jansenc08

Built and maintained wallet transaction features for a global crypto trading app used by millions of users, using Swift, UIKit, and Objective-C. Improved UI responsiveness by optimizing data handling and rendering, resulting in smoother scrolling and faster screen load times. Increased end-to-end test coverage by 15% using Appium, integrating tests into CI pipelines to catch regressions before release. Reduced regression issues and improved app reliability by strengthening automated test coverage across critical user flows. Worked closely with backend engineers, designers, and product managers to deliver features end-to-end and align on user experience.

Developed and enhanced a berth planning system used by planners and operations teams for daily port operations. Built frontend features using Angular, improving usability for scheduling, vessel tracking, and operational dashboards. Contributed to backend services using Spring Boot to support real-time data updates and system integration. Migrated key features from the legacy CITOS system to a modern tech stack, improving system maintainability and usability. Supported a system used by hundreds of internal users, helping streamline planning workflows and reduce reliance on legacy processes.

Built responsive UI components using React, improving usability for internal tools. Improved page responsiveness and load performance by optimizing component rendering. Integrated frontend with backend APIs to ensure smooth and reliable data flow. Fixed UI issues and improved overall user experience based on feedback.

Developed UI components using HTML, CSS, and JavaScript. Designed and developed RESTful APIs to enable smooth data exchange between systems. Authored API documentation for Web services and the Kiosk Management System, improving onboarding and knowledge transfer for future developers.