California-Based Flow Engineering Secures $50M in Series B Funding

Flow Engineering, a San Francisco, CA-based provider of an agentic platform for hardware development, has secured $50 million in a Series B funding round at a $750 million valuation.

The round was co-led by Antonio Gracias (founder of Valor Equity Partners) and Gavin Baker (Managing Partner at Atreides Management), with participation from Sequoia Capital, Human Capital, Evantic, SV Angel, Odyssey, EQT, Thomas Wolf, Jonas von Malottki, Nico Rosberg, and Roelof Botha.

The company plans to use the funding to expand its review, branching, and evaluation capabilities and grow its engineering teams across AI and systems engineering.

What is Flow Engineering?

Flow Engineering provides an AI-powered platform for hardware development and systems engineering.

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The platform uses AI agents to help engineering teams track design changes, coordinate updates across mechanical, electrical and software systems and verify that designs continue to meet technical and regulatory requirements.

Flow aims to help hardware companies reduce development cycles from months to days while maintaining engineering standards.

How Much Funding Has Flow Engineering Secured?

Flow Engineering has secured funding across multiple rounds, with the latest Series B bringing its valuation to $750 million.

The company did not provide a total funding figure in the information provided.

Who Invested in Flow Engineering’s Series B?

The $50 million Series B was co-led by Antonio Gracias and Gavin Baker.

Other participating investors included Sequoia Capital, Human Capital, Evantic, SV Angel, Odyssey, EQT, Thomas Wolf, Jonas von Malottki, Nico Rosberg, and Roelof Botha.

Why the Funding Matters

Flow will use the new funding to expand its review, branching, and evaluation capabilities.

The company will also grow its engineering teams across AI and systems engineering, pursue FedRAMP authorization and other certifications for customers in regulated industries, and expand its sales team.

Who founded Flow Engineering?

Flow Engineering was founded in 2023 by Pari Singh.

The company is headquartered in San Francisco, California.

"Every hardware company now has to decide how fast it will adopt AI, and those that move first will win their markets," said Pari Singh, Founder and CEO of Flow. "Flow has emerged as the de facto platform for agentic hardware. Ninety-six percent of our customers come to Flow inbound.

"We were introduced to Flow by world-class engineers we've worked alongside for years. The market pull we observed from trusted executives with an unusually high bar is rare. It's what led us to spend time with the team and the problem they're solving. This customer signal gave us the confidence to lean in and support the company at an early stage," said Gracias.

Market and Business Growth

Flow has added General Motors PPU, Rivian and Volkswagen's joint venture RV Tech, Anduril, Stoke Space, Intuitive Machines, and Pacific Fusion as customers since its Series A.

Existing customers include Rivian, Joby Aviation, Astranis, and Radiant Industries.

At Rivian, Flow's user base grew from 40 to 1,500 users in seven months. Rivian engineers now run millions of API calls through the platform each week.

The company says thousands of engineers are now building on Flow.

What Happens Next?

Flow plans to expand its AI and systems engineering capabilities while growing its engineering and sales teams.

The company will also pursue FedRAMP authorization and other certifications to support customers in regulated industries and continue expanding its hardware development platform.

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