Overview
About Mainspring
Full job description
About Mainspring Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more. The core values that ground our work, guide our decisions, and connect us together: Pragmatic Optimism Excellence without Ego Proactive Collaboration
Job Overview Mainspring is looking for a Senior Staff Mechanical Engineer — Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for our next-generation energy platforms. This is a highly visible technical leadership role focused on solving difficult real-world engineering problems across power electronics packaging, harsh-environment durability, manufacturability, and system integration. You’ll help shape core product architecture while working on systems deployed across demanding operating environments ranging from coastal and desert conditions to future megawatt-scale applications. We’re looking for an engineer who understands how electrical and mechanical systems behave in the real world — and can drive robust electromechanical solutions from concept through production.
Lead the design and development of electrical enclosures, busbars, cable assemblies, and integrated electromechanical systems
Drive packaging decisions balancing thermal performance, vibration durability, EMI considerations, creepage/clearance, manufacturability, serviceability, and cost
Own hardware through the full product lifecycle including concept development, prototyping, validation, production launch, and sustaining engineering
Partner closely with Electrical, Reliability, Manufacturing, Test, NPI, and supplier teams to develop robust hardware solutions
Solve challenging environmental durability problems involving corrosion, outdoor deployment, thermal extremes, and vibration-heavy operating conditions
Lead root-cause investigations for field and test failures and drive corrective actions into production
Mentor engineers through design reviews and technical leadership on complex problems
BS or MS in Mechanical Engineering or related field
12+ years of experience designing electromechanical hardware systems
Proven experience designing electrical or electronic enclosures through production release
Strong background in sheet metal design and mechanical-electrical integration
Experience packaging electrical components such as fuses, contactors, relays, PCBAs, busbars, cables, connectors.
Experience in designing systems such as inverters, controllers, fuse systems, batteries, or other power electronics.
Understanding of thermal management, vibration, environmental durability, grounding, creepage/clearance, and EMI-related packaging constraints
Experience supporting validation, testing, manufacturing launch, and sustaining engineering
Proficiency with SolidWorks and PLM systems
Busbar design experience
HV power systems experience
Cable harness and routing design experience
Experience with corrosive or outdoor deployment environments
Familiarity with FEA tools such as Ansys
Background in EVs, power electronics, energy systems, industrial equipment, or ruggedized hardware systems
Tips for this job
Practical Job and Scholarship guidance. These tips do not replace official rules or create new eligibility requirements.
- Tailor the CV and application to the responsibilities and required skills stated on the official employer page.
- Use concrete evidence of relevant work, projects and measurable results rather than generic claims.
- Confirm location, work authorization, remote restrictions and sponsorship terms before applying.
- Apply through the original employer or official recruitment destination shown on this page.
Verification notes
laptop-ats-crawler v2
Job and Scholarship is the discovery and verification layer. Confirm eligibility, dates, salary/funding and application instructions on the original source before submitting anything.
mainspringenergy (lever) ↗Browse current Job and Scholarship listings from mainspringenergy (lever) →
