Senior Commissioning Technician

Mainspring Energy; Fresno (CA); On-site; USD 80,000 - 110,000; Full time

Benefits offered by this job

Pre-IPO stock options

Job summary

Mainspring Energy is looking for a highly motivated Senior Commissioning Operations Technician to join the Commissioning team in Fresno, California. This role involves maintaining the mechanical integrity of our generators and ensuring successful startup and configuration of custom systems based on our innovative linear generators.

The ideal candidate will have at least 5 years of mechanical assembly experience, a strong commitment to safety, and be able to work independently under minimal supervision. Mainspring Energy offers a competitive compensation package inclusive of pre-IPO stock options.

Qualifications

• Minimum 5 years of experience with mechanical assembly and/or repair.
• Experience with precision measuring down to 0.001 using micrometers.
• Candidates must be able to lift to 50 lbs. and wear required PPE.
• Excellent communication skills, with software knowledge of Google Workspace as a plus.
• Valid Driver’s license required; Class C Commercial Driver’s License preferred.

Responsibilities

• Mechanically repair and perform maintenance on generator components.
• Collaborate with engineers on repairs and redesigns.
• Conduct mechanical inspections of installed units.
• Execute technical tasks with minimal supervision.
• Initial configuration and startup of custom linear generator systems.

Skills

Mechanical assembly

Mechanical repair

Communication skills

Troubleshooting

Tools

Torque wrenches

Micrometers

Bore gauges

Job description

Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations.

The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless reaction with near-zero NOx emissions. Backed by top-tier investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion.

Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.

Values:

• Pragmatic Optimism. Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.
• Excellence without Ego. We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world‑class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.
• Proactive Collaboration. The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.

More information can be found at www.mainspringenergy.com.

Job Overview

Mainspring Energy is seeking a highly motivated, mechanically inclined Senior Commissioning Operations Technician to join our growing Commissioning team. In this role, you will play a direct lead in completing planned and reactive service operations while transitioning into the technical operation of our systems. You will be responsible for the mechanical integrity of our units while increasingly taking on the configuration and startup of custom systems based on Mainspring's linear generators.

Responsibilities

• Mechanically repair and/or perform maintenance on components and assemblies that make up our generators in accordance with procedures and build checklists to meet customer requirements.
• Collaborate with engineers to fix, repair, and redesign components and assemblies.
• Conduct mechanical inspections of recently installed units, documenting condition information for use by our team for debugging or troubleshooting.
• Execute technical tasks and site operations with minimal supervision in variable environmental conditions, demonstrating self‑motivation and a strong commitment to safety.
• Perform initial configuration and startup of custom linear generator systems based on established engineering parameters.
• Utilize and provide feedback on automation scripts and commissioning toolkits to streamline unit onboarding and testing.

Required Qualifications

• Minimum of 5 years of experience with mechanical assembly and/or repair. Experience with automotive, aviation, and/or heavy equipment (e.g., HVAC, elevators/lifts, or industrial equipment) assembly is a plus.
• Experience with precision measuring, down to 0.001, using micrometers, bore gauges, gauge blocks, etc., and familiarity with torque wrenches and documentation of repairs performed.
• Candidates must be able to stand for long periods, lift to 50 lbs., and wear required PPE.
• Must have knowledge of how to use and maintain basic tools, such as torque wrenches and torque specifications.
• Must have experience with following written and verbal work instructions while on‑site.
• Excellent communication skills; software knowledge of Google Workspace is a plus.
• A proven track record for working well with others as part of a dynamic team.
• Ability to learn quickly, operate with minimal supervision, demonstrating self‑motivation and a strong commitment to safety.
• Valid Driver’s license required; Class C Commercial Driver’s License preferred.
• Willingness and ability to travel nationwide up to 50% of the time.

Bonus Qualifications

• Ability to troubleshoot complex technical issues using a combination of mechanical skill and system‑level data.
• Knowledge of electrical power distribution and industrial control systems to better assist with system‑level testing.
• Experience interacting directly with customers in a technical capacity.

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

Compensation and benefit information is based on Mainspring Energy’s estimate as of the date of publication and may be modified in the future. Pay within the range will depend on job‑related factors such as location, experience, education, and skills. New hires typically receive pay within the starting base pay range, with opportunities to increase pay over time.

AI Tools Disclosure

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans.

Location and Salary

This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location and experience. In addition to base salary, Mainspring offers pre‑IPO stock options and benefits.