Sidney LimaSidney Lima

Resume

I am Sidney Lima, a software engineer. Since 2021 I have been building web, mobile and back-end products, from requirements to deployment and monitoring. I work with TypeScript, JavaScript, Java, Kotlin, Swift and Dart, using React, React Native, Next.js, Flutter, Node.js and Spring, on top of databases such as PostgreSQL, MongoDB and Redis and infrastructure with Docker, CI/CD, Azure and Google Cloud.

I have worked on large-scale products such as the Rock Encantech SuperApp, on healthcare solutions like the MED24 app, on an ERP platform and AI-powered internal tools at DGAZ, and on systems and APIs built at Porto Digital. I have experience with Android and iOS store releases, web deployments, performance monitoring, accessibility (WCAG), SEO, Google Analytics and Google Tag Manager, always guided by Design Patterns, SOLID and Clean Code.

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Experience

  1. Rock Encantech

    Mid-Level Full Stack Developer

    São Paulo - SP, Brazil
    Home Office

    Retail SuperApp Mobile

    • Development and evolution of a white-label retail SuperApp Mobile using React Native in a large-scale product serving over 150 clients and 3.5 million active users.
    • Contributed to implementation decisions, feature refactoring, new miniapp integrations, platform support, and continuous production stability improvements.
    • Participated in building the app backoffice for application management and configuration in a white-label environment.
    React Native
    TypeScript
    Miniapps
    White-label
    Performance
    Backoffice

  2. MED24

    Mobile Developer

    Bahia, Brazil
    Home Office

    MED24 mobile application

    • Development of the MED24 mobile app from a web platform, bringing scheduling features, connectivity with doctors and clinics, and quick access to the system into the mobile experience.
    • Structured the project with a focus on performance, reusable components, code organization, offline experience, and mobile usability.
    • Created custom animations with Reanimated, including a loading animation inspired by heartbeats.
    React Native
    Expo
    TypeScript
    TanStack Query
    React Hook Form
    Zod
    NativeWind
    Reanimated
    Async Storage

  3. ITCOM - IT Support and Consulting

    Front-End Developer

    Bahia, Brazil
    Home Office

    WhatsApp messaging application

    • Development of a messaging application integrated with the WhatsApp API, using Next.js, TypeScript, and TailwindCSS with a focus on scalability, performance, and user experience.
    • Implemented interactive interfaces, real-time chat features with WebSocket, HTTP service abstractions, and state management with React Context.
    • Organized the architecture by context/feature, making maintenance, evolution, and agile collaboration easier.
    Next.js
    TypeScript
    TailwindCSS
    WebSocket
    WhatsApp API
    React Context

  4. Software Engineering – Porto Digital

    Front-End Developer

    Recife - PE, Brazil
    Academic Residency

    RunCife

    • Ideation and prototyping of a technological solution proposed by Porto Digital.
    • A mobile app named RunCife was proposed, fully gamified, initially aimed at encouraging people to engage in physical exercise, with turn-based battles against opponents spread across the city.
    Design thinking
    Scrum
    Trello
    Figma

    Order Management System

    • Prototyping and development of a technological solution to enhance the Order Management System.
    React
    ChakraUI
    Node.JS
    Express
    Prisma
    Postgresql
    Git
    Scrum

    Finance System - API Backend - Mobile Application

    • Contributed to the development of an API for a mobile finance application for a company within the Porto Digital ecosystem.
    Node.js
    Express
    Git
    Scrum

  5. DGAZ Marketing

    Mid-Level Full Stack Developer

    São Paulo - SP, Brazil
    Home Office

    Development of an Application for Customer Communication and Support

    • Contributed to the development of an application for sending information such as reports, invoices, account management, communication dispatch, and support ticket creation.
    • This resulted in a 30% increase in communication efficiency with clients. The app is available for download in app stores.
    TypeScript
    React Native
    Expo
    Git
    Scrum
    RESTful APIs

    Development of Websites and Web Applications

    • Creation and maintenance of customized websites for clients, including WordPress development, implementation of e-commerce stores, landing pages, and interactive web systems with React and Next.js.
    • Contributed to an SEO project for website optimization, improving PageSpeed scores.
    JavaScript
    PHP
    WordPress
    ReactJS
    Next.js
    MySQL
    Git

    Development of an Internal Tool for Content Production

    • Created an internal tool to automate the generation of base texts for posts, content review, and on-page SEO optimization using Artificial Intelligence.
    • Focused on agility and efficiency in content management, saving 50% of time in projects.
    Next.js
    Node.js
    Postgresql
    ChatGPT API
    Gemini API
    Git
    Kanban

  6. Multi Theft Auto

    Full Stack Developer

    Recife - PE, Brazil
    Freelancer

    Scripts and Applications for Servers

    • Development and maintenance of custom scripts for Brazilian servers of the game Grand Theft Auto (MTA), focusing on gameplay features and system integration.
    • Worked on performance improvements, bug fixes, and creation of new game mechanics.
    Lua
    SQLite

Skills

Languages

JavaScript
TypeScript
Dart
Swift
Kotlin
Java

Frameworks

React
React Native
Flutter
Spring
NextJS
Node.js
Express

Platforms, Libraries and Other Tools

Azure
GCP
Android Studio
Redis
Jest
Cypress
TailwindCSS
Chakra
Git
GitHub Actions
Jenkins
Dynatrace
Docker
MongoDB
PostgreSQL