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Sr. Staff Mechanical Design Engineer

Enphase Energy
Austin, TX Full Time
POSTED ON 11/12/2025 CLOSED ON 12/23/2025

What are the responsibilities and job description for the Sr. Staff Mechanical Design Engineer position at Enphase Energy?

Enphase Energy is a global energy technology company and a leading provider of solar, battery, and electric vehicle charging products. Founded in 2006, our innovative microinverter technology revolutionized solar power, making it a safer, more reliable, and scalable energy source. Today, the Enphase Energy System enables users to make, use, save, and sell their own power. Enphase is also one of the most successful and innovative clean energy companies in the world, with more than 80 million products shipped across 160 countries. 
  
Join our dynamic teams designing and developing next-gen energy technologies and help drive a sustainable future!
 
About the role
The Enphase Energy Storage and Systems Innovation team in the office of the CTO is responsible for defining, prototyping, and supporting the next generations of Enphase storage and systems products. The team is an integrated, multi-disciplinary group that is fast-moving and looking for motivated individuals that can contribute and collaborate closely with the team to deliver innovative solutions. As a member of the team, you will solve some of the most exciting problems in the energy space and help shape the direction of our products.

What you will do
  • Design high quality mechanical and electromechanical part and assembly designs efficiently and with good modeling practices
  • Produce 2D drawings and 3D CAD models, evaluate parts, and collaborate with a multi-disciplinary design team, suppliers, and contract manufacturing partners to develop product prototypes
  • Specify key functional and performance requirements; design and execute verification test plans
  • Perform mechanical analysis, structural FEA, vibration and shock analysis, FMEA, and design verification testing to inform designs and resolve issues and failures in prototype products
  • Research, analyze, implement, and test new materials and technologies to support innovative energy storage and system product designs
  • Complete documentation for design, testing, and analysis
  • Hands-on fabrication of electromechanical assemblies and prototypes
  • Work with a multi-disciplinary team to test and troubleshoot prototype designs
  • Mentor junior staff
Who you are and What you bring
  • BS/MS/PhD Mechanical Engineering or closely related discipline
  • Job title and position level will be determined upon the candidate’s experience.
    • Minimum experience: BS and 5 years / MS and 3 years / PhD with mechanical design experience for a Senior Engineer
    • BS and 8 years / MS and 6 years / PhD and 3 years mechanical design experience for a Staff Engineer
    • BS and 12 years / MS and 8 years / PhD and 5 years mechanical design experience for a Sr. Staff Engineer
    • Candidates with greater levels of experience may be considered and are encouraged to apply
Minimum Skills, Knowledge, and Special Attributes
  • Significant experience in product and part mechanical design
  • Expertise leveraging various high volume manufacturing approaches such as sheet metal stamping, die casting, extrusion, forging, laser welding, CNC machining, thermoforming, silicone/rubber molding, injection molding, etc.
  • Proficiency with structural FEA and analyses for vibration, fatigue, and load bearing
  • Experience designing products for manufacturability and reliability
  • High proficiency with an enterprise CAD package (Solidworks preferred)
  • Outdoor product design experience for various ingress protection environments
  • Good communication and documentation skills
  • Ability to work effectively on early-stage product development efforts with ambiguous requirements
  • Strong hands-on mechanical prototyping skills
  • Ability to take ownership of development tasks and drive them to completion in a timely manner and with high quality to support team success
Additional Desired Skills
  • Experience with design for energy product mechanical subsystems such as enclosures, racking systems, busbars, high voltage interconnects, insulation systems, battery chassis, electronics mounting, thermal management systems, and fire protection and containment systems 
  • Familiarity with common standards for electrical equipment and energy storage systems 
  • Experience integrating Printed Circuit Board (PCB) Assemblies and with MCAD/ECAD import/export tools and processes for collaboration between mechanical engineers and PCB layout engineers
  • Experience designing passive and active solutions for thermal management within a product 
Work location
  • Austin, TX

The base pay range for this position is $110,000 to $167,000. This salary range may be modified in the future. The successful candidate’s starting pay will be determined based on job-related skills, experience, education or training, work location, and market conditions. This position is also eligible for bonus, equity, and benefits.

 

Salary : $110,000 - $167,000

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