02 / DevRemote

Systems Developer

I build the back-end the money flows through

Full stack with a back-end focus: 4+ years on APIs and financial systems in production, covering billing, cost allocation, and card, boleto, and Pix payments.

See projectsCV (PT)
01 / About

The back-end the money flows through, and the front-end people use to keep track of it.

I'm a full stack developer with 4+ years building APIs and financial systems in production: billing, cost allocation and payments. My strength is the back-end, in Node.js, TypeScript, PHP/Laravel and PostgreSQL, with React and Next.js on the front-end.

I started in IT support at UNASP-HT, looking after 6 computer labs. I joined IATec as an intern and was hired as a trainee within 8 months; then I built the billing core of an education fintech and went back to IATec as a mid-level developer on its billing systems. Today, as a freelancer, I build and run my own event website platform.

I use AI with a method: a PRD, a glossary and ADRs before any code, and a Claude Code skill of my own in events-api. I like architecture you can verify, with Clean Architecture and DDD and the dependency rule enforced by ESLint and covered by tests. And quality in delivery: CI against a real Postgres, migration drift checks, gitleaks, and a build that fails without the OpenAPI docs. The right tool for the scale.

The right tool for the scale.

02 / Journey

Financial systems in production

  1. Dec 2025 – presentFreelancer

    Full Stack Developer

    Multi-client event website platform, for weddings and birthdays.

    • 3 clients in production and ~200 RSVPs processed.
    • End to end: a React invitation with RSVP, a Hono API with Prisma, PostgreSQL and JWT, and a dashboard for clients to manage their guests.
    • Moved email from SQS → Lambda → SES (AWS CDK) to Resend, cutting cost and infrastructure.
    • Node.js
    • TypeScript
    • Hono
    • Prisma
    • PostgreSQL
    • React
    • Resend
  2. Apr 2023 – Nov 2025IATec

    Software Engineer (mid-level)

    Rehired to work on the organization's billing and cost allocation systems.

    • Cut the main billing queries by 67% (90s → 30s) by rewriting SQL and adding indexes.
    • Restructured billing and PDF generation, from 5+ min to about 2 min.
    • Automated the export to the accounting system, with documents stored on AWS S3.
    • Co-built two corporate systems from conception: contract management and license distribution.
    • PHP 8
    • Laravel
    • SQL
    • AWS S3
  3. Sep 2022 – Mar 2023YouPay

    Software Engineer (mid-level)

    Payments startup for education.

    • Critical APIs for the billing core of a platform used by ~15 schools (card, boleto and Pix).
    • Integrated 3 gateways (ASAAS, Getnet and Stone) in a microservices architecture and built the delinquency control.
    • PHP
    • REST
    • Pix
    • ASAAS
    • Getnet
    • Stone
  4. Feb 2021 – Aug 2022IATec

    Development Intern → Trainee

    Maintaining legacy PHP systems.

    • Hired as a trainee within 8 months, moving on to new features in financial systems.
    • PHP
    • Laravel
  5. Feb 2019 – Nov 2019UNASP-HT

    IT Support Intern

    Support for the university's computer labs, on a team of three interns.

    • 6 labs and 300 workstations, serving ~200 students and faculty per semester.
    • Led lab preparation for exam periods with zero downtime.
    • Windows Server
    • Active Directory
    • LanSchool

Education

  • Bachelor's · onlineInformation SystemsCruzeiro do Sul · expected Dec 2026
  • Technical schoolIT TechnicianUNASP-HT · 2019
03 / Projects

Products

Projects with real users, live or being built.

Product · livefawedding.com.br

FAWedding

Wedding websites with RSVP, a gift registry and a confirmation email for every guest. It started as my own wedding's site and now serves other couples.

  • Multi-tenant API: each wedding has its own front-end, domain and email template.
  • Email confirmation with Resend and React Email, with the delivery status on the RSVP and a manual resend.
  • 3 clients in production and about 200 RSVPs processed.
  • React
  • TypeScript
  • Hono
  • Prisma
  • PostgreSQL
  • Resend
  • Product · in progress

    Events

    The successor to fawedding-api, for any kind of event: RSVP, a gift registry paid with Pix and guest emails, with an Expo app for the organizers.

    • Clean Architecture with pragmatic DDD on NestJS, the dependency rule enforced by ESLint.
    • PRD, glossary and ADRs before the code.
    • CI with integration tests on Postgres, a migration drift check and secret scanning.
    • NestJS
    • Prisma
    • PostgreSQL
    • Redis
    • Expo
  • Product · live

    Portfolio

    This site: a Hub leading to my two personas, audio and development, in English and Portuguese.

    • Per-persona colors as tokens, with glass cards over each.
    • Its own contact and testimonials API, with JWT login and API keys.
    • Next.js
    • Tailwind v4
    • Motion
    • Express
    • Prisma

Studies

Built to learn and practice, with no users.

04 / Stack

What I build with

  • Back-end

    • Node.js
    • TypeScript
    • NestJS
    • Hono
    • PHP 8/Laravel
    • Java/Spring Boot
    • Prisma
    • Zod
    • REST
    • JWT

  • Front-end & Mobile

    • React
    • Next.js
    • Expo/React Native
    • TanStack Query

  • Databases

    Data modeling, indexes and query tuning.

    • PostgreSQL
    • SQL Server
    • MySQL
    • Redis

  • Cloud & DevOps

    • AWS (S3, SQS, Lambda, SES, CDK)
    • Vercel
    • Terraform
    • Docker
    • GitHub Actions
    • Datadog

  • Integrations

    Payment gateways, Pix, email and media.

    • ASAAS
    • Getnet
    • Stone
    • Pix
    • Resend
    • Cloudinary

  • Practices

    Unit and integration tests, AI-assisted development.

    • Clean Architecture/DDD
    • ADRs
    • Vitest
    • Claude Code
    • MCP
    • Scrum/Kanban
05 / Contact

Need an API that holds up with money flowing through it?

Open to remote full-time or contract roles, in Brazil or abroad, and to freelance projects: APIs, integrations, and web applications.