J

Juan Sebastian

About

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California, United States

Timeline

work
Job

Résumé

Jobs verified_user 0% verified
  • A
    Senior Full Stack Engineer
    AndesCloud Technologies
    Jan 2024 - Mar 2025 (1 year 3 months)
    • Led Agile/Scrum teams to improve project delivery speed by 47% through efficient task management.
    • Designed scalable front-end architectures, achieving a 28% improvement in application performance.
    • Built and optimized complex UI components with React/React Native, increasing usability by 40%.
    • Integrated SDKs and RESTful APIs, reducing API call times by 20% and enhancing app functionality.
    • Maintained unit tests with Jest, improving code coverage by 58% and reducing post-deployment issues by 63%.
    • Mentored junior developers, increasing team productivity by 22%.
    • Optimized frontend performance with memoization, lazy loading, and bundle optimization, boosting load times by 53%.
    • Utilized Python (Fa
  • Technova Solutions
    Full Stack Developer
    Technova Solutions
    Mar 2022 - Dec 2023 (1 year 10 months)
    • Developed 250+ reusable UI components using React, React Native, Vue, Angular, and TypeScript.
    • Implemented server-side rendering (Next.js), reducing load times by 20%.
    • Built and deployed cross-platform mobile applications using React Native, enhancing mobile user reach by 30%.
    • Designed 200+ RESTful APIs and microservices using Node.js, Python, AWS, improving response times by 13%.
    • Enhanced authentication security using AWS Cognito, increasing data protection by 38%.
    • Developed CI/CD pipelines with Docker & Kubernetes, cutting deployment times by 47%.
    • Provided mentorship and improved team efficiency by 21% through knowledge-sharing and code reviews.
  • ByteBridge Technologies
    Senior React Frontend Developer
    ByteBridge Technologies
    Apr 2019 - Jan 2022 (2 years 10 months)
    • Built dynamic UI components using React, Redux, and third-party libraries.
    • Integrated Metamask and Web3.js for Ethereum, Polygon, and BSC blockchain interactions.
    • Implemented Next.js-based SSR and containerized applications using Docker.
    • Developed and integrated Elasticsearch to improve search performance.
    • Designed and executed unit tests in TDD environments, increasing bug detection rates.
    • Optimized microservices with Node.js for MySQL and MongoDB, reducing response times by 34%.
    • Streamlined CI/CD pipelines, reducing deployment times by 40%.
  • C
    Full-stack Developer
    Chainware Systems
    Jan 2017 - Mar 2019 (2 years 3 months)
    • Migrated PHP-based applications to JavaScript frameworks (React, Vue, Angular), improving performance by 17%.
    • Developed secure payment gateways with PHP (Laravel) and Vue.js, boosting transaction speed by 33%.
    • Architected scalable databases using MySQL, PostgreSQL, MongoDB, increasing efficiency by 21%.
    • Created and optimized serverless functions using AWS Lambda, reducing deployment costs by 12%.
    • Improved testing processes, reducing software defects by 18%.
Education verified_user 0% verified
  • National University of Singapore
    Bachelor's degree, Ciencias de la computación
    National University of Singapore