Renewable Energy, Energy Technology, Clean Energy

Senior Software Engineer in Test

Menlo Park, CAOnsiteFull TimeSeniorPosted 2 months agoVisa sponsorship available

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Required skills

Python
C++
CI/CD
AI Coding Assistants
System Validation
Root Cause Analysis
Risk-Based Testing
Test Automation
Software Engineering
Test Framework Design

Role summary

Mainspring Energy is seeking a Senior Software Engineer in Test to join their world-class engineering team. This role involves architecting automation systems, designing robust test frameworks, and integrating CI/CD pipelines to ensure product quality. Responsibilities include system validation for complex hardware/software integrations, leading root cause analysis for failures, and driving risk-based testing strategies. The ideal candidate will have strong hands-on experience in Python and C++, a proven track record in leading automation projects, and proficiency in leveraging AI coding assistants. A Bachelor's degree in Computer Science with 6+ years of experience or a Master's with 5+ years is required.

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.

Responsibilities

Architect Automation: Design and scale robust test frameworks and CI/CD integrations

System Validation: Create workflows to validate complex hardware/software integrations and resolve system-level bottlenecks

Root Cause Analysis: Lead failure analysis and risk mitigation to ensure test stability and environment reliability

Strategic Coverage: Drive risk-based testing strategies to ensure comprehensive coverage of all critical-path functionalities

Qualifications

Experience & Education: Bachelor’s degree in Computer Science or a related field with 6+ years of professional experience, or a Master’s degree with 5+ years in an SDET or Software Engineering role

Engineering Mindset: A driven, self-directed contributor who views test infrastructure as a first-class product; you thrive on architecting scalable, automated systems that increase developer velocity

Strategic Test Design: Proven track record of leading complex automation projects from design to implementation, with the foundational ability to perform deep-dive manual exploratory testing and technical test case design

Technical Versatility: Strong hands-on experience developing in Python and C++, with the flexibility to navigate and contribute to diverse codebases as the project requires

AI Workflow Ownership: Demonstrated proficiency in leveraging AI coding assistants as a force multiplier for productivity, combined with the professional judgment to challenge and expand upon AI-generated solutions to ensure system integrity and long-term maintainability

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.

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