---
title: 'Mechanical Drafter - CAD at Mainspring Energy'
canonical: 'https://feeny.ai/job/mechanical-drafter-cad-mainspring-energy-monterrey-ky1wxq6g6b01'
type: 'job'
last_seen: '2026-09-13'
---

# Mechanical Drafter - CAD at Mainspring Energy

- **Company:** Mainspring Energy
- **Location:** Monterrey, Mexico
- **Work type:** onsite
- **Posted:** 2026-09-03
- **Last confirmed live:** 2026-09-13
- **Apply:** https://jobs.lever.co/mainspringenergy/5f0edf7e-1831-43ce-8b2f-3b9e794eab89

## 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 seeking a Mechanical Drafter to support our engineering team for our Linear Generator platform. In this role, you will build practical drafting skills by supporting CAD modeling and drawing work for COTS (Commercial off-the-shelf) parts, detailing out custom parts and tools, handling assembly rebuilds, and implementing CAD modeling/drawing requests from the engineering team.

This role is intended for drafters who have developed practical CAD drafting experience or early-career engineers who are looking to build this skillset, applying their mechanical fundamentals to CAD modeling and drawing work. A strong candidate should be detail-oriented, eager to learn, and able to execute well-defined tasks with guidance from more experienced drafters or engineers.

## Responsibilities

- Create, refine, and maintain detailed 3D CAD models and 2D engineering drawings for COTS parts

- Execute on high volumes of CAD queue tickets to incorporate engineering requests into 2D fabrication drawings, 3D models, and BOMs accurately and efficiently within SolidWorks and PLM

- Perform self-reviews and peer reviews to ensure drawings meet ANSI standards and internal requirements before releasing files via PLM

- Support maintenance of reference assemblies, updating metadata, fix and repair broken model mates, defeature complex vendor models, and perform rebuilds

- Assist engineers with SolidWorks questions on internal channels and support new documentation and continuous improvement initiatives

## Qualifications

- 2-4 years or BS in Mechanical Engineering with 1-3 years of industry experience in a drafting role

- Proficient in SolidWorks or a comparable CAD package, modeling,  large assembly management, and experience with some level of PDM/PLM model and drawing release workflows

- Familiarity of ANSI/ASME standards for dimensioning, datums, GD&T application, and weld/sheet metal callouts.

- Experience maintaining revision-controlled Bills of Materials and managing metadata fields

- Ability to execute well-defined CAD tasks carefully, communicate progress, and incorporate feedback from others on the team

- Clear verbal and written communication skills in English and Spanish to interact with US-based and local engineering teams. A willingness to ask questions, learn company processes, and build practical engineering judgment

## Preferred Qualifications

- Internship, co-op, project team, research, or early-career experience involving modeling and drawing skills in a SolidWorks comparable CAD package

- Exposure to tolerance analysis on parts and assemblies is a plus

- Demonstrable experience applying GD&T and ANSI/ASME standards

- Exposure to manufacturing processes such as machining, sheet metal, welding, casting, molding, additive manufacturing, or assembly and ability to identify and resolve design for manufacturability issues is a plus

- Interest in energy systems, engines, generators, compressors, pumps, thermal systems, fluid systems, structures, electromechanical systems, or industrial equipment

Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.

In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.

## About Mainspring Energy

## Company Overview
- **One-liner**: Mainspring Energy designs and manufactures fuel-flexible linear generators that provide low-emission, dispatchable onsite power for utilities, data centers, and industrial customers.
- **Entity Type**: Private (Series F)
- **Headquarters**: Menlo Park, California, United States
- **Founded**: 2010
- **Founders**: Shannon Miller

## Core Business
- Primary industry: Electric Power Generation
- Target customers: B2B – utilities, data center developers, enterprise, industrial
- Mission statement: "Redefining how local power is delivered to capacity constrained companies and communities" – enabling clean, reliable, and fuel-flexible power.

## Products & Services
- **[Linear Generator (LGen)]**: A flameless, fuel-flexible generator that converts gaseous fuels (natural gas, biogas, hydrogen, propane) into electricity with near-zero NOx emissions. Modular (0.25 MW per unit), fast-ramping (0-100% dispatchable), 46% electrical efficiency (LHV). Standardized 2.5 MW configuration (10 units). Suitable for grid-parallel or grid-independent operation, microgrids, and balancing renewables.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metrics**: Annual revenue $117M (latest fiscal year); total funding $813M; 407 employees
- **Notable Investors/Partners**: General Catalyst (led Series F, 2025, $258M), Lightrock (led Series E, 2022, $140M), BloombergNEF (grant), and others.
- **Growth Signals**: Powering the largest U.S. EV truck charging depot; >1 GW of capacity trusted by Fortune 500 companies and utilities; headcount growing +3.4% YoY; job postings up +121.4% YoY (62 active openings); recently expanded into data center market.

## Competitive Advantages
- **Fuel Flexibility**: Single generator can seamlessly switch between natural gas, RNG, hydrogen, and propane without hardware retrofits.
- **Near-Zero Emissions**: <1.5 ppm NOx (0.05 lb/MWh) – meets stringent air quality standards.
- **Dispatchability**: 0-100% load following, grid-independent operation, capable of firming renewables.
- **Low Maintenance**: Only two moving parts, no oil changes, modular design reduces downtime.
- **High Efficiency**: 46% electrical efficiency (LHV) across all scales.
- **Fast Deployment**: Factory-built, skid-mounted units enable rapid installation.

## Strategic Focus
- Scaling manufacturing and deployment to meet growing demand from data centers and utilities.
- Advancing hydrogen and biogas compatibility to support long-term decarbonization.
- Expanding standardized 2.5 MW configurations to lower installed cost and accelerate timelines.
- Building a diverse, cross-disciplinary team to drive innovation in power generation.

## Why Work Here
- Culture of inclusion, respect, and collaboration across engineering, operations, and field teams.
- Emphasis on growth: "We invest in your growth because progress requires people who keep getting better."
- Hybrid/Remote options: headquarters in Menlo Park, manufacturing facilities, and remote field service roles.
- Active hiring across engineering (mechanical, electrical, software), operations, supply chain, and field service.
- Competitive salary ranges (e.g., Engineer ~$107k, Controls Engineer ~$109k, Manufacturing Engineer ~$91k) plus benefits.
- Diverse talent origins from Tesla, Stanford, Apple, SunPower, and other top clean energy companies.

## Sources
1. [mainspringenergy.com/company](https://www.mainspringenergy.com/company)
2. [mainspringenergy.com/careers](https://www.mainspringenergy.com/careers)
3. [jobs.lever.co/mainspringenergy](https://jobs.lever.co/mainspringenergy)
4. [linkedin.com/company/mainspringenergy](https://www.linkedin.com/company/mainspringenergy)
5. [mainspringenergy.com/product](https://www.mainspringenergy.com/product)

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