Shield J.
Senior Full-Stack Developer
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About
Shield J. is a detail-oriented senior software engineer with a background in full-stack development, specializing in modern web applications. At Sofihub, a HealthTech Monitoring Platform, he served as a Frontend & Mobile Developer from October 2018 to April 2021. Here, he developed responsive and interactive web interfaces and mobile applications, utilizing technologies like React.js and Flutter, to manage connected safety devices and real-time alerts. His role involved close collaboration with backend engineers and product designers to ensure a scalable and maintainable application architecture. Later, at SmartShanghai/Smash-Asia, from June 2021 to February 2026, Shield excelled as a Frontend & Backend Developer. He improved user experience and system performance by implementing state management solutions with Redux and enhancing web functionality with Node.js. His comprehensive skill set includes JavaScript, REST APIs, and Node.js, affirming his capacity to deliver high-quality, scalable, and maintainable code. Shield holds a Bachelor's degree in Software & Computer Engineering from the European University of Madrid.
Experience
Frontend & Backend developer
SmartShanghai/Smash-Asia · 2021 — 2026Designed and developed responsive user interfaces with React.js and Node.js for dynamic web applications of the SmartShanghai website, enhancing overall user experience. Implemented state management solutions using Redux for efficient data flow across the system. Integrated features such as search functionality and recommendation systems to improve performance when navigating extensive content. Created an admin dashboard for content management, enabling editors to efficiently create, update, and publish materials. Strengthened skills in performance optimization, security enhancements, and debugging for system reliability within the Smash-Asia application.Frontend & Mobile Developer
Sofihub · 2018 — 2021Created responsive and interactive web interfaces for Sofihub's website utilizing modern frontend technologies, ensuring cross-browser compatibility and an enhanced user experience. Maintained and developed features for the mobile application, allowing users to manage safety devices and receive real-time alerts. Integrated UI components and application logic for device monitoring and configuration, collaborating closely with backend engineers and product designers to ensure a scalable application architecture. Focused on optimizing performance, component architecture, and providing a user-friendly design across web and mobile platforms.
Skills & Expertise
Education
- Bachelor of Science, Software & Computer EngineeringEuropean University of Madrid · 2014 — 2018