Open to opportunities

Luiz Frederico Santos De Queiroz Junior

@luizfredericosantosd

Front-end Engineer at Listo Tecnologia building Angular micro frontends for payments, merchant onboarding, and banking products.

Brazil

Message

At Listo Tecnologia, I build modules for the Listo IP acquiring backoffice across Angular micro frontends, from development through initial rollout. My work includes terminal and depositary bank management, merchant screening, and improving onboarding flows.

I'm currently building partner Pix, payment links, and an embeddable smart checkout. I also upgraded Listo Fácil to Angular 19 and authored the Angular 22 upgrade plan for the backoffice.

Previously, at Guide Investimentos, I upgraded a micro frontend and its component library from Angular 6 to Angular 14, delivering to production in six weeks and bringing related support tickets down to virtually zero. I also developed the front end of a client and asset migration system for Guide's acquisition by Banco Safra.

Experience

Work history, roles, and key accomplishments

Current

Front-end Engineer

Current

Listo Tecnologia

Jan 2025 - Present (1 year 10 months)

Built new modules of the acquiring backoffice (Listo IP) on top of existing shell and onboarding micro frontends, working across roughly 10 Angular 19 micro frontends. Delivered modules including Connector Manager, terminal management, depositary bank management, API profile and credential management, and Mastercard MATCH merchant screening.

Angular 19 TypeScript RxJS Signals Angular Material Micro Frontends Jest Azure DevOps Azure AWS Git

Full Stack Engineer

Nexmuv

Jan 2023 - Dec 2024 (1 year 11 months)

Led the upgrade of a micro frontend of Guide Investimentos' internal platform, together with its internal component library, from Angular 6 to Angular 14, removing deprecated dependencies and refactoring the codebase. Delivered to production in six weeks, bringing related support tickets down to virtually zero.

Angular TypeScript Micro Frontends .NET Core Microservices Jasmine Karma SonarQube AWS Bitbucket Git

IT Analyst

F1RST Tecnologia

Jan 2021 - Dec 2023 (2 years 11 months)

Developed features in the accounts and investment funds micro frontends of Santander Brazil's Relationship Manager Portal, the platform used by all of the bank's relationship managers to service clients. Responsible for front-end sustainment of FVE (External Sales Force), Santander's field-sales platform, handling production incidents, bug fixes and feature delivery.

Angular Module Federation Java Spring Boot Microservices Jasmine Karma SonarQube Dynatrace Jenkins Git

Full Stack Engineer

Evo Systems

Jan 2020 - Dec 2021 (1 year 11 months)

Built and maintained four client systems, including TravelPay (travel), Ideológica (laundry services) and SeuVale (flexible employee benefits), working across AngularJS, multiple Angular versions, VB.NET, .NET Framework and .NET Core. Became the team's go-to developer for the Ideológica product, owning new features and the resolution of recurring technical issues.