Flow Engineering has successfully raised $50 million in a Series B funding round, valuing the company at $750 million. Co-leaders of this round were Antonio Gracias and Gavin Baker. Gracias is the founder of Valor Equity Partners, and Baker leads Atreides Management.
Sequoia Capital also participated in the round, having previously led Flow's Series A. Creditors included Human Capital, Evantic, SV Angel, Odyssey, and EQT. Other participants included Thomas Wolf, co-founder of Hugging Face, and Jonas von Malottki, Chief Information Officer at Mercedes-Benz.
Formula 1 champion Nico Rosberg also invested. Roelof Botha from Sequoia joined Flow's board of directors as an independent director and also made personal investments in the company. Flow reported that Rivian conducted an evaluation of 30 tools before selecting its platform.
Flow develops an agentic platform designed for complex hardware engineering programs. This platform uses AI agents to track design changes across various engineering systems, helping teams propagate updates and verify results.
Artificial intelligence has significantly transformed software development over the past year, allowing many leading companies to use AI to write a substantial portion of new code, reducing development cycles from weeks to hours. Flow believes that hardware engineering is approaching a similar transformation, but hardware development involves far more interconnected requirements.
Since a single design change can affect mechanical, electrical, and software systems, engineers must verify systems against millions of requirements and constraints, including technical specifications and regulatory standards. Flow's goal is to automate this integration and verification process using AI agents to reduce hardware iteration cycles from months to days.
Since announcing its Series A last October, the company has expanded its client base. New clients include General Motors PPU, Rivian, and Volkswagen’s RV Tech venture division. They have also joined by Anduril, Stoke Space, Intuitive Machines, and Pacific Fusion. These are added to existing clients such as Joby Aviation, Astranis, and Radiant Industries.
Flow claims that 96% of its clients learn about the platform through inbound interest. The company also notes that category leaders in several hardware sectors use its platform. An example of this expansion is Rivian's adoption: Flow's user base at Rivian grew from 40 to 1,500 users in seven months, and Rivian engineers execute millions of API calls through the platform weekly. Scott McKinsey highly praised its approach to collaborative systems engineering.
Flow plans to use the funds raised to build an AI wrapper for hardware engineering. This system will allow advanced AI models to safely interact with sensitive engineering data during live hardware development programs. The company also intends to expand review, branching, and assessment capabilities, as well as develop more robust control for increasingly complex, team-managed, sensitive, and highly regulated engineering projects.
Furthermore, Flow plans to grow its team of AI and systems engineering experts and seek FedRAMP authorization and other industry certifications to support adoption among clients operating in regulated sectors. The company's broader strategy is to apply agentic AI to increasingly complex physical systems, which Flow believes could ultimately change how advanced hardware is developed.



