Notes from the Build | Castle Digital Blog

Who decides? Cover illustration: a workflow with two completed steps and a locked decision gate waiting for sign-off.

AI Strategy

What the AI drafts, and what a person decides

"Human in the loop" usually means a confirm button. How we drew the line between AI work and human decisions in Nooma, and how to draw it in your own product.

Alex Burton

October 2, 2026

5 min read

Craft, not prompts. Cover image: OLi Tutor on a laptop and a phone, with a live voice role play session running on the phone.

AI Strategy

An AI tutor is not a chatbot with a teaching prompt

Most AI tutors are a general model with a teaching prompt. Why we built OLi Tutor's craft into the system instead, and the lesson for any specialist AI product.

Alex Burton

October 2, 2026

5 min read

Show the decision. Cover illustration: a privacy policy with a highlighted clause on automated decisions and a 10 December tab.

AI Strategy

Using AI with personal information? What changes on 10 December 2026

From 10 December 2026, some uses of AI with personal information must be disclosed in your privacy policy. What the change means for products that use AI, and the design decisions that reduce your exposure.

Alex Burton

October 2, 2026

6 min read

Event Recap

AI literacy isn't enough: HR needs workflows that can keep up

Adobe's Nidhi Chopra on why trained employees still sink into old processes, and three ways Adobe HR rebuilt the workflow instead.

Alex Burton

September 21, 2026

3 min read

Who becomes the expert? The HR stage and audience at HR Tech Fest Sydney.

Event Recap

Who becomes the expert when AI does the groundwork?

A question from the floor at HR Tech Fest Sydney that nobody could answer: if graduates never do the grunt work, where does expert judgement come from?

Alex Burton

September 21, 2026

3 min read

Codify first, then automate. The Harnessing Generative AI panel on stage at HR Tech Fest Sydney.

Event Recap

Codify first, then automate: what five HR leaders said about GenAI in practice

Atlassian, CBRE, Anglicare, Loan Market Group and Latitude Financial on where GenAI is actually working in HR, and why it starts with writing down what you know.

Alex Burton

September 21, 2026

3 min read

Event Recap

AI first, human where it matters most: what One NZ's rollout means for HR teams without a telco budget

One NZ put AI in front of 2,500 staff and found that learning didn't change the work. What that means for HR teams without a telco budget, and how it shaped Nooma.

Alex Burton

September 21, 2026

5 min read

Bubble to Kotlin. Cover illustration: an oversized phone showing an app screen, with a pink Ready for review pill.

Beyond No-Code

From Bubble to Kotlin: When to move your Android app into Android Studio (without blowing up your runway)

When a Bubble-built Android app should move to Kotlin and Android Studio, and how to stage the migration so it doesn't eat your runway.

Alex Burton

July 29, 2026

4 min read

Leave Bubble, keep your runway. Cover illustration: three stages from no-code through rebuild to production, with the rebuild stage highlighted.

Beyond No-Code

Hitting Bubble’s ceiling? A practical migration plan that won’t torch your runway

The signs you have outgrown Bubble, what is worth keeping, what needs rebuilding, and how to plan a migration you can actually afford.

Alex Burton

July 17, 2026

4 min read

Notes from the build.

HR Tech Fest Sydney, day one: the tools are ready, the work isn't

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