Mechanical Engineer - Thermal / Fluids Hardware Design

Mainspringenergy; Edison (CA); On-site; USD 80,000 - 110,000; Full time

Job summary

Mainspring Energy, located in Edison, California, is in search of Mid-Level Mechanical Engineers. This role focuses on designing hardware for thermal and fluid applications, contributing to innovative power solutions. Candidates should have a BS degree and relevant experience in air and liquid systems.

The position involves optimizing subsystems of the Linear Generator, working closely with cross-functional teams to ensure efficient deployment of designs into production. Competitive salary and growth opportunities are provided.

Qualifications

• Minimum 3 years of relevant experience with a BS or 2 years with an MS.
• Proven knowledge and experience in designing air or liquid handling systems.
• Attention to detail with documentation and design reviews.

Responsibilities

• Develop and optimize thermal subsystems for the Linear Generator.
• Work with teams to validate systems and components with rapid learning cycles.
• Collaborate with diverse teams for efficient production deployment.

Skills

Thermo-fluid system design

SolidWorks

Finite Element Analysis

Test plan development

GD&T

Education

BS Degree in Mechanical Engineering

MS in Mechanical Engineering or related field

Tools

Product Lifecycle Management (PLM)

Thermal systems design simulation tools

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.

Core Values

• Pragmatic Optimism
• Excellence without Ego
• Proactive Collaboration

Job Summary

Mainspring is seeking Mid‑Level Mechanical Engineers with a focus on designing hardware that requires thermal and fluids analysis. In this role, you will design hardware for air and liquid handling systems and develop new concepts and manage existing concepts through development, deployment, and manufacturing. Mainspring is a great place for engineers who like to solve challenging cross‑functional problems with a mix of computational analysis, hands‑on engineering, and team effort.

Responsibilities

• Participate in brainstorming activities to develop novel ways to improve all aspects of the Linear Generator.
• Develop and optimize key thermal subsystems of the Linear Generator to drive down cost, improve performance, and deliver high reliability.
• Contribute to projects within the thermal subsystems and projects in other subsystems.
• Work with reliability and test teams to validate systems and components with fast cycles of learning for deployment into the next generation of Linear Generators.
• Collaborate cross‑functionally with manufacturing engineering, NPI, and external suppliers to rapidly deploy new designs into production.

Qualifications

• BS Degree in Mechanical Engineering or a similar engineering field from an accredited institution plus 3 years of relevant industry experience, or MS plus 2 years of relevant industry experience.
• Direct experience designing air or liquid handling systems, with demonstrated engineering fundamentals in thermo‑fluid system design.
• Fluent in SolidWorks or a comparable CAD package. Experience with PLM (Product Lifecycle Management) or a similar CAD version control system is preferred.
• Experience with finite element analysis (structural, thermal, or fluids).
• Familiarity with thermal systems design simulation tools.
• Experience developing test plans and analyzing data for benchtop to product‑scale tests to validate new design concepts.
• Experience working with suppliers to develop and qualify new components.
• Experience with various manufacturing processes such as sheet metal forming, machining, and plastics molding and forming.
• Demonstrated attention to detail with the ability to generate and review design documentation, bill of materials, work instructions, and test plans and reports.
• Experience utilizing GD&T is ideal.
• Self‑starter with a proven ability to deliver functional product designs in a rapid development environment.
• Experience with a full design lifecycle from concept through manufacturing support is preferred.
• Interest in developing creative and cost‑effective solutions to enable the deployment of zero‑carbon energy technology at large scale.

Equal Opportunity Employer

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.

Compensation and Benefits

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.