Santiago Fleitas

TOTVScurrent

Apr 2025 – present

Backend Engineer · Joinville, Brazil · remote

• Java 17+
• Spring Boot
• Maven
• RabbitMQ
• EDA
• CQRS
• Microservices

• I started on the Logistics Finance team and now work on Logistics Kanban, a strategic project for visual, intelligent management of logistics processes.
• In TMS Comercial, I optimised how combinations are added to the freight table using database hashing, a 77% performance gain.
• I build REST APIs and integrate microservices with Java 17+, Spring Boot and Maven.
• I work with RabbitMQ, event-driven architecture and CQRS in distributed systems.
• I take part in code reviews, technical discussions and architecture improvements with cross-functional squads.

Conta Azul

Dec 2023 – Apr 2025

Software Engineer · Joinville, Brazil · remote

• Java
• Spring Boot
• OpenAPI
• Swagger
• Vue.js
• AWS Cognito

• On the Public APIs team, I built and maintained APIs open to integrators, connected to the product's private APIs.
• I worked on the integrations with Mercado Livre, Shopify and Nuvemshop.
• I developed the back-end with Java and Spring Boot, documented with Swagger and OpenAPI, and interfaces in Vue.js.
• I handled identity and access with AWS Cognito, across microservices and the monolith.
• I also worked with Go on integrations between internal products, where the language's performance made a difference.

Gesplan

part of TOTVS since 2023

Apr 2023 – Dec 2023

Full Stack Engineer · Joinville, Brazil · hybrid

• Java 11
• Spring Boot
• Liquibase
• Wildfly
• React
• TypeScript

• I built new features for the product's Budget module.
• I created screens in React with TypeScript, SASS and Ant Design.
• I wrote the back-end with Java 11, Spring Boot, Liquibase, Wildfly and Maven.

Neomind

Mar 2022 – Mar 2023

Full-stack Developer · Joinville, Brazil

• Java EE
• JAX-RS
• JPA / Hibernate
• AngularJS
• SQL Server

• I customised and optimised Fusion, Neomind's own platform, for clients such as PGM-Rio, Portobello and Tuper.
• For PGM-Rio, I built dashboards and screens in AngularJS and the Java (JAX-RS) APIs that feed them.
• I fixed bugs and shipped features end to end, from front-end to back-end.

Sizebay

Aug 2021 – Mar 2022

Development intern

• Java
• React
• JavaScript
• CSS

• I deployed Sizebay's Virtual Fitting Room and order tracker on clients' servers.
• I adapted the base product's styling to each client when the integration called for it.
• I worked on a product built with Java and React: the augmented-reality fitting room and order tracking from purchase to delivery.

SZ Soluções

Oct 2020 – Aug 2021

Full-stack development intern

• Node.js
• React
• JavaScript

• I developed BeeStock, a WMS (warehouse management system) built with Node.js and React.
• I worked on stock control and on order, supplier and customer management, from goods in to goods out.