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 \n Job Overview Are you a hardware-software hybrid who thrives on designing complex, automated testing architectures? Do you prefer the challenge of driving rigorous manufacturing test strategies and leading root-cause analysis on complex yield issues over routine, single-domain design tasks? Mainspring Energy is looking for a highly autonomous, intellectually curious Senior Test Development Engineer to join our core Electrical Engineering organization. Unlike traditional test engineering roles confined to running basic scripts or simple end-of-line checks, this is a high-impact engineering position where you will design sophisticated electro-mechanical test fixtures and lead complex technical escalations with our top-tier contract manufacturers. Working alongside a specialized team of expert test engineers, you will have the execution autonomy to establish rigorous test coverage standards, build custom test hardware from the ground up, and directly elevate the reliability of our revolutionary power generation fleet.
Responsibilities Establish Mainspring’s overall test strategy for circuit boards and electrical assemblies Develop test
requirements and translate them into a variety of testers, from manual screening tests to fully automated testers Design and integrate complex hardware test fixtures, including mass interconnect solutions and swappable bed-of-nails systems Determine which projects to insource and which to outsource. For outsourced projects, you will manage external partners that are developing and building testers Deploy test systems at our manufacturing partners’ facilities to capture quality issues earlier in the build process Drive test coverage improvements and manage technical escalations with contract manufacturers (e.g., optimizing Flying Probe, ICT, and AOI test coverage) Collaborate with product design engineers to improve their designs for manufacturability (DFM), testability (DFT), and cost reduction Validate test systems and production yields using statistical data analysis tools (e.g., GR&R, Cpk, SPC)