# Senior Product Integration Engineer (CAD) at Mainspring Energy

- Company: Mainspring Energy
- What the company does: Local power generation for data centers, utilities, industrial & enterprise applications. Fuel-flexible, fast to deploy, high-efficiency, low NOx power. Backed by General Catalyst and Khosla.
- Company website: https://www.mainspringenergy.com/
- Type: Startups
- Level: Senior
- Location: Menlo Park, CA
- Work setup: On-site
- Pay: $130K to $153K base salary per year (USD)
- Posted: 2026-10-13
- Apply by: 2026-11-27
- Apply: https://jobs.lever.co/mainspringenergy/f80e0437-0349-45da-bdd6-83eff9bec4ff?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/mainspring-energy-senior-product-integration-engineer-cad/

## About the role

Mainspring is seeking a Senior Product Integration Engineer (CAD) to own and maintain the integrated CAD definition of the Linear Generator as designs evolve. Design Engineers will continue to own the technical design and subsystem CAD; this role will make sure those designs are incorporated into authoritative POR and future-state reference assemblies and work together correctly in the context of the complete product. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- BS in Mechanical Engineering, Product Design, or a related technical field, or equivalent relevant experience
- 5+ years of experience in mechanical CAD, product design, packaging, product integration, or complex equipment design
- Advanced proficiency with CATIA, NX, Creo, SolidWorks, or another advanced 3D CAD platform, strong CATIA experience is highly preferred
- Demonstrated experience building and maintaining large, complex, multi-subsystem assemblies with disciplined reference and configuration practices
- Strong mechanical intuition and ability to identify packaging, clearance, routing, serviceability, assembly, and interface issues from 3D CAD
- Strong understanding of mechanical interfaces, drawings, GD&T, BOMs, revisions, and engineering change workflows

Tags: Mechanical Engr

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/mainspring-energy-senior-product-integration-engineer-cad/