Projects · Applied engineering

Proof isn’t a promise. It’s a system running.

A few projects, told in full: the problem, the architecture and what changed in the operation. And one of them you can test right now — the Guide, right here.

GuideAI assistant · replies now

To show you what matters first:

What do you want to see?

Private conversation. You decide what reaches Arthur.

I want a project like this See the projects

Complete ecosystem
AI in production
Tested code

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02Featured · KROFH

Sales, briefs, scheduling and production. A single platform.

KROFH lived what many businesses live: every stage in a different place. Arthur designed and built an ecosystem — a public website integrated with a multi-tenant internal platform — where each module serves one stage of the operation, with AI helping in production.

Role: Tech Lead · Architecture · Full-stack · UI/UX
Scope: Six connected modules, with role-based access
Technology: Next.js · TypeScript · Firebase · Gemini · Meta Graph API

See the full case Visit the public website

03AI in production

You’re talking to one of the projects.

The Guide isn’t a generic chat. It’s an agent with a curated knowledge base, closed actions and clear limits — the same kind of agent that can serve your clients.

Curated knowledgeAnswers only from what’s documented. When it doesn’t know, it says so.
Closed actionsIt can only open WhatsApp with a message you review, or point to pages on the site.
Real-time voiceTalks by voice with Gemini Live, when you turn it on.
Validation and limitsInputs validated by schema and rate-limited against abuse.
Tested end to endFlows verified with automated browser tests.

Test it with a hard question

In your business, the same design can serve clients on WhatsApp and your website, with your rules and tone.

I want an agent like this

04The lab

Experiments with code. Not with promises.

What’s being tested right now — and what each experiment means for a business.

001 · Agents · orchestration

A concierge that prepares the conversation.

This website’s assistant uses Gemini with a curated brief, usage limits and a short history. When there’s a need, it prepares a summary you review before moving to WhatsApp.

For your business: An assistant that qualifies the lead and hands the team a ready summary.

Gemini · SSE · Zod · Redis

002 · Systems · interfaces

An object that explains the idea.

Three interlocking metallic modules, modelled in Three.js. Different parts, one purpose. The object responds to the pointer and only loads when requested.

For your business: Products and presentations that explain themselves without slowing the page.

Three.js · React Three Fiber

003 · Automation · visual computing

From process to rendered scene.

A pipeline that renders 120 frames of a Three.js scene in Chromium and encodes MP4 and WebM with FFmpeg, with no manual steps.

For your business: Production tasks that run on their own, from script to final file.

Playwright · FFmpeg · GSAP

004 · Applied AI · brand context

Scripts that know the brand.

In the KROFH ecosystem, AI analyses references and writes scripts with the context of each brand’s guidelines, inside the production flow.

For your business: AI that writes in your company’s voice, within your rules.

Gemini · Multimodal · FirebaseSee it in the case

Every experiment exists in this repository or in the KROFH case. New ones are added when there is a demo or code to show.

05What’s next

The next case could be your operation.

Start my project

06The decision

You’ve seen what was built. Now, what shall we build?

I don’t know yet what you’re looking for — that’s fine. The conversation starts wherever you like.

What you want to build: Choose
What caught your eye: Choose
Time at stake: Choose

Shall I take this summary to Arthur?

Continue on WhatsApp Book a diagnostic

A direct conversation with Arthur. You review the message before sending.