Senior Mechanical Design Engineer, Electrical Enclosures

Mainspring Energy; Menlo Park (CA); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

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Benefits

On-site at Menlo Park HQ

Job summary

Mainspring Energy is seeking Staff Mechanical Design Engineers focused on electrical enclosures and cables, aiming to improve functionality and system-level performance. You will lead projects from defining requirements through testing and release, with potential for direct reports in a collaborative, fast-paced environment.

Ideal candidates bring a strong mechanical background, ownership of electrical subsystems, proficiency in SolidWorks, and a drive to deliver cost-effective, zero-carbon

Qualifications

• Degree: BS or MS in Mechanical Engineering. Senior: BS + 10 years or MS + 8 years.
• Ownership of electrical enclosure and/or cable design from initial design to launch and cross-functional team leadership.
• Strong expertise in sheet metal design for medium-volume production and design-for-manufacturability challenges.
• Solid understanding of electrical engineering principles and thermal modeling and integration into larger system designs.
• Experience with SolidWorks and PDM; CFD/FEA; tools such as SolidWorks Flow Simulation or Ansys is a plus.
• Ability to manage complex technical decisions and influence design directions across teams.
• Passion for innovative, cost-effective solutions enabling large-scale deployment of zero-carbon energy technologies.

Responsibilities

• Lead the design, optimization, and execution of electrical hardware, balancing cost, safety, and reliability.
• Coordinate cross-functional reviews, requirements development, prototyping, testing, and tooling.
• Mentor junior engineers and guide design strategies to meet milestones.
• Collaborate with reliability, test, manufacturing, NPI, and external suppliers to deploy new designs into production.
• Lead end-to-end development cycle for electrical hardware including requirements, prototyping, testing and iterations.
• Ensure design for manufacturability and scalability for large-scale deployment of zero-carbon energy solutions.

Skills

Electrical enclosure design

Cable design

Sheet metal design

Thermal modeling

Cross-functional collaboration

Mentoring junior engineers

Education

BS or MS in Mechanical Engineering

Tools

SolidWorks

PDM

CFD

FEA

Ansys

Job description

Mainspring Energy is seeking Staff Mechanical Design Engineers focused on electrical enclosures and cables, aiming to improve functionality and system-level performance. You will lead projects from defining requirements through testing and release, with potential for direct reports in a collaborative, fast-paced environment.

Ideal candidates bring a strong mechanical background, ownership of electrical subsystems, proficiency in SolidWorks, and a drive to deliver cost-effective, zero-carbon