First Resonance Employee Directory

Software DevelopmentCalifornia, United States11-50 Employees

First Resonance is a software company based in el Segundo, California, that develops the ION Factory Operating System. The platform provides a flexible, data-driven environment to manage parts, processes, and information across the factory, linking production with procurement and quality workflows. It is designed for hardware manufacturers across sectors such as aviation, energy, and automotive, as well as startups and larger producers building complex products. Its customers range from startups to established manufacturers pursuing complex hardware programs across aerospace, energy, and industrial sectors. In 2025, the company announced the release of ION Intelligence, an updated Factory OS with new capabilities and an accompanying marketplace.

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