"Speed is easy. Judgment is earned."

I'm David Ashenden. Twenty-five years, four rungs, in that order: engineer, architect, product lead, exec. I climbed it the hard way round, which means I've written the code, drawn the system, run the team, and sat in the room where a decision gets signed off with somebody's job attached to the answer. Subversive is what I built once I'd done all four.

The last three years have been spent specialising in AI, innovation and adoption in enterprise settings, for a client I still work with. I don't name them. Not because there's nothing to check, but because that's the agreement, and I keep the ones I make. On one programme there, the number of passes it took to get from a stated requirement to a signed-off architecture fell by 75%, by the client's own count. That's not a slogan. That's what happens when somebody with judgment gets between the idea and the build.

Most engagements start the same way: two weeks, a fixed fee agreed before I start, and a first call that ends with a written list of what to stop. Not what to add. Most of the value in any business sits in the projects nobody has the standing to kill, and I turn up with no loyalty whatsoever to the decision that started them.

That fortnight is the first thing you buy. It is not the thing I sell. What usually follows is a working relationship that lasts: fractional CPTO, or somebody sat beside whoever is actually carrying the decision. A finance director. A chairman. A CTO who is three good people short and knows it. Where there is already a CTO in place I work to them, not over them, because the alternative is a turf war nobody asked to fund. Greenfield or brownfield, it makes little odds. Nobody who rings me is confused about their own business. They are simply unequipped for the particular decision sat in front of them, and that is a much easier problem to fix.

Why "Subversive"?

Because telling the truth in a corporate meeting room is about the most subversive thing left. Rory Sutherland once observed that people who want to win the argument will ignore human truths to protect their model. That happens inside companies of every size, and somewhere in the building everyone already half-knows it. Nobody in the room has permission to say so out loud. I'm that permission. No hundred-slide deck nobody reads twice, no workshop dressed up as strategy. Just the work that moves the number.

The Network

I lead every engagement myself, which is a formal way of saying you get the person you met. Nobody here works the pitch and then hands you to a stranger once the contract's signed. When a job needs a specialist, and some do, I bring one in by name, on my paper, under my insurance. No juniors, no padding, no unnamed "senior consultant" quietly billed at graduate rates.