Projects

Things I've built on my own and projects I've worked on with other teams.

Foco

Period: 2026 - In development

Role: Creator and developer

A native macOS app that keeps the current task in a small floating panel above other windows.

Results

  • The task stays in view during a work session.
  • Session data stays on the Mac.
Swift SwiftUI AppKit macOS

Russio's Blog

Period: 2026 - Present

Role: Writer and developer

My place to write about software, business, and life outside work.

Results

  • Content in Portuguese and English, with custom Hugo layouts.
  • Markdown files on GitHub, with an automated publishing workflow.
Hugo CSS Markdown Docker

CSN Portal NGT

Period: 2021 - 2024

Role: Tech Lead

Modernization of an enterprise portal and migration from a monolith to microservices.

Results

  • Deployment time reduced from 3 hours to 12 minutes.
  • Simplified release coordination between teams.
  • Reduced incident recovery time.
Node.js Go Microservices CI/CD

Agrogalaxy B2B E-commerce

Period: 2021 - 2024

Role: Tech Lead

B2B commerce platform with mobile and internal system integrations.

Results

  • More than $500k in GMV during the first 6 months.
  • Annualized impact above $2 million.
  • Delivered from concept to production in 6 months.
Python Node.js React APIs

MegaImagem Scheduling Portal

Period: 2020 - 2021

Role: Full Stack Developer

Portal for appointment scheduling and service management.

Results

  • More than 10k daily users.
  • 35% increase in scheduling efficiency.
  • Delivered within the contracted deadline.
.NET React SQL Server

Bandeirantes AP Automation

Period: 2020 - 2021

Role: Full Stack Developer

Automation system for accounts payable reconciliation.

Results

  • Automated 80% of manual reconciliation.
  • Saved approximately 15 hours per week for each user.
  • Integrated with existing financial workflows.
ASP.NET Angular APIs

iZiMarketplace

Period: 2019 - 2020

Role: Full Stack Developer (Mid-level)

Financial services and e-commerce platform.

Results

  • Test coverage increased from 20% to 68% with TDD.
  • More than 500k daily transactions processed with MongoDB.
  • Products launched in Brazil, Portugal, and Germany.
Node.js Go Laravel MongoDB TDD

DestinoPortugal Platform Rebuild

Period: 2016 - 2017

Role: Full Stack Developer

Rewrite of a tourism portal in Laravel, including booking and e-commerce.

Results

  • Mobile Lighthouse score increased from 45 to 88.
  • Desktop score increased from 85 to 92.
  • Organic traffic increased by 150% after the SEO work.
Laravel PHP WordPress Stripe SEO

DeezTech

Period: 2020 - 2023

Role: Co-founder & Developer

Agency that developed websites and online stores for small and midsize businesses.

Results

  • More than 15 projects delivered.
  • 90% client retention.
  • Average Core Web Vitals improvement of 48%.
WordPress PHP WooCommerce SEO