Flow provides new-age engineering companies with a requirements tool that is built specifically for their needs and allows them to focus on engineering ground breaking products.

Flow raises __$23M Series A__ from <img src="//images.ctfassets.net/c2mtbunjxyfe/DiQDL1MjhDqypgU1DqWEG/1a969dc161a43de7498a3bd5d1686ffa/Frame_48.svg" alt="Sequoia" height="12"/> 

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Humanity’s most important re-usable rockets, autonomous aeroplanes, SMR’s, humanoid robots and self-driving cars - are developed faster, cheaper and safer on Flow. The next generation of hardware is built natively on Flow.  

![Hardware eras](//images.ctfassets.net/c2mtbunjxyfe/6WRDgtQudSqpvA4WhOMQYs/20f0e8c06d37ec079e0489cdf50672c1/hardware_eras_-_5.jpg)

With every generation, systems engineering / complexity increases, forcing humanity to change how they work:

__Era 1: The Analogue Era__
*1940-1980s*
The Wright Brothers, Apollo, the Model T. 
We designed everything on pen and paper. Blackboards. Drafting Tables, Physical Test. 

__Era 2: The Digital Era__
*1980-2020s*
The 747, the Ford Focus, the Space Shuttle. 
We moved from paper to software. Drafting to CAD. Blackboards to spreadsheets. Functional complexity grew, but tools kept pace—mostly.

__Era 3: The Iterative Era__
*Today - Future*
This is the age of Re-usable Rockets, of Self-driving cars and of Humanoid Robotics. 
Today, system complexity has exploded. It’s not just changes in one domain - it's deeply cross-functional engineering.

### Iterative Hardware: Bottoms Up, Cross-Functional and Fast

The best companies of our era operate much more like software companies than traditional NASA programs. 

They iterate in months, not decades. They work bottoms up, not just top down. They operate in thousands of tiny build, test, fly, iterate loops, not just one giant V+V sprint.  

This is the era of: __Iterative Hardware Development__. From Waterfall to Agile. From top down to bottoms up. From releases in Decades to Months. Iterative Hardware 

Today, a single change in Excel ripples into Python, shifts CAD, alters COG, and throws off simulation breaking requirements -> stalling a major program. One tiny missed update can bring a program to its knees. 

But there’s a problem: our systems are integrated - but our tools are siloed. This makes cross-functional collaboration a nightmare. 

### Flow: The Requirements Tool for Iterative Teams

Flow is a next generation Requirements Tool. It’s purpose built for cross-functional, iterative teams to design, build, test, verify and iterate complex hardware systems massively faster. To bring software development speed to hardware systems engineering.

Requirements have changed. They are now living, breathing Design Criteria: Mass, Temperatures, Pressures, Signals and Interfaces. They are used not just by Systems Engineers - but by every Mechanical, Electrical, Software, Domain Engineer as the source of truth for their current design decisions.  These requirements change daily, not annually - and need to be tied deeply into design tools like Excel, Python, Simulation, and CAD.

Flow is becoming the nervous system for iterative teams — an integrated systems tool that sits at the heart of your organization, connecting every change, every decision, every iteration.

In two years, Flow has become the default platform for next-generation hardware teams.

### San Francisco - Flow’s New Home

This is a global movement, but its epicenter is in America. That’s why we’ve relocated our HQ to San Francisco.   

We’ve raised __$23M from Sequoia Capital, Patrick and John Collison (Stripe) and David Helgason (Unity)__ to enable next-gen hardware companies to design, build, test and iterate as quickly as software companies. We are welcoming __Roelof Botha__, Sequoia’s Managing Partner, to our board.

We’re honored to welcome __Sequoia’s Managing Partner Roelof Botha__ to our board and thrilled to have __John and Patrick Collison__ join as advisors.

Our mission is simple: __Push humanity to design products faster, simpler, and safer than ever before__. If you are interested in contributing to it - please reach out directly.

The future of manufacturing is iterative – and it’s being built on Flow.

[Book a demo](/demo) | [Join us](/about-us)

— Pari & the Flow Team

[youtube](https://www.youtube.com/watch?v=XP3mx8-MaNU "Welcome to the Iterative Era")


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