Flow Engineering raises $50M Series B at $750M valuation
Flow Engineering, a 3-year-old AI hardware design startup, raised $50M Series B led by Valar Equity Partners and Atreides Management, with Sequoia Capital participating.
Flow Engineering, a three-year-old startup based in San Francisco, announced on Wednesday that it has raised a $50 million Series B round at a $750 million valuation. The round was co-led by Antonio Gracias of Valar Equity Partners and Gavin Baker of Atreides Management.
Sequoia Capital participated in the round, as did former Sequoia partner Roelof Botha as an individual investor. Botha has joined Flow Engineering's board.
Flow Engineering offers AI tools for hardware design. The company names Anduril, Rivian, Joby Aviation, General Motors PPU, RV Tech, and Stoke Space among its customers.
In October 2025, Sequoia Capital led Flow Engineering's Series A round, according to techcrunch.com.
Quick answers
How much did Flow Engineering raise in its Series B?
$50 million.
Who led Flow Engineering's Series B round?
Antonio Gracias of Valar Equity Partners and Gavin Baker of Atreides Management co-led the round.
What is Flow Engineering's valuation after the Series B?
$750 million.