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Mainspring Energy

Senior Software Engineer in Test

Menlo Park, CA

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hirly's read of this role

Role family
Engineering
Seniority
Senior
Stated salary
$135,000 – $159,000 per year
Country
US
Work mode
On-site / unstated
First seen by hirly
21 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

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

Do you enjoy diving into building new automation systems and formulating new testing approaches in areas like cloud computing, networking, IoT with real time operating systems, controls, simulations (MIL, SIL, PIL), and algorithms? We combine this technology with our company vision of building a new category of power that is affordable, reliable, and targeting a net-zero carbon grid. This cornucopia of science and technology will be your daily career at Mainspring.

This is an opportunity for you to join a world-class engineering team: to build and run automated testing systems to ensure the quality of the product. This is an exciting opportunity to become part of a rapidly growing engineering team.

In this role. you will have significant influence over the quality of the product, engage with developers to understand new features and technologies, and create innovative automated testing solutions within tight requirements to solve complex scenarios with multiple components.

Original posting on Mainspring Energy's site ↗

Listed on hirly, a job board. hirly is not the employer: Mainspring Energy is hiring for this role.

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