Valor, Atreides, and Sequoia back AI startup Flow Engineering at $750M valuation

Flow Engineering has closed a $50 million Series B funding round that sets its valuation at $750 million, the company disclosed. The financing was co-led by Antonio Gracias of Valor Equity Partners and Gavin Baker of Atreides Management. Sequoia Capital, which led Flow’s Series A last October, also participated in the round.

Former Sequoia partner Roelof Botha invested as an individual and will take a seat on Flow’s board. The company positions its software as AI agents that bridge CAD models, product requirements, simulation outputs and testing data to streamline hardware design workflows.

Flow lists customers spanning automotive, aerospace and defense, including Anduril, Rivian, Joby Aviation, General Motors PPU (a GM and TWG Motorsports joint venture), RV Tech (a Rivian and Volkswagen joint venture), and Stoke Space. The startup says its tools aim to reduce the friction engineers face when reconciling design files with performance and compliance constraints.

The new funding follows Flow’s Series A lead from Sequoia last year and comes as venture investors continue to back companies applying generative AI and agent techniques to domain-specific engineering problems. Flow’s backers include firms with prior investments in companies tied to advanced hardware and aerospace sectors.