Senior Mechanical Engineer - Lead Hardware for Power Gen

Mainspring Energy; Menlo Park (CA); On-site; USD 150,000 - 210,000; Full time

Benefits offered by this job

Pre-IPO stock options

Benefits package

Onsite at Menlo Park HQ

Job summary

Mainspring Energy, headquartered in Menlo Park, CA, is seeking a Senior Mechanical Engineer to own significant mechanical projects within the Linear Generator platform. You will drive designs from concept through validation and release, working cross-functionally to deliver hardware into production or field use.

The role requires demonstrated ownership of mechanical design across multiple cycles, strong tradeoff judgment, and the ability to manage risks and dependencies with limited day-to-day

Qualifications

• BS or MS in Mechanical Engineering with demonstrated ownership of mechanical design work beyond task-level execution.
• Repeated experience designing, testing, iterating, and releasing mechanical hardware across design cycles.
• Ability to independently own a significant subsystem, project, or technical workstream with cross-functional dependencies.

Responsibilities

• Own significant mechanical projects, subsystems, or technical workstreams from requirements and concept development through validation, release, and implementation.
• Develop and release robust mechanical designs balancing performance, reliability, cost, manufacturability, and safety.
• Build and drive project plans, requirements, validation strategies, schedules, risk assessments, and release plans.
• Use analysis, testing, data, and engineering judgment to make design decisions and validate performance.
• Identify and mitigate risks before they become issues.
• Lead cross-functional technical discussions and design reviews with multiple stakeholders.

Skills

Mechanical design

Project leadership

Cross-functional collaboration

Engineering analysis

Communication skills

CAD/FEA experience

Education

Bachelor/Master in Mechanical Engineering

Tools

PLM systems

CAD software

Drawing release

Job description

Mainspring Energy, headquartered in Menlo Park, CA, is seeking a Senior Mechanical Engineer to own significant mechanical projects within the Linear Generator platform. You will drive designs from concept through validation and release, working cross-functionally to deliver hardware into production or field use.

The role requires demonstrated ownership of mechanical design across multiple cycles, strong tradeoff judgment, and the ability to manage risks and dependencies with limited day-to-day