STARTUP CASE STUDIES

From Seed to a €670 Million Valuation: Backing the System of Record for Hardware Teams

Company
Flow Engineering
Sector
Deeptech & AI
Country
UK/US
Year invested
2025

valuation, September 2026

raised across the Series A and Series B

engineers at Rivian running R1 and R2 programs on Flow, up from 40 in four months

Backed By

Flow Engineering builds software for hardware teams that build at agent speed. Its platform connects requirements, design, CAD and testing in one integrated system. Odyssey Ventures backed founder Pari Singh at Seed in 2025 and took part in the Series A. The company is now valued at €670 million.

Flow is becoming the infrastructure the next era of physical invention gets built on.

A 7X MULTIPLE ON THE SEED

Flow raised a $50 million Series B at a €670 million valuation, less than a year after its $23 million Series A. That is a 7x multiple on Odyssey's investment, held at its marked value. Across the two rounds the company has raised $73 million. The Series B was co-led by Antonio Gracias of Valor Equity Partners and Gavin Baker of Atreides Management, with continued participation from Sequoia, which led the Series A. Those investors have also backed Tesla, Nvidia, SpaceX and Anduril.

THE PRODUCT

Flow gives hardware teams a shared system of record: a connected graph of requirements, tests, interfaces and design decisions, where a change in one place shows its effects everywhere immediately. Roelof Botha, who joined Flow's board personally, calls Flow "GitHub for hardware". Flow has been named category leader in defense, energy, robotics, autonomy and aerospace.

"We've loved working with Ali and Odyssey. Their experience as operators and founders has been fundamental to our success, as they have worked with us in the trenches side by side with no ego - on everything from big strategic decisions to fundraising to tactical issues day-to-day. They've had our backs from day one."

Pari Singh, Founder & CEO

TRACTION WITH ENGINEERING TEAMS

Rivian started on Flow with 40 engineers. Four months later, 1,500 engineers were running its R1 and R2 programs on the platform. Joby Aviation, Astranis and Radiant Nuclear also build on Flow.

THE FOUNDER

Pari Singh is Founder and CEO of Flow Engineering. He built the first version as a tool for himself while studying hybrid rocket engines at Imperial College London. It linked requirements, models and simulations into one live loop. Before founding Flow, he worked at BAE Systems and BP.

WHAT CHANGED AFTER THE INVESTMENT

Odyssey worked with Flow Engineering in three areas:

- US expansion: Odyssey helped Flow move from the UK to the US, with network access and operations support. Flow moved its headquarters to San Francisco.

- Follow-on fundraising: support with both the Series A and the Series B, including pitching coaching and introductions to investors.

- Recruitment: support with important executive and advisor hires.

THE INVESTORS

The notable co-investors in later rounds are Sequoia, Valor Equity Partners, Atreides Management, Evantic and Human Capital. Individual investors include Thomas Wolf of Hugging Face, Nico Rosberg, Formula 1 World Champion, and Jonas von Malottki, CIO of Mercedes-Benz. The latest funding provides capital for scale-up and growth.