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projects
commercial work, studies and experiments: the highlights first, then the whole archive.
featured
TaskForge
Orchestrator that turns a request into a task graph, isolates each task in its own Git worktree and runs them in parallel waves, with human review and merge at the end. The planner is read-only, and no agent can publish on its own.
impact
The thesis stopped being "run agents" and became mapping how the team works, then attaching agents only where they fit.
StechClub
Education platform delivered end to end: public area, company SSO, learning tracks, video served through signed S3 links, an application quiz and an admin panel. Used today by 15+ mentees.
impact
No bucket credential ever reaches the client, and the model absorbed tracks, playlists and class material without a domain rewrite.
Illustration Conn-Pod
A library that splits AI work across different models: one executes, another verifies. Each role has declared read and write scope, bounded retries and an evidence receipt tied to the version. Every task runs in its own Git worktree, under a sandbox.
impact
Jarbas already consumes the library. The next step is routing each microtask to the smallest model that can handle it, with measured calibration.
Jarbas
Assistant over a Markdown vault whose core is an action gate: every agent write passes through a gate that validates the plan before touching a file. Fail-closed by default, with an append-only journal and a regression certificate per run.
impact
The engine serves any vault that declares the schema, and the interface talks to it over an authenticated contract.
professional
14PortalAZ
Portal to run AI-assisted WhatsApp support: file upload, catalog, conversations, a test sandbox, prompt versioning with rollback and n8n automation running on EC2.
Illustration MITRA CRM
White-label desktop CRM for small and medium businesses, in Python with tkinter, SQLite and MVC separation: customer management, configurable sales funnels, marketing automation, reports and a metrics dashboard.
2022
Bubble Box Laundry
Landing page for a self-service laundry franchise focused on lead generation: store models, unit finder and campaign context, delivered in the 2024 agency cycle.
2024
Apollo Digital
Lead-generation landing page for a B2B and B2C digital positioning agency: methodology, cases with results and contact calls to action. A 2024 agency-cycle delivery.
2024
Braseng Business Consulting
Lead capture page for an organizational-diagnosis consultancy, with the service explained in steps and the focus on capturing leads. A 2024 agency-cycle delivery.
2024
Bumbum de Anjo
Direct-sales landing page for a baby anti-rash spray: product benefits, parent testimonials and the path to purchase. A 2024 agency-cycle delivery.
2024
Viotto Clinic
WordPress lead capture page for a dental veneer clinic: case portfolio, certifications and testimonials leading to appointment booking. A 2024 agency-cycle delivery.
2024
FEHE Chocolate
Shopify landing page for a sugar-free chocolate brand: ingredients, process and a sales funnel. A 2024 agency-cycle delivery.
2024
Souza Lima - Music Courses
WordPress landing page for non-degree music courses, in person and online, leading to a trial-class booking. A 2024 agency-cycle delivery.
2024
Souza Lima Music College
WordPress capture page for the music college entrance exam: courses, dates, selection process and registration. A 2024 agency-cycle delivery.
2024
Optec Integrated IT Solutions
WordPress institutional site for an IT company focused on cybersecurity, cloud and corporate infrastructure: services, differentiators and B2B lead capture. A 2024 agency-cycle delivery.
2024
AsuraPadel
Padel management system where I was the primary Angular web developer. The authenticated area contains 8 screens: home, dashboard, ranking, points marketplace, products, seasons, members and plans. The frontend uses standalone components, typed HTTP services and centralized interceptors for API integration.
Professor Jarbas Financial Assessment
Financial quiz with an open result, national comparison and a profile-based educational plan. The PDF is available to download and emailed to the participant, with a separate message for the advisor.
Mapping a collateral data pipeline
Light maintenance and cataloguing of a collateral data pipeline I did not build: an inventory and diagrams of its PySpark, Kafka and Django code, so the projects I was building for the same client could connect to it. Client anonymised.
Illustration
personal
19Portfolio v2
This site. A redesign in a monorepo with its own identity, a Go content api, internationalization and verifiable quality gates — including a black-and-white composition test that failed the first version of the interface.
2026
Portfolio API
This site's public api: a Go binary with SQLite on a free VPS, behind Caddy with automatic TLS. Content lives in git and is re-imported on every start; a release tests the bundle on a scratch database and rolls back on its own if the new version does not come up. It replaced a Next.js api on Postgres without changing any of the 51 compared responses, and used 14 MB of memory on its first release.
Illustration Portfolio v1
First version in Angular, audited and frozen in production in August 2026 with the hero closed around three counted indicators. Still serving the domain until v2 ships.
