Senior ATE Mechanical Engineer (Contractor)

Lunar Energy is a home energy technology company that designs and sells integrated clean energy systems for residential customers. Its flagship product, the Lunar System, combines solar power generation, battery storage, and smart energy management into a compact, aesthetically designed unit that allows homeowners to produce, store, and use their own clean electricity. The company also offers the Lunar App and Lunar AI to help homeowners monitor and optimize their energy usage, as well as a Virtual Power Plant (VPP) program called Gridshare that enables customers to share stored energy with the broader grid. Lunar Energy's mission centers on making clean energy accessible, affordable, and simple for everyday homeowners, with the broader goal of accelerating the electrification of homes — including solar, EV charging, heating, and cooking. The company has partnered with Octopus Energy to offer innovative battery electricity plans, reflecting its commitment to rethinking how residential energy is produced and consumed. Lunar Energy has raised $232 million in financing to support its growth and expand its installer partner network across the United States. Founded by engineers with backgrounds at Tesla, Lunar Energy differentiates itself through a platform-first approach that goes beyond a standalone battery product, positioning its system as the foundation for whole-home electrification. The company serves both homeowners and a network of certified installer partners, and has received notable press coverage for its role in redefining home energy with smarter, cleaner power solutions.

Senior ATE Mechanical Engineer (Contractor)

As a Senior ATE Mechanical Engineer 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.

On a given day at Lunar, you’ll likely…

• 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

Desired Skills/Experience

• Mechanical Design
• 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.
• Manufacturing Support
• 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.
• Communication
• 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 

Our DE&I Philosophy: Lunar Energy is an equal opportunity employer. We are committed to attracting, developing and retaining diverse talent by supporting an inclusive workplace. Lunar recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any other status protected by applicable law.

Our Compensation Philosophy: Our goal is to ensure that all Lunar Energy employees are fairly compensated. Please note that the hourly range information that follows is a good faith estimate for this position provided pursuant to the Pay Transparency for Pay Equity Act for California applicants. The hourly range estimate for this position depending on level of experience is $72-$80 USD

The actual offer, reflecting the total compensation package will be at the company’s sole discretion, and determined by factors including but not limited to years of experience, job level, geographic location, and other relevant business considerations. The company also reserves the right to amend or modify this job description, employee perks, and benefits at any time.