AI hardware design startup Flow Engineering has raised $50 million in a Series B funding round at a valuation of $750 million, marking another major funding milestone for the three-year-old company.
The latest round was co-led by Antonio Gracias of Valar Equity Partners and Gavin Baker of Atreides Management. Meanwhile, Sequoia Capital, which led Flow Engineering’s Series A round in October 2025, also participated in the latest financing.
In addition, former Sequoia partner Roelof Botha invested in the company in his individual capacity and has joined Flow Engineering’s board. The company is using the fresh capital to advance its technology and make hardware development and iteration more efficient.
Based in San Francisco, Flow Engineering is developing AI-powered tools to address complex challenges in hardware design. Specifically, its AI agents automatically connect computer-aided design (CAD) drawings with product requirements, simulation results, and other testing data.
Consequently, the company aims to help hardware teams accelerate design iterations and bring development workflows closer to the speed associated with software engineering.
Flow Engineering counts several prominent companies among its customers. Its customer base includes Anduril, Rivian, Joby Aviation, General Motors PPU, RV Tech, Stoke Space, and other companies operating across automotive, aerospace, defence and mobility sectors.
General Motors PPU operates as a joint venture between General Motors and TWG Motorsports, while RV Tech operates as a joint venture between Rivian and Volkswagen. Through its AI-driven platform, Flow Engineering is targeting companies that require faster and more integrated hardware development processes.
