Senior R&D Mechanical Technician

Mainspring Energy; Menlo Park (CA); On-site; USD 70,000 - 110,000; Full time

Benefits offered by this job

401(k)

Pre-IPO stock options

Vacation and sick time

Vacation and sick time

Job summary

A leading innovative energy company in Menlo Park is seeking R&D Technicians to join their team. This role involves hands-on mechanical assembly and repair, contributing to the development of cutting-edge generator technology. Candidates should have a minimum of 6 years of experience and a strong commitment to safety. The position is onsite and offers full benefits, including pre-IPO stock options. If you are enthusiastic and resourceful, apply to join an empowering and growing environment.

Qualifications

• Minimum of 6 years of hands-on experience with mechanical assembly and/or repair.
• Experience with automotive or heavy equipment assembly is a plus.
• Demonstrated commitment to safety and ability to learn quickly.
• Experience with precision measuring instruments capable of measurements down to .001", using tools such as micrometers, bore gauges, and gauge blocks.
• Metal fabrication skills are considered a plus.
• CDL Class A is a plus.

Responsibilities

• Collaborate with a build and test team on next-gen generator development.
• Construct cutting-edge components and assemblies.
• Troubleshoot, repair, and reimagine components.
• Conduct thorough inspections of test units, documenting findings to provide crucial insights for the engineering team.
• Proactively identify and implement improvements that enhance both the safety and efficiency of our groundbreaking work.

Skills

Mechanical assembly

Problem-solving

Precision measurement

Self-motivation

Education

CDL Class A

Tools

Micrometers

Bore gauges

Gauge blocks

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. and is scaling rapidly for international expansion.

We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.

Our Values

Pragmatic Optimism. Building a new category of world‑class power generation requires 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, and apply deep technical rigor to building world‑class products. We strive for excellence and act as leaders with the humility to acknowledge our challenges.

Proactive Collaboration. The integration and cross‑disciplinary nature of Mainspring’s business requires seeking others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to partners and customers.

Job Overview

We are seeking enthusiastic and resourceful individuals with a strong mechanical background to join our growing Research & Development team as R&D Technicians. If you have a knack for mechanics, enjoy tackling novel challenges, and possess a passion for improvisation and creative problem‑solving, this could be the perfect opportunity for you.

In this role, you will be instrumental in the development of our innovative generator technology, working closely with our talented engineering team at our dedicated R&D Center of Excellence in Menlo Park. You will experiment, build prototypes, and contribute directly to bringing affordable, dispatchable, and clean energy to the world. Our facility emphasizes ergonomics, safety, and a supportive work environment, with at least 30% of your time spent in comfortable indoor settings. We offer full benefits, including vacation and sick time, 401(k), and pre‑IPO stock options.

Responsibilities

• Dive headfirst into next‑gen high‑efficiency generator development, collaborating with a dynamic build and test team to push the boundaries of energy technology.
• Leverage your mechanical prowess to construct cutting‑edge components and assemblies, following procedures while identifying opportunities for innovation.
• Work with engineers to troubleshoot, repair, and reimagine components, directly influencing the evolution of our designs.
• Conduct thorough inspections of test units, documenting findings to provide crucial insights for the engineering team.
• Proactively identify and implement improvements that enhance both the safety and efficiency of our groundbreaking work.

Qualifications

• Minimum of 6 years of hands‑on experience with mechanical assembly and/or repair.
• Experience with automotive or heavy equipment assembly is a plus.
• Proven ability to learn quickly, a strong sense of self‑motivation, and a demonstrated commitment to safety.
• Experience with precision measuring instruments capable of measurements down to .001", using tools such as micrometers, bore gauges, and gauge blocks.
• Metal fabrication skills are considered a plus.
• Possession of a Class A Commercial Driver’s License (CDL) from California is a plus.

We understand that not everyone will meet every requirement. We encourage applicants who are passionate about our mission and willing to grow with us to apply. Mainspring can sometimes be flexible in shifting responsibilities or identifying better fits.

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, protected veteran status, or disability.

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. Along with the base salary, Mainspring offers pre‑IPO stock options and benefits.

Additional Information

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