About Briu

Good advice should lead to better work.

Briu starts hands-on with the people doing the work, then turns what proves useful into reliable workflow software built from reusable tools.

Briu (BRIU LLC) is an AI coaching and workflow software company in Seattle, Washington, founded in 2026 by Lucas Cairns. Briu OS is our internal operating system, delivery engine and proving environment. Customers never need to buy or adopt it.

Working with teams on site around Seattle and the Eastside, and remotely across the US.

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The founder

Hi, I’m Lucas.

I started Briu to close the gap between knowing AI could help and having something useful in your hands.

Learned in production

Before Briu, I spent two years co-founding and building Subsights, an AI chatbot product for real websites. That work was a practical education in the difficult part of applied AI: reliability across different customers, content, hidden exceptions, stale information, product constraints, and systems that can look healthy while returning the wrong answer.

Briu as a working system

I began Briu in early 2026. Briu OS is Briu’s internal operating system. It connects research, customer context, proposals, administration and engineering, and it is where we test ways of working before recommending them.

Agents help with the work. People retain authority over signatures, payments and customer commitments. Read how Briu OS works.

A clear business boundary

Subsights remains a separate business. It is not presented as a Briu customer or a Briu-owned product. It is a real-world proving ground where the operating method has to survive engineering, customer support, sales, and day-to-day business work.

Our standard

Useful. Accountable. Built to last.

Fit before technology

Start with the actual work. Sometimes the right answer is coaching, ordinary software, or no new tool.

Evidence before claims

Show what works, how it was checked, and where people still need to decide.

Clear responsibility

Agree on scope, access, acceptance and ownership before the work begins.

Where the name came from

The arch is the shape the weight makes.

Drag to inspect. Tap to play or pause.

briu /ˈbɾiw/

Catalan · masculine noun

energia · empenta · coratge · ànim

energy, drive, push, courage

The Briu mark comes from a simple idea: let the structure follow the real load. Understand the work before deciding what to build.

The model behind the mark

Gaudí did not draw his arches. He hung them.

In a shed beside the church at Colònia Güell he built the model upside down: cords hanging from a board on the ceiling, each one weighted with a small sack of birdshot in proportion to the load that piece of the building would actually carry. Let go, and every cord falls into the only curve it can. He photographed it, turned the photograph over, and drew the building on top. Invert a curve that hangs in pure tension and it stands in pure compression, holding itself up with nothing propping it from outside.

The place behind the name

Barcelona became real to me through the rhythm of one household: meals around the same table, the dog, the kids’ Saturday football, and Catalan coming at me all day whether I was ready or not. The Sagrada Família stood a mile away; daily life, not the landmark, is what made the place matter.

What stayed with me was a Catalan instinct: stubborn and inventive at the same time. You see it in Gaudí, in the mountains north of the city, and in Kilian Jornet running up them. Briu came from that place. So did a rule for my work: get close enough to the real work that I stop designing like a visitor.

Briu is Catalan for energy, drive, push, courage, from the Proto-Celtic root that also gives Italian its brio. It is a written, slightly formal word rather than everyday street Catalan, and it names the thing a business needs before any of this is worth doing.

What it means for the work

The hanging chain is the part I actually run on. I do not arrive with the shape. I start with where the load falls: who is accountable, what breaks at month-end, which exception eats every Tuesday, what someone is still doing by hand at nine at night because the system never covered it. The structure comes out of that, small enough to stand on its own. When a support point moves, because a tool changed or someone left or a rule got rewritten, the model re-settles into a new shape. That is the design working rather than the design failing.

The mark at the top of this page is that arch. Three nested ribbons, cut flat at the bottom, with no base and no ground line: a fragment of a larger structure, open to what comes next.

A direct conversation

Tell Briu what you are trying to change.

Bring a project, question, team concern, or workflow that needs more support.

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