Websites, apps and ads that sell.

More than ten years writing software, and my own stores as the lab. Apps, platforms, websites, SEO and ads: I build it, test it on my own business and turn it into products you can use.

AppsPlatformsWebShopifySEOMeta Ads creatives
10+years writing software
3own stores as the lab
6areas, from code to sales
1product launching, more on the way

Kafkine products.

What I build for myself and already works, packaged so you can use it without depending on anyone.

From code to sales.

01

Apps and platforms

Product, backend and automations with AI agents.

02

Websites

Designed in HTML first, fast and easy to maintain.

03

Shopify

Custom themes and fewer apps billing you every month.

04

SEO

Technical and content, so people find you without paying per click.

05

Meta Ads creatives

AI images, videos and UGC, made to test fast and keep the ones that sell.

06

Applied AI

Agents working on real code, with rules and safety.

Real work.

What I've built, live or on the way, with its real status.

Anita's Home
Anita's Home

Tableware store: 31 parts designed and built on a free theme, plus an email pop-up and a server that creates products from Claude.

Shopify · Web

NAGI
NAGI

One-product store on Refresh and its Meta ad set, with AI-made creatives.

Shopify · Ads

OSSAWALK
OSSAWALK

Full launch: market dossier, unit economics, science article, product page with calculator and campaign.

Shopify · Ads · Estrategia

Hoodwalk
Hoodwalk

Mobile app for food routes around the city, with a check-in at every stop.

Apps

  • Patients
  • Appointments
  • Sessions
  • Invoices
Balance Terapia

Management platform for a clinic: patients, appointments, sessions and invoices.

Apps · Web

ODISEA
ODISEA

Website for a gamified couples-travel concept, with a season per country.

Web

KB-75M
KB-75M

Modular 75% keyboard: RP2040 board and 3D-printed shells that swap with magnets.

Hardware

OpenAI23/31

Gemini21/31

correct answers on a bar's own data
Barra

AI assistant for bars: reads delivery notes and answers questions about the business. Two models compared on 31 questions.

IA

PanoramaSublyG
Panorama · Subly · Glucosa

My own apps: personal finance over Open Banking, a subscription tracker and a glucose log synced across two phones.

Apps

How I work.

1

Mine first

Nothing becomes a product before it works in my own stores. If it breaks, it breaks at home.

2

Design before code

You see and approve what it will look like before anything is built.

3

Measured, not promised

Real numbers, or examples labelled as examples. Never invented testimonials.

4

Fewer dependencies

Fewer apps, fewer fees, less waiting on someone else. You stay in control.

Chema at his desk, with code on screen
my desk, where it all happens

Hi, I'm Chema.

I'm from Seville and live in Almería, with my daughter and another one on the way. I've been building things on the internet since I was 14.

For more than ten years I've built apps, platforms and websites for all kinds of clients, and I run my own stores, where I test everything before I offer it.

What I enjoy most is solving someone's real problem. With AI I do it far faster and better, and Kafkine is where it all comes together.

Chema

Work with me.

I build what you need, from the app to the campaign. Before we start you know what it costs, how long it takes and what it should achieve, and you pay in monthly instalments.

  1. 1
    You tell me what you wantThrough the form or by email. No commitment.
  2. 2
    A fixed quoteScope, timing and price in writing, before anything starts.
  3. 3
    Real data and a forecastI start from your numbers (traffic, sales, costs) and show what to expect, with clear assumptions.
  4. 4
    You pay monthlyNo big upfront payment. You see progress and results every month.

tell me about your project

What do you need?

I reply within 2 working days with the questions I need for the quote.

Let's talk.

About a project, a question on a product, or just to follow what I build.