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Mechanical Engineer - Test Fixture Designer

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Lunar Energy

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Location:
United States , Mountain View

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

130000.00 - 175000.00 USD / Year
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Job Description:

As a Mechanical Engineer - Fixture Designer at Lunar, you will be responsible for the full product development lifecycle of mechanical systems within our revolutionary home energy products. We are looking for people who are passionate about a more sustainable future and want to make that vision a reality. An ideal candidate is excited and ready to collaborate closely with a small, dedicated team. Engineers at Lunar are hands-on and involved in a wide range of facets of the product, from applying fundamental physical principles in design to working with high-volume production suppliers. Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

Job Responsibility:

  • Work back and forth with collaborators across the company to continuously refine and improve our understanding of how our products can create the greatest impact, get to market quickly, and operate reliably for our customers
  • Brainstorm and evaluate new solutions, weigh pros and cons, and narrow down options
  • Efficiently test ideas and designs: anything from back-of-the-envelope calculations to physical tests and multi-physics simulations
  • Design high-performance, reliable, easy-to-manufacture parts and assemblies, employing a variety of high-volume manufacturing processes
  • Create and review drawings and other part specifications
  • Manage bills of materials, cost and mass roll-ups, vendors and engineering releases
  • Define manufacturing processes and inspection methods
  • Collaborate directly with part manufacturers to support prototypes and production

Requirements:

  • Extensive experience in 3D Modeling software (e.g. Onshape, NX, Solidworks)
  • Knowledge of how to make a PCBA Bed of Nails fixture
  • Detailed knowledge of 2D Drawing creation and GD&T
  • Ability to analyze designs using Tolerance Analysis/Stackup, Statics/Load Path Analysis, Finite Element Analysis, Root Cause Analysis and Design Failure Modes and Effect Analysis
  • Familiarity with electronic test equipment and basic electromechanical troubleshooting
  • Experience with test fixtures, jigs, and various mechanical components for high cycle count
  • Experience with fine pitch assemblies and construction
  • Should be able to conduct strain gauge measurements and understand stress on PCBAs and incorporate proper design to avoid it
  • Experience with PCBA management such as Mechanical Control Outline generation
  • Working knowledge of pneumatic cylinders and control methods
  • Working knowledge of Thermal Management techniques
  • Prototyping skills using 3D printing, machining, sheet metal bending, laser cutting, milling and general machine shop tools
  • Manage suppliers for all the parts which are required for our station construction
  • Experience communicating with component suppliers including Design for Manufacturing report review, First Article Inspection, and Part Production Approval Process
  • Ability to generate Work Instructions for electromechanical assemblies
  • Knowledge of Process Failure Modes and Effects Analysis
  • Create preventive maintenance documentation
  • Extensive experience with Onsite Build Support at domestic and international contract manufacturing sites
  • Approximate 10-20% travel as and when required
  • Ability to generate detailed design documentation
  • Drive a project from start to deployment involving other cross functional teams, vendors, technicians etc
  • Ability to collaborate with other engineers (electrical engineers, automated test engineers, etc.)
  • Skilled at clear verbal and written communication including concise slide deck creation
  • Ability to give kind and direct feedback and receive feedback with an open mind
What we offer:
  • Medical, dental, and vision insurance for employees and dependents
  • Flexible Paid Time Off plus 10 paid holidays
  • Tax deferred 401(k) plan
  • Paid parental leave for all full time employees including 12 weeks paid parental leave for the birthing mother and 6 weeks paid parental leave for the non-birthing parent
  • Subsidized EV charging and pre-tax commuter benefits
  • Opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program

Additional Information:

Job Posted:
December 10, 2025

Employment Type:
Fulltime
Work Type:
On-site work
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