Localiza&Co

• Built from scratch a responsive mobile-first React.js UI for a vehicle rental checklist management platform. Also implemented many optimizations, such as memory and state management, image compression and content upload via ECM (Enterprise Content Management) into AWS S3 buckets. Additionally, I integrated event analytics tools, like Amplitude and Fullstory, to collect valuable user behavior data, driving strategic business insights.

• Led the development of a scalable enterprise design system using Figma and Storybook, utilized across 20+ products. Guided the creation of custom React.js and React Native hybrid styled components with TypeScript, adopting Design-Driven Development (DDD) to ensure consistency and enhance User Experience (UX). Applied snapshot and unit testing for seamless integration and reliability.

• Built from scratch a B2B dashboard, from its conception, folder structure, migrated the Create React App (CRA)'s webpack bundler to Vite, implemented several screens in Typescript and React, unit tests in Jest, consumption of RESTful APIs with Axios and custom hooks, also setting up Dockerfiles and pipelines for automated Continuous Integration (CI) and Continuous Delivery (CD) processes with Azure.

• Configuration and maintenance of monitoring and observability dashboards through Amplitude, Datadog, Firebase and FullStory. Great effort in identifying, helping and reducing request latency from RESTful API's with backend engineers, errors with unmapped responses and daily monitoring of Real User Monitoring (RUM) for both browser and mobile events, also building feature flags and managing controlled rollouts.

• Contributed to several B2C modules in a React Native mobile application with 30K+ downloads on both AppStore and PlayStore for car rental in a partnership with Uber. Development of responsive screens, lottie animations, unit tests and snapshots, use of internationalization frameworks (i18n) and management of metrics and observability tools.

Software Engineer

SimpleLab Tecnologia 

• Contributed to several B2B and B2C modules in a Progressive Web Application (PWA) built with JavaScript and React for construction management tech products. Global customization of styled components of UI frameworks like Bootstrap and Material to attend many unique microsservices in an enterprise monorepo.

• Planning and development of reusable, responsive and offline-first modules through React and Node.js for structure and support calculations - providing not only an intuitive user interface, but also resilient RESTful APIs and easy integration with MongoDB and its Typescript-based ORM Mongoose.

• Migration of several already built legacy React.js class components to functional components - maintaining the as-is behavior and user experience (UX) of existing flows and enabling further to-be improvements making usage of the latest trends and toolings of the JavaScript environment.

• Setup and usage of Docker images and containers for the development of new features and deployment automation scripts, in a secure non-productive environment free of sensitive user information.

Cartão Ótimo

• Development from scratch of a complete CRUD web application with JavaScript for a corporate dashboard daily used by hundreds of internal employees in the sale of urban public transport tickets, user registration and authorization.

• Proposal of a clean git flow that was later adopted by the entire development team, establishing a unique and highly scalable quality standard with conventional commits and good development practices for tech products with 10+ years of existence.

Pro Haus Performance

Digital Marketing

Maxcast

Technical Support

I’m a Frontend Engineer with strong understanding of Responsive Web Design and have demonstrated 5+ years of experience working in an agile environment with solid foundations in JavaScript, TypeScript, React and its latest trends and tools (state management, module bundles, components libraries, etc).

I also feel very comfortable planning, executing and managing tech products, building and consuming automated pipelines for CI/CD purposes, writing clean, reusable and high coverage code, and also masterfully architecting and consuming RESTful APIs alongside backend engineers.

Taplio

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Samuel Pietra

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