Senior Manufacturing Engineer

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 $816 B 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. More information can be found at www.mainspringenergy.com .Job OverviewWe are seeking an innovative and highly skilled Manufacturing Engineer to lead the design, development, and implementation of assembly tooling, material handling systems, and scalable production processes for a groundbreaking large electromechanical machine.In this role, you will play a critical role in translating product designs into manufacturable, high‑precision, and robust components and assemblies at scale. You will work closely with Mechanical Design engineers to drive DFM/DFX initiatives, process error‑proofing, and tooling robustness, ensuring efficiency, repeatability, and quality across our production lines.The ideal candidate will have a strong background in precision fixture design, material handling solutions, overhead lift assist systems, and MES systems. Experience in precision measurement and laser‑based assembly processes is a significant advantage. Additionally, this role requires end‑to‑end ownership, including sourcing, assembly, commissioning, and installation of designed systems.Join our team if you are ready to bring your expertise to the forefront of manufacturing technology, contributing to the success of our linear generator startup.ResponsibilitiesLead the design of high‑precision fixtures, tools, and equipment for electromechanical assembly and testingDevelop material handling solutions, overhead lift assist systems, and custom conveyors, joining technologies and torque/angle control nutrunnersImplement precision measuring systems and laser alignment processes for high‑tolerance assemblyEnsure all tooling and equipment meet rigorous quality and performance standardsManage end‑to‑end project execution, from concept through installation and commissioningCollaborate with cross‑functional teams, including R&D, operations, and procurement, to align manufacturing solutions with product requirementsLayout planning for future factory design initiatives and collect and document product and process requirements to feed equipment and tooling design and also define the process readiness for automation introductionOversee the manufacturing and assembly of designed tooling and equipment, ensuring timelines and quality standards are metContribute to new product development and collaborate with design engineers, offering expertise in manufacturability (DFM/DFX) and cost effectiveness of new mechanical component designsUtilize DOE, PFMEA, 8D and other industry‑standard tools and techniques to actively identify and address risks and optimize process parametersAssess the sustainability of a fabrication technology for a given part design, plan validation experiments to demonstrate initial feasibility as well as manufacturing capabilities, analyze the results and provide technical recommendationsQualificationsBachelor's or Master's degree in Mechanical Engineering, Manufacturing Engineering, or a related field5+ years of experience in manufacturing engineering, with a focus on tooling and automationProficiency in CAD software (e.g., SolidWorks, CATIA, or AutoCAD) for tooling and fixture designStrong analytical and problem‑solving skillsHands‑on experience and ability to supervise mechanical assembly, wiring, plumbing, and light machine shop skillsFamiliarity with precision measuring systems, laser alignment tools, and GD&T principlesFinite Element Analysis (FEA) capability is a plusWilling and able to travel internationally up to 15%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.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.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. If you would like more information about how your data is processed, please contact us.This position is onsite at our Menlo Park HQ . The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre‑IPO stock options + benefits.#J-18808-Ljbffr