Leandro S.
Full-stack Product Engineer

Skills

Node.js

React Native

Typescript

Github

Firebase Realtime Database

Javascript

React

Leandro is available for hire

Meet Leandro S.

All Howdy Candidates are vetted for skills and english proficiency.

Bio

A graduate in Systems Development Technology, commenced a professional career in 2018 specializing in Full-Stack and Mobile Development. This journey has been marked by substantial experience in various technologies such as React, React Native, TypeScript, Context API, MobX, Node Express, Docker, MongoDB, Firebase, and Git. Renowned for a persistent passion for skill enhancement and problem-solving, with a focus on generating positive impacts. Distinguishes oneself through dedication to excellence in both deliverables and code quality, consistently employing best practices in clean coding and efficient architectural design.

Frontend Developer Freelance
5/1/2022 - 7/1/2022

Developed expertise in creating dynamic dashboards and contributing to the development of an e-commerce system for selling medicines using React. Gained proficiency in JavaScript and its ecosystem, specifically focusing on state management with Redux, data visualization with Chart.js, and component-based architecture in React. Enhanced skills in RESTful API integration, ensuring seamless interaction between the frontend and backend systems. Demonstrated abilities in crafting responsive and user-friendly UI/UX designs and utilized tools like Webpack and Babel for module bundling and code optimization. Debugged and refactored code using tools such as ESLint and Prettier to ensure code quality and consistency.
React Native Developer
11/1/2021 - Present

Led the development and maintenance of an outsourcing application centered on cooperatives, cooperants, and collaborators, contributing to a range of functionalities from simple listings to complex commodities fixing systems. Updated the application to meet current standards by adopting best practices for clean code and solid architecture. Utilized technologies including Redux, MobX, ContextAPI, Firebase, and App Center for continuous integration and continuous deployment. Integrated with native modules for Android and iOS to accommodate the project's legacy components.
Fullstack Developer
5/1/2021 - 5/1/2022

Responsible for the development, maintenance, and optimization of an extensive web system, with a focus on recreating an experience similar to WhatsApp for HubSpot CRM. Implemented a pubsub messaging system to enable operators to serve multiple clients through a single number. Developed backoffices for both client and internal use, utilizing technologies such as React, Node Express, and MongoDB. Demonstrated expertise in the Context API and leveraged various libraries for web scraping and Chrome extensions.
Fullstack Developer Freelance
5/1/2021 - 9/1/2021

Led the development of a robust backoffice system for a European news website, utilizing a tech stack that included React for the front end and Node Express for the server-side logic. Acquired advanced skills in building dynamic user interfaces with React, ensuring seamless user experiences. Gained proficiency in crafting RESTful APIs with Node Express, allowing for efficient data flow between the front end and back end. Applied best practices in responsive design, optimizing the platform for various devices and screen sizes. Focused on performance optimization, ensuring rapid load times and high scalability. Engaged in code versioning and collaborative workflows using Git, employing consistent code reviews and rigorous testing methodologies to maintain code quality and reliability. This project demanded the integration of various APIs and third-party services, enhancing the platform's functionality and user engagement, thereby contributing to the overall success of the news website.
Fullstack Developer
9/1/2020 - 9/1/2021

Developed proficiency in creating an e-procurement system utilizing Java, Spring Boot, and Hibernate. Employed Angular for frontend development to enhance user experience and interface responsiveness. Demonstrated expertise in database management through PostgreSQL, ensuring data integrity and efficient retrieval. Integrated RESTful APIs and microservices architecture to streamline procurement processes and enhance system scalability. Utilized Docker for containerization, ensuring consistent development and production environments. Implemented robust security measures using OAuth2 and JWT. Employed Jenkins for continuous integration and deployment, reducing downtime and enhancing system reliability. Facilitated collaborative development and version control using Git. Demonstrated problem-solving skills by conducting thorough debugging and code optimization, delivering a system that efficiently manages procurement activities.