Senior Staff Mechanical Engineer
Halo Industries, Inc.
Senior Staff Mechanical Engineer
mainspringenergy· Mechanical and Structural Systems
About this role
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
About the Role
Mainspring is seeking a Senior Staff Mechanical Engineer to shape technical direction across multiple teams, systems, or major program areas within our Linear Generator platform. In this role, you will guide system-level design decisions, resolve complex cross-functional tradeoffs, identify risks that may not be visible within individual projects, and create technical leverage through architecture, standards, validation strategy, and high-quality decision-making.
This role is intended for engineers who have already demonstrated advanced technical ownership within a major subsystem, team, or technical area and are now ready to influence outcomes across a broader part of the organization. A strong candidate should be able to operate with high autonomy, frame ambiguous system-level problems, align stakeholders, improve technical decision quality across projects, and help teams avoid rework caused by weak assumptions, incomplete validation, or missed integration risks.
Candidates who primarily provide technical leadership within one team, subsystem, or technical area may be better aligned to a Staff Mechanical Engineer role, while candidates who serve as a company-level technical authority in a critical domain may be better aligned to a Principal Mechanical Engineer role.
Frequently Asked Questions
What is the salary for the Senior Staff Mechanical Engineer role at mainspringenergy?
The listed salary for this Senior Staff Mechanical Engineer position at mainspringenergy is USD 186K–225K. This is an Salary role.
Where is the Senior Staff Mechanical Engineer position at mainspringenergy located?
This Senior Staff Mechanical Engineer role at mainspringenergy is based in Menlo Park, CA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior Staff Mechanical Engineer role at mainspringenergy full-time or part-time?
This is listed as a Salary position. It is posted as a Senior Staff Mechanical Engineer role in the Mechanical and Structural Systems department at mainspringenergy.
Which team or department does the Senior Staff Mechanical Engineer at mainspringenergy belong to?
This Senior Staff Mechanical Engineer position is part of the Mechanical and Structural Systems department at mainspringenergy. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Staff Mechanical Engineer position at mainspringenergy?
Click the "Apply Now" button on this page. You will be redirected to mainspringenergy's official application portal hosted on lever where you can submit your application directly.
When was the Senior Staff Mechanical Engineer job at mainspringenergy posted?
This Senior Staff Mechanical Engineer position at mainspringenergy was posted on Aug 6, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Staff Mechanical Engineer
mainspringenergy · 💰 USD 186K–225K
You'll be redirected to mainspringenergy's official application page on Lever.