Carlos Arthur

Product Designer & Developer

startup

CorporateWork

TheBlackBird

My marketing agency. We served primarily e-learning platforms for the gaming and art industry.

RebusFarm | TTTC.CA | LearnedSquared | RebelWay | CGSpectrum | and others

Awwwards

awwwards.com

I worked with Awwwards on two things: new product and growth leverage, helping them monetize their community in a meaningful way that felt organic for them.

Step one was helping them become profitable after Covid by filling out their Awwwards events using Google and Facebook ads.

Awwwards work

Step two was focusing on a high-leverage launch of Awwwards Masterclasses, which added €387,271 to their bottom line in the first run. Each class ran at $1,500 for 8 weeks. There's data from the dashboard I can share, but with what we have here it's not hard to calculate.

Domestika

domestika.org

At Domestika my main role was Product and Marketing. I launched Domestika Certificates, as well as other initiatives for cohort-based classes and subscription models.

Domestika

CG Master Academy

cgmasteracademy.com

Probably the company I worked with the most. I was their Marketing Director focused on product-led marketing. Helped grow from their first million up to $4M+ to acquisition by Domestika.

A few mentions from the hundreds of experiments: built core features of Unity, their LMS, with the team at Shakuro.

CGMA work 1
CGMA work 3
CGMA work 4

Built a full mini-course funnel that is probably still one of the best in the industry.

Prime Performance Labs

Prime Performance Labs is a project from ex-execs at Google, Apple, Asics, Nike, and WHO. They focus on performance and neuroscience for leaders in high-stress environments.

I helped them shape the product from the ground up and built their health dashboard.

Prime Performance Labs

I think this gives a brief intro about my journey in corporate. I could share more but don't want to make this super long.

Indie Projects

Twtfast was the first indie project I built. Used it to learn a lot about AI and vector databases. I built basically an engine for creating "viral tweets."

Probably my favorite project to this day. Started as an MVP using Obsidian and the ChatGPT API.

Started as an MVP

This product was very interesting because it got the attention of Shaan Puri

Image 1
Image 2
Image 3

Turned into a product. I believe it's still the only product that can process 1M+ tokens and handle it like nothing. Cerebro is basically Notion + a second brain. It also literally means "brain" in Portuguese.

Showroom Design

showroomdesign.co

This is a partnership with friends. I handled MVP, design, and code.

Image 1
Image 2
Image 3

We built our own internal tools, using YOLO and SAM for detecting furniture and Stable Diffusion to remove and clean up the space. And it's able to add actual furniture store furniture in the customer's room, instead of AI hallucinations.

Example tenant: lv2furniture.showroomdesign.co

Still under development.

Not Shipped to the Public

(Experiments)

Indie Clubhouse

The idea was to build a community + Product Hunt for indie hackers.

Nivens

An Ahrefs alternative, fully functional, with some cool AI features for finding business opportunities based on SEO and potential keyword ranking.

Vibe Editor

TikTok shorts editor.

Pinnook (Pin Nook — Pinocchio)

This was a utility tool I built for myself. Just a Chrome extension + a simple webpage that would save and automatically organize bookmarks in a more visual way. It also had a discovery feed for anyone who wanted to make their bookmarks public.

CLIMax

A CLI tool I actively use daily. Built for speed and management — brain dump notes, kanban boards, view and edit .md files, all from the terminal. I run it alongside Claude Code on Ghostty, and take it on the go via mobile through a tmux attachment. Planning to open source it.

CLIMax

I've played around with other 66+ ideas in the past year alone that are not listed here. One of these for example is Supernova, a full AI agentic team to manage your life.

GitHub contributions — 1,456 in 2025 across 66+ repositories

Started building iOS apps a few months ago, more with the intent of learning Swift and the core ecosystem.

Verso

Verso

Christian daily devotional app.

Bonsai Buddy

Bonsai Buddy

Gamified bonsai care app.

Glowtap

Glowtap

Google Nano Banana wrapper. There's not much to it.

Funny enough, I tested a few TikTok organic for Glowtap and the video did better on xiaohongshu.com than IG. Go figure.

Xiaohongshu screenshot

My goal behind these was to get familiar with Swift because I want to build a B2B2C product that I believe can do pretty well, based on all the data.

If you're curious: I used to own a studio called Metastudio that owned smaller game studios like Orbit Games. We did our own indie games as well as some games for Atari.

I completely failed this business.