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Mainspringenergy

Senior Staff Mechanical Engineer - Electromechanical

Mainspringenergy · Menlo Park, CA

Posted about 3 months ago

or apply directly on Mainspringenergy's site. We never take the application ourselves.

Is this posting real?

This role has been open
80 days
Mainspringenergy's roles stay open a median of 81 days
Reposted
No
Salary listed
No
0% of Mainspringenergy's roles list one
Ghost-job risk at Mainspringenergy
high
86 stale, 1 reposted of 86 open
Hiring momentum
120 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-24

Measured from postings appearing on and disappearing from Mainspringenergy's own lever board since 2026-08-04. Full hiring picture for Mainspringenergy.

About this role

Mainspring Energy is seeking a Principal Mechanical Engineer - Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for their energy platforms. This role involves solving complex engineering challenges related to power electronics packaging and system integration, while ensuring durability in harsh environments. The engineer will contribute to shaping product architecture and will be involved in projects that require a deep understanding of electromechanical systems from concept through production.

Our read on this posting2.0out of 5
benefits
1/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Mainspringenergy as an employer.

What you need

  • Experience in designing and integrating electrical enclosures, busbars, and cable systems
  • Strong understanding of electromechanical systems and their real-world behavior
  • Proven ability to solve complex engineering problems in power electronics packaging
  • Experience with harsh-environment durability and manufacturability
  • Familiarity with engineering fundamentals such as CAD, FEA, GD&T, thermal/fluid analysis, and testing
  • Demonstrated ability to drive projects from concept to production

Worth weighing

  • No specific salary range provided
  • Emphasis on detailed resume may require significant effort to tailor applications
  • Role involves high visibility and responsibility, which may come with pressure
  • Company expresses flexibility in meeting requirements, which could indicate a broad range of acceptable experience

Summarised from Mainspringenergy's posting. Read the full original.

Listed by Mainspringenergy on their lever job board, last confirmed open on 2026-10-24. PitchMeAI is not the employer.

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