2025
Runner
Desktop tool to start and watch the local environment of several projects at once, with declarative configuration, credentials in the Keychain and a supervised process tree.
Illustration Zoologic
Zoo management across two repositories: a PHP 8 API with SOLID and real PHPUnit coverage, and a Next.js frontend. Written as an architecture exercise and revived in 2026 to become a published piece.
2024
Pronto
Urgent-services marketplace in two phases: an MVP with NestJS, Next.js and Expo over PostGIS and queues, then an architectural evolution in Go with Kafka, an offline-first technician app and distributed observability.
Illustration OmegaHub
Gaming platform in a TypeScript monorepo: Next.js on the frontend, NestJS over Fastify on the API, tRPC between them, BullMQ queues, two payment providers and persistence split across PostgreSQL, MongoDB and Redis.
2025
Illustration Brechoapp
Second-hand P2P mobile marketplace with data-protection rules from day zero: PII masking, PIX and card payments, queues to keep stock in sync and a Go backend.
Illustration Barbershop App
Discovery and booking PWA for barbershops, with a map, geolocation, a real-time schedule, three user roles and a database constraint preventing concurrent bookings in the same slot.
Jornada 5D
React Native template with multi-environment Firebase: local emulators, product flavors separating development from production and Clean Architecture as the starting point.
Illustration YoutCatcher
Desktop YouTube downloader with strict MVC, persistent history, structured logging, test coverage above 80% and packaging for more than one operating system.
2025
Instagram Analyzer
Desktop application that processes Instagram's JSON export and shows who does not follow back, with indicators and real-time search. Runs offline, touching none of the platform's APIs.
Financial Calculator
Desktop income-splitting tool with a dashboard, scenario comparison and history, written in CustomTkinter over NumPy and Matplotlib with MVC separation.
FinanceOS
Personal finance monorepo in Turborepo, with Prisma, Redis and per-workspace stores. An architecture study, broader in code than in delivered scope.
Aquila & Evelyn
Digital wedding invitation as a responsive static site with no build step, published on GitHub Pages as a sanitized version — the original, carrying the couple's data, stayed in an archive branch.
2026
A Letter for Daniela
Narrative experience in Next.js with GSAP animation and accessibility taken seriously — visible focus, reduced motion respected. The public edition is sanitized; the original stayed in a historical branch.
2026
Vault Telegram Bot
Chat interface for a Markdown vault: free-form queries, agenda and open items resolved against an authenticated pod, with no local vector index. Paused.
Illustration Atalaia
A 2D creature-collecting RPG in Godot for Windows and Linux, with LAN multiplayer for up to 16 players. Atalaia is the codename of a personal project in closed alpha.
2026
Illustration Sekiro visual system
The design system behind this site: layered tokens for the Sumi and Washi themes, shared components, microcopy kept out of components, and ten rules written to be measured, with an accessibility gate in CI.
study
8Pasta la Vista
Delivery app with Clean Architecture and polyglot persistence — PostgreSQL, MongoDB and Redis — an Expo mobile client, an Express API and Stripe payments.
2026
Pokédex
Mobile PokéAPI browser in Expo, with local SQLite persistence and Reanimated animations. Academic delivery for the multiplatform development course.
2026
Repository Explorer
Senior Angular practical test delivered in July 2026: GitHub API search with signals, loading and error states handled and continuous integration green in the repository.
2026
BuscaJogos+
Team capstone project: a digital-game price comparator with wishlist and sale alerts, split into database, a Go API and a responsive frontend. Graded 9.0 in the second half of 2022.
2022
Illustration KitBuilder / S.A.G.A.
Electronic-parts inventory control in Python with a layered architecture, repositories, Alembic migrations, spreadsheet import and a test suite. Graduation delivery at FATEC Mauá.
2025
Sudoku Solver
Computer-vision pipeline that solves a Sudoku from a photo: preprocessing and grid detection in C++ with OpenCV, digit recognition, a solver in plain C and the answer overlaid on the image.
Illustration Pokémon in JavaFX
JavaFX desktop application with Maven and MVC separation — an architecture exercise in Java, written when the language was still new ground.
2023
Augury Guide for D&D 5e
Interactive guide to the Augury spell in D&D 5th edition: how to read each of the spell's answers, strategies per game scenario and tips for game masters and players, as a static site published on GitHub Pages.
2022
open source
1Schedule I — LocalMultiplayer
Maintenance fork of a local multiplayer mod: compatibility fix for the game's 0.4.6f13 build and per-instance input isolation, so keyboard and gamepad stop fighting over the same input.
2026
Illustration
