Aracaju / SE“For systems that have to stay up…”SE/BR 2026

Software Engineer

Pragmatic backend, microservices and distributed systems.

I build and maintain software in domains where reliability, architecture clarity and response time matter: core banking, antifraud, KYC, integrations and applied AI.

  • Aracaju, SE
  • 3+ years in IT
  • Computer Science - UFS
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Critical product
Core banking, KYC and antifraud
Technical base
.NET, NestJS, RabbitMQ, Redis and React
Education
Computer Science at UFS
.NET · NestJS RabbitMQ · Redis“Architecture for the problem, not for show”Open to conversations
  1. 3+years of IT experience
  2. 200k+fraudulent transactions identified
  3. from 2 days to 4 hoursKYC onboarding reduction
  4. 90%fewer usability tickets after the RAG chatbot

Three years across core banking, antifraud and municipal systems.

I am a Software Developer and Computer Science undergraduate at the Federal University of Sergipe. My work combines backend, full-stack, architecture and systems integration, with a special focus on critical products and distributed systems.

I like building software that stands up in the real world: systems shaped by solid architecture decisions, clear code, tests, observability, maintainability and measurable impact.

  1. Architecture sized to the problem: volume, deadline and who maintains it.

  2. Messaging, caching and data storage treated as product decisions.

  3. Interfaces and APIs designed for maintenance after deployment.

Four systems, each with the result it delivered.

Antifraud in a banking environment

A .NET and RabbitMQ module that analyzes transactions in the core banking critical flow.

Helped identify more than 200,000 fraudulent transactions.
  • .NET
  • C#
  • RabbitMQ
  • Core banking
  • Antifraud

KYC with asynchronous processing

A KYC analysis flow with NestJS, MongoDB, RabbitMQ and Redis, automating customer onboarding from 2 days to up to 4 hours.

Critical endpoints using cache-aside with response times capped at 280ms.
  • NestJS
  • TypeScript
  • MongoDB
  • RabbitMQ
  • Redis

Receivables anticipation system

Participation in architecture definition and full-stack development of a system using NestJS and Vue.js, applying DDD and TDD in automatic debit and payment processing flows.

Automatic debit and payments modeled with DDD and built with TDD.
  • NestJS
  • Vue.js
  • TypeScript
  • DDD
  • TDD

RAG chatbot for internal support

A RAG pipeline with VitePress, chunking, PGVector, embeddings and Llama 3.2 to answer user questions.

90% reduction in usability support tickets.
  • RAG
  • PGVector
  • VitePress
  • Embeddings
  • Llama 3.2

From an internship at PGM to core banking.

  1. July/2025 - Present

    Full Stack Engineer

    Delfinance

    Core banking with .NET, internet banking with React, antifraud, KYC, receivables anticipation, RabbitMQ, Redis and maintenance of critical transactional flows.

  2. March/2025 - July/2025

    Full Stack Developer

    Inovatec-jp

    On-site at PGM: applied AI, RAG pipeline, PGVector, embeddings and an internal chatbot with 90% reduction in usability tickets.

  3. June/2024 - March/2025

    Full Stack Developer

    SergipeTec

    On-site at PGM: Java/Spring backend, municipal systems integration via REST APIs, automatic task distribution and REST-to-GraphQL refactoring.

  4. September/2023 - June/2024

    Front-end Developer

    SergipeTec

    On-site at PGM: Vue.js frontend for municipal systems focused on usability, responsiveness and operational experience.

  5. July/2023 - September/2023

    Intern

    PGM

    Participated in the migration of a critical system from legacy Angular to Vue 3.

Messaging · Cache · Critical flow

Stack by area, from backend to applied AI.

24/7
Backend
  • Java
  • Spring
  • .NET Core
  • C#
  • ASP.NET Core
  • NestJS
  • TypeScript
  • REST APIs
Distributed systems
  • Microservices
  • RabbitMQ
  • Redis
  • CQRS
  • DDD
  • Clean Architecture
  • TDD
Frontend
  • React
  • Vue.js
  • GraphQL
  • Apollo Client
  • Responsive UI
  • UX
Data, DevOps and AI
  • SQL Server
  • PostgreSQL
  • MySQL
  • MongoDB
  • Docker
  • CI/CD
  • ELK
  • RAG
  • PGVector

Let's talk about software that has to keep working.

I am open to talking about roles and projects in backend and full-stack development, especially financial flows, messaging and distributed systems.

Remote or hybrid · Brasília time (UTC-3)

[email protected]

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