Mateus Lara Carvalho

The Batatinha

I've worked in technology for over ten years, building projects across front-end, back-end, WordPress and other platforms. I like to understand what needs solving before I start building, and to talk through the possibilities along the way.

Let's talk See the work

Mateus Lara Carvalho seated in a black t-shirt, a tattoo along one arm, looking at the camera.

01About

Mateus, but you can call me Batatinha.

I've been working in development since 2015, on projects spanning front-end, back-end, WordPress, e-commerce and integrations. Before starting, I like to understand what needs to be done, talk through the possibilities, and figure out the best way to approach it.

I'm based in Belo Horizonte and work remotely with clients in Brazil and other countries, including the United States, Spain, New Zealand, the United Kingdom, and Canada. I speak Portuguese, English, and Spanish, and I like to keep communication simple throughout the project.

And Batatinha? It's a childhood nickname. When I was a kid, people said I looked like Batatinha from The Little Rascals. The nickname stuck.

Since 2015
Belo Horizonte, Brazil
Remote
PT · EN · ES

Tell me about your project

02Why work with me

You don't just get the deliverable.

I think along

Before starting, I like to understand the project and the reasons behind the choices. If I see another possibility, I bring it to the conversation.

01I think along

I keep it plain

I explain the decisions and where the project stands without complicating the conversation. If a problem shows up along the way, you hear about it.

02I keep it plain

I come back with ideas

I don't follow the brief on autopilot. If I find a better way to do something, I show the option and we decide together.

03I come back with ideas

I streamline the process

I use AI and other tools to automate repetitive tasks, speed up development and spend more time on what really needs attention.

04I streamline the process

Sounds right?

Then tell me what you need

03Experience

Technologies and areas that are part of my work.

01
Front-end

Interfaces and applications for web and mobile, working with different technologies and with attention to performance, accessibility and responsiveness.
- React
- React Native
- TypeScript
- JavaScript
- HTML
- SCSS
- Vue.js
- Angular
- Figma
02
Back-end

APIs, integrations and systems, using different languages and technologies according to what each project needs.
- PHP
- Node.js
- Go
- Laravel
- Symfony
- .NET
- Python
- MySQL
- REST API
- Docker
- Git
03
WordPress

WordPress projects, including custom themes and plugins, Gutenberg, ACF, WooCommerce and headless applications.
- Headless WordPress
- Gutenberg
- ACF
- Elementor
- WooCommerce
- Custom themes and plugins
04
E-commerce

Building and maintaining online stores, including themes, checkout, integrations and the other needs of the operation.
- Shopify
- Liquid
- WooCommerce
- Nuvemshop
- VTEX
05
Marketing, automation and integrations

Landing pages, tests, automations and integrations with marketing, CRM and analytics tools.
- HubSpot
- RD Station
- ActiveCampaign
- VWO
- SEO
- GEO
- Google Analytics
06
Leadership and process

Experience coordinating design and technology teams, organising projects and following deliveries through.
- Scrum
- Kanban
- Jira
- Trello

04AI

A lot of people ask me about AI. Here are the answers.

AI is already part of my work, and I see it as a natural evolution of the tools we use to build. It helps save time, explore possibilities and even think some solutions through better. It doesn't replace experience or people, but it can make the work a lot easier.

01
Do you use AI?

Yes, every day. I use Claude, Codex, Cursor, Lovable, Figma Make and other tools at different stages of the work. Sometimes to build, sometimes to research, test an idea or simply think down another path.
02
Does it change price and timeline?

It can. Some tasks that used to take a long time can now be solved faster, and that naturally helps the project's timeline and cost. It depends on what needs to be done and how much AI actually helps in that case.
03
What about quality?

The care is the same. What I do with the help of AI also goes through review, tests and the same criteria I use in the rest of the development. It can help reach a solution faster, but it still needs checking that it really works for the project.
04
Can you put AI in my project?

In some projects, yes. It can be smarter search, support, content generation, automations or integrations with tools you already use. First I understand what you need, then I see whether AI is really a good option.