HELLO

welcome to

CollectionofmyRecentProjectsaka portfolio

I'm Arthur. On my own, I built a CRM that finds, qualifies and reaches out to leads without anyone touching it, a tracking system that steers Meta's ad algorithm toward real buyers, and a space research platform in partnership with the University of Florida. All of them are live, from the database to the screen.

selected projects · 2023 - 2026

ARTHUR VIEIRA

selected projects · 2023 - 2026

MY FOCUS

Code & automation built for products that work

Database, back end, front end and deployment. If a task can be automated, I automate it instead of doing it by hand again.

• About me

WHAT I DO

  • Full-stack development
  • AI agents & automation
  • Web apps
  • Integrations & APIs
  • n8n automation
  • + Custom-built tools

WORK

01
/05
UtmZap landing page: sales tracking for businesses that sell on WhatsApp
UtmZap dashboard overview
UtmZap dashboard with revenue, sales funnel and sales per ad
Meta campaigns inside UtmZap

ADVANCED TRACKING FOR META ADS CAMPAIGNS

UTMZAP

Next.js · Supabase · Meta CAPI

Next.jsPostgreSQLMeta CAPI
Memberss admin panel
Deliverables and materials of a members area
Members area home screen with the unlocked materialsSeveral products under a single account in Memberss

MEMBERS AREA FOR DIGITAL PRODUCTS

MEMBERSS

Next.js · PostgreSQL · Tailwind CSS

Next.jsPostgreSQLTailwind CSS
The WhatsApp agent workflow in n8nThe WhatsApp agent workflow in n8n
A real conversation of the WhatsApp agent assisting a lead
Dashboard of sales made by the WhatsApp agentRecurring payments generated by the WhatsApp agent, personal data blurred

AI AGENT FOR WHATSAPP

WHATSAPPAGENT

n8n · Evolution API · OpenAI

n8nOpenAI
SpaceBio upcoming launches panelSpaceBio TV, live launch coverageLaunch details with a map of the launch siteSpaceBio panel of indexed files

SPACE RESEARCH · NASA GeneLab

SPACEBIO

Django · Tailwind · Postgres · NASA GeneLab

DjangoTailwind CSSPostgreSQL
Lead list in the prospecting CRMA lead in detail inside the CRM
n8n workflow that analyzes each lead and finds its weak points and pain points
Pain points found automatically by AI for a lead
Prospecting CRM overview

AI-POWERED LEAD PROSPECTING

LEADCRM

Next.js · Supabase · n8n · Apify

Next.jsSupabasen8nApify

EXTRAS

Smaller, simpler projects, built quickly, outside my main focus.

• More projects