Architecting, planning, and developing Cyberbiz Automation from scratch, including choosing the technology stack. Refactoring legacy React code, resulting in a 20% improvement in performance and speed. Creating tests for various use cases, including unit tests and integration tests. Independently developing internal npm packages across projects and teams for using. Collaborating with backend developers, product managers, and UI/UX designers in a scrum environment to provide front-end solutions. Conducting code reviews for team members and engineers from other teams. Refactoring an old e-commerce checkout system, which increased customer satisfaction by 70%. Implementing a browser error monitoring system with Sentry. Leading and mentoring more than 2 junior engineers. Contributing to backend development and testing on Ruby on Rails. Developing our own UI library project with Storybook, named Pitaya UI Component.

Product feature development, maintenance, and front-end solution provision. Refactored legacy system's front-end code, improving system performance and developer experience by over 30%. Collaborated with backend engineers on API details and implemented UI designs and plans. Independently developed a Single Sign-On (SSO) login system and environment setup for a well-known e-commerce client.

Developed front-end features for financial client products. Create Restful API with C# .Net core