspection, or scientific instrumentation.
A shareable portfolio of mechanical designs, prototypes, or shipped products.

Responsibilities

Lead the technical aspects of mechanical design for complex assemblies and subsystems, and develop well-scoped milestones to deliver quarter-scale goals.
Take inventions through the full product lifecycle, from concept and design to initial engineering builds and transfer to mass manufacturing.
Use technical expertise to make informed tradeoffs in scope and execution to accelerate project timelines.
Break down business goals into technical solutions that can be executed by multiple team members.
Drive cross-functional collaboration with stakeholders to identify technical needs and develop effective engineering goals.
Work with and mentor junior colleagues to help them refine their craft.