Dean Vinícius

Backend, microservices and distributed systems with practical depth.

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

Aracaju, SE3+ years in ITComputer Science - UFS
+3years of IT experience
200k+fraudulent transactions identified
2d -> 4hKYC onboarding reduction
90%fewer chatbot/RAG usability tickets

Engineering with business context, without technical theatre.

I am a Software Developer and Computer Science undergraduate at the Federal University of Sergipe. My work combines backend, fullstack, 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. 01

    Enough architecture for the problem, not for display.

  2. 02

    Messaging, caching and data storage treated as product decisions.

  3. 03

    Interfaces and APIs designed for maintenance after deployment.

Real work, described at the right level of detail.

01

Antifraud in a banking environment

A .NET and RabbitMQ module to analyze transactions in a critical flow and contribute to the identification of more than 200,000 fraudulent transactions.

Transactional security and risk mitigation in a financial domain.
.NETC#RabbitMQCore bankingAntifraud
02

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.
NestJSTypeScriptMongoDBRabbitMQRedis
03

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.
RAGPGVectorVitePressEmbeddingsLlama 3.2

A timeline shaped by real products.

July/2025 - Present

Software Engineer

DelTech

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

March/2025 - July/2025

Fullstack Developer

Inovatec-jp

Applied AI, technical documentation, RAG pipeline, PGVector and a chatbot integrated into an internal system.

June/2024 - March/2025

Fullstack Developer

SergipeTec

Municipal systems integration, REST APIs, automatic task distribution and REST-to-GraphQL refactoring.

September/2023 - June/2024

Front End Developer

SergipeTec

Frontend development for municipal systems focused on usability, responsiveness and operational experience.

July/2023 - September/2023

Intern

PGM

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

Tools chosen by context.

Backend

JavaSpring.NET CoreC#ASP.NET CoreNestJSTypeScriptREST APIs

Distributed systems

MicroservicesRabbitMQRedisCQRSDDDClean ArchitectureTDD

Frontend

ReactVue.jsGraphQLApollo ClientResponsive UIUX

Data, DevOps and AI

SQL ServerPostgreSQLMySQLMongoDBDockerCI/CDELKRAGPGVector

Let us talk about software that has to keep working.

If you are looking for someone to build, evolve or sustain backend and fullstack systems with technical quality, business understanding and delivery focus, I am open to conversations.

Dean Vinícius Palmeira de Meneses

Software Engineer · Aracaju, Sergipe - Brazil