Sheory Martins

Experience

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  ECGlobal Solutions

  May 2021 - Aug 2021

  Front End Developer Intern | ReactJs | CSS

  • Developed new features for the company’s legacy social networking platform using React.js and Atomic Design principles, ensuring adherence to existing design patterns. This approach enhanced the user interface and contributed to a 5% increase in user engagement.• Used a robust data fetching mechanism using GraphQL enhancing the application’s performance by reducing loading times and delivering seamless user experiences in React applications.

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  BYJU'S

  Jun 2021 - Oct 2021

  Programming Instructor | JavaScript | HTML | CSS

  • Instructed programming classes for approximately 20 children and teenagers, tailoring lessons to meet individual needs, including students with autism and hyperactivity.• Taught programming fundamentals and machine learning concepts using JavaScript and ECMAScript, guiding students through code analysis, debugging, and understanding errors and exceptions.• Tutored students on creating responsive websites using HTML, CSS, JavaScript, and Bootstrap, emphasizing best practices in web development. Show less

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  SenseData

  Sept 2021 - Jul 2022

  • Prioritized and executed timely hotfixes to address critical production bugs, ensuring system stability and high performance, with a commitment to resolving issues within 24 hours of discovery.• Optimized backend workflows within an all-encompassing customer success monolith through Python and Flask solutions; enhanced system reliability and reduced downtime by 50%, ensuring uninterrupted service delivery for end-users • Contributed to a project that standardized backend development by establishing consistent practices for coding, testing, and documentation. Improving over 20 existent features. Show less

  • Back-end Developer | Python | FastAPI | Flask | PostgreSQL | MongoDB | ReactJs

    May 2022 - Jul 2022

  • Python Developer Intern | Python | Flask | PostgreSQL | MongoDB | ReactJs | JQuery

    Sept 2021 - Apr 2022
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  Serasa Experian

  Jul 2022 - Apr 2023

  Back-end Developer | Python | FastAPI | AWS | Rancher | Jenkins | Redis

  • Managed and improved existing microservices while developing new ones using Python and FastAPI for a team specializing in credit card and loan solutions, contributing to systems processing over 1 million requests daily.• Led end-to-end development of 3 big features, from initial scoping and refinement via Jira to deployment using Jenkins, AWS, and Rancher, ensuring seamless integration and performance.• Utilized Splunk and Datadog for monitoring 100% of existent routes and implemented Redis for efficient data caching, optimizing system performance and reducing latency. Show less

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  ZENVIA

  Apr 2023 - Nov 2024

  Back End Developer PL | Python | FastAPI | Flask | PostgreSQL | MongoDB | Kafka

  • Develop and maintain features for both a customer success monolith and new microservices, with a primary focus on backend development using Python, Flask, and FastAPI. Ensured high code quality by maintaining at least 90% unit test coverage.• Implemented optimized queries and database solutions using MongoDB and PostgreSQL to address performance issues, resulting in an average 70% improvement in response times and a significant reduction in system bottlenecks.• Lead a refactoring initiative to improve the monolith's performance, reusability, and scalability, achieving more than 20% gains in efficiency per feature. Show less