active · Approximate location
Staff Manufacturing Process Engineer
otherMenlo Park, CA
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AT A GLANCE
NPI - New Product IntroductionSeniorOtherSalary
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 Generato
About the role
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
Responsibilities
- Develop, validate, and optimize manufacturing processes from early prototype builds through high-volume production
- Lead manufacturing process validation activities using PFMEA, DOE, capability studies (Cpk), and GR&R
- Drive cross-functional, closed-loop risk mitigation plans by partnering with Design Engineering, Quality, and Operations
- Establish manufacturing readiness plans, process validation strategies, and quality gates for new product introductions
- Partner with Industrial Engineering to evaluate cycle times, line balancing, and resource utilization using Yamazumi charts and time studies
- Drive touch-time reduction initiatives through process optimization, improved assembly sequencing, ergonomic improvements, fastening strategies, automation opportunities and subsystem testing
- Lead structured root cause investigations using 8D, 5 Whys, DOE, and statistical analysis to improve first-pass yield and process capability
- Identify and eliminate manufacturing bottlenecks to improve throughput, labor productivity, and overall equipment effectiveness (OEE)
- Champion Lean Manufacturing, error-proofing (Poka-Yoke), standardization, and continuous improvement initiatives across production
- Own the transition of assembly processes from prototype builds to scalable production systems
- Partner with Quality, Supply Chain, Operations, and NPI teams to successfully launch new manufacturing processes
- Support factory layout development, production line design, capacity planning, and equipment selection
- Support new factory launches, manufacturing transfers, and production ramp activities across domestic and international sites
- 7–10+ years (Senior) or 10–15+ years (Staff) of manufacturing/process engineering experience supporting complex electromechanical products
- Expertise in PFMEA, Control Plans, Process Flow Diagrams, DOE, SPC, 8D, Cpk, and GR&R
- Experience developing scalable manufacturing processes and supporting New Product Introduction (NPI) from prototype through high-volume production
- Experience developing assembly equipment, fixtures, gauges, and automation systems
- Strong knowledge of Lean Manufacturing, Six Sigma, Kaizen, line balancing, Yamazumi charts, time studies, and capacity modeling
- Proven ability to lead cross-functional technical initiatives and influence engineering decisions through data
- Experience working in fast-paced NPI environments with evolving designs and manufacturing challenges
- Experience in automotive, aerospace, energy, or other high-volume electromechanical manufacturing environments
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