Samuel Guedes

Experiences

  • Software Engineer

    Petlove 💜 | E-commerce & Pet Healthcare
    Sep 2025 - Present

    Full-stack development on Brazil's largest pet e-commerce and healthcare platform, focusing on SEO and catalog infrastructure across product verticals including pet health insurance and petshop store franchises.

    • Optimization of Core Web vitals across e-commerce products catalog and pet healthcare, promoting organic traffic growth.

    • Improve catalog structured data (JSON-LD).

    • Optimize sitemap generation.

    • Development of Indexable Search mechanism.

    • Collaborate building healthcare dynamic landing-pages.

    • Built a Footer Link management panel, and rebuilt component into a design system to be used across different projects.

    • Improve FAQs management panel

  • Software Engineer

    Equatorial ⚡️ via Nepen | Energy Provider
    Dec 2024 - Jun 2025

    Frontend development of an energy platform and system migration.

    • Collaborated in migrating legacy systems to a new architecture

    • Developed energy consumption visualizations using Vue and Chart.js

    • Built interfaces for meter management, including registration, data transformation, data visualization with custom queries, and data import

    • Implemented user access recovery functionality

  • Software Engineer

    Just Travel ✈️ | Travel Tech
    Aug 2022 - Nov 2024

    Full-stack development of a tourism platform. Implemented a shopping cart with a checkout system, complex asynchronous processing queues, payment processing, notification delivery, caching, and back-office visualization using React, Next.js, Elixir, Phoenix, Oban, Redis, and PostgreSQL.

    • Contributed to the implementation and maintenance of attraction ticketing, hotel bookings, travel insurance, and car rental services

    • Developed dynamic product catalog pages for Tickets, Hotels, Car Rentals, and Travel Insurance using GraphQL for efficient and performant data fetching

    • Designed and implemented a caching system for frequently accessed data using Redis and PostgreSQL

    • Built a comprehensive shopping cart system, checkout process, and shopping cart sharing functionality

    • Created data visualization dashboards for back-office operations with custom filters and metrics

    • Implemented user sign-up, JWT token authentication, and role management systems

    • Developed a custom CMS for managing content and products

    • Built a notification system for sending emails using Oban and AWS SES

    • Integrated third-party APIs for content consumption, payment processing, and CRM tools

    • Developed asynchronous processing queues and feature flag functionalities

  • Software Engineer

    CrediSIS 💰 | Fintech
    May 2021 - Mar 2022

    Full-stack development of a financial services platform. Implemented Internet Banking functionalities, PIX (Brazilian instant money transfer) cash withdrawal and exchange features, balance visualization enhancements, and daily transaction limit management using Elixir, Phoenix, Oban, TypeScript, Angular, Ionic, and MySQL.

    • Implemented and maintained Internet Banking functionalities for the financial services platform

    • Developed balance visualization enhancements and daily transaction limit management for Internet Banking

    • Built PIX cash withdrawal and exchange features for Internet Banking

    • Integrated third-party REST APIs for data validation and transaction processing

  • Software Engineer

    Premium 🏆 | Digital Marketing Agency
    Jul 2020 - Apr 2021

    Full-stack development of a financial services platform. Implemented Internet Banking functionalities, PIX (Brazilian instant money transfer) cash withdrawal and exchange features, balance visualization enhancements, and daily transaction limit management using Elixir, Phoenix, Oban, TypeScript, Angular, Ionic, and MySQL.Full-stack development of landing pages. Created UX/UI prototypes and responsive pages. Web development and integration with third-party APIs for user activity tracking.

    • Developed responsive landing pages for clients, products, and services using React, Next.js, CSS, and Sass

    • Designed UI prototypes using Figma, ensuring responsive design for desktop and mobile devices

    • Developed APIs for communication with third-party CRM tools to handle user subscriptions

    • Integrated Google Analytics to track user activities and improve conversion rates

    • Deployed web applications using Docker and Digital Ocean

See my skills