Choosing the right stack for what the product actually needs; how its data is stored and secured; which parts to build and which to buy; where it's hosted and how it scales. I make those calls, explain them without the jargon, and put them in writing, so you can always tell your client why it's built the way it is.
When scope shifts, and it will, I'll be on the call under your brand, as part of your team, weighing each request against budget and timeline so your client hears a clear trade-off, not a surprise invoice. Senior technical leadership for exactly as long as the project needs it; no salary, no recruitment, no bench time.