Senior Software Engineer

Iury
Brasileiro

Full Stack & Mobile Engineer with 6+ years delivering products across web, mobile, and AI systems. Based in Brazil — working globally.

Career

Selected Experience

Mar 2025 - Present

São Paulo, BR

Senior Full-Stack Developer

BRQ Digital Solutions

Joined Weme as part-time Senior Full-Stack Developer, then transitioned to full-time after BRQ acquired Weme. Led migration of a SharePoint/React portal to Next.js, refactoring the codebase to align with modern best practices. Implemented security fixes on a NestJS backend based on pentest findings. Identified the root cause of a critical partial rendering bug and temporarily covered backend in C#/.NET when needed. Currently working on the OPEA project in Vue.js and previously delivered the CPFL internal portal (Next.js, C#) and Copa Energia portal (React, Node.js).

Next.jsVue.jsNestJSC#.NETPostgreSQLAzure DevOpsPlaywright

Nov 2025 - Feb 2026

London, UK

Senior Software Developer

Employers AI

Worked directly with AI-driven systems focused on reliability and maintainability. Identified and fixed bugs in AI features, refined prompts to improve model outputs, and ensured consistent behavior across use cases. Developed Slack bots and integrated Stripe and OpenAI APIs.

AI SystemsPrompt EngineeringNestJSNext.jsFirebaseGCPStripe

Jan 2022 - Oct 2025

New York, US

Senior Mobile Developer

Fluyo

Worked on Fluyo, a gamified language learning app combining interactive lessons, social features, and character customization. Built a CI/CD pipeline with GitHub Actions + EAS, implemented payments via RevenueCat, ambient music, push notifications, and rewards features. Wrote automated tests with Maestro and Detox.

React NativeExpoGitHub ActionsRevenueCatFirebaseThree.jsGCP

Jun 2023 - May 2024

Barueri, BR

Senior Full-Stack Developer

Aggera Tech

Co-owner and tech lead on two products: CyberAngels (cyberangels.io), an Italian cybersecurity platform where I built the admin dashboard and led a team of two backend developers; and Na Real, a mobile app that helps small businesses organize operations, track activities, and manage their growth. Maintained code quality through reviews and debugging sessions across the full stack.

LeadershipNext.jsReact NativeC#.NETAzure DevOps

Mar 2021 - Oct 2023

Rio de Janeiro, BR

Full Stack Developer

DoctorWeb

Delivered multiple React Native applications across two verticals. In the delivery space: Farmazon and Farmazon Lojas (medication delivery ecosystem) and Bassi Marfrig and Bassi Lojas (delivery platform for Marfrig Global Foods), plus Ceará App (government services). In the publishing space: built a React Native white-label engine powering three monthly-subscription reading apps — Dum Dum Livros (illustrated books for children up to 10, focused on inclusion, empathy and literacy), Conta Outra Vez! (curated digital books connecting young readers with Brazilian authors), and Máquina de Contos (contemporary Brazilian short stories curated monthly, operated by Graviola Digital). Also migrated the entire backend from Python to NestJS and created a custom keyboard proof of concept built entirely with React Native components via a native bridge.

React NativeNext.jsNestJSNode.jsTypeScriptRedux

Dec 2019 - Mar 2021

Barueri, BR

Mobile Developer

TradeUp Group

Developed features and resolved bugs in React Native apps. Worked on TIM B2B & B2C, an internal app for TIM used to manage visit schedules and complete client questionnaires. Introduced automated tests and adopted TypeScript to improve code quality across the team.

React NativeTypeScriptRedux

Stack

Tools & Technologies

ReactNext.jsReact NativeTypeScriptNestJS.NET / C#Node.jsVue 3ViteAI SystemsPrompt EngineeringCI/CDKeycloakPostgreSQLDocker

Contact

Let's build something worth remembering.