Jason KiStudio
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Product engagement· Three-month minimum · dedicated

From prototype to product.

The gap between a concept prototype and a usable product is large — and closing it is the job. A product engagement means a senior developer's full attention for a minimum of three months: the design and UI/UX, the architecture, the build, the deployment, and the iteration after real users arrive.

What it’s for
  • A customer-facing app that has to earn users' trust
  • A platform your business will run on
  • A validated prototype that now needs to become real
  • A product idea where design quality is part of the bet
What’s included

Product design, not just code

The UI/UX is part of the work, not an add-on. Products win or lose on whether people want to use them.

Weekly working software

Every week ends with something you can click, use, and react to — not a status deck.

Architecture that survives success

Built for the second year, not just the demo: auth, data model, evals, monitoring, cost control.

Deployment and handover

The engagement ends with the product live and a handover your team can actually run — or a retainer if you'd rather I keep running it.

How it works
01Describe it

What the product does, who it's for, and what exists today — a deck, a prototype, or just conviction.

02Scoping

A working session on scope and sequence, then a written engagement plan: what lands in month one, two, three.

03Build in weekly loops

Design → build → review, every week. Direction changes are expected; the loop absorbs them.

Fit

A good fit when

  • You're committed to a product, not exploring an idea
  • Someone on your side can make decisions weekly
  • Quality of the experience matters to the business model

Probably not, when

  • The work is a well-bounded internal tool — that's a custom build
  • You need a large team tomorrow — this is one senior developer, deliberately
Start a project

Have a workflow, tool, or product that needs building?

Send me the messy version. I reply with an honest take — what I'd build, what I wouldn't, and what it would cost.

Start a project