Open to opportunities

zack lee

@zacklee

Software Engineer at Rinnai building smart home apps with React Native, Tuya SDK, and real-time Heat Pump control.

At iZone, Rinnai Manufacturing, I develop and maintain web and mobile web applications for smart home system management. I’ve added scheduling, automation, and device-control features, and integrated mobile apps with Tuya SDK and cloud services for real-time Heat Pump control and monitoring.

At Hitachi ebworx, I participated in change requests and bug fixes for hybrid banking apps for Bank Danamon Indonesia and React Native apps for CIMB Niaga Indonesia. I worked on features such as SMS OTP registration and account activation, and guided junior team members on coding practices.

At Enteger Sdn Bhd, I developed Angular and TypeScript interfaces and REST API components, and worked on database schemas and SQL queries. Earlier, at I-CITY Properties Sdn Bhd, I worked on systems for QR code ticket generation, customer rewards, trip management, and receipt printing.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

iZone, Rinnai Manufacturing

Sep 2024 - Present (2 years 1 month)

Developed and maintained web and mobile web applications for smart home system management, supporting end users, technical support teams, and installers. Enhanced existing mobile applications by implementing new features including system scheduling, automation, and device control.

React Native TuyaSDK Cloud Services Mobile Application Developer UI UX Design Responsive Design

Senior Mobile Engineer

Hitachi ebworx

Mar 2022 - Aug 2024 (2 years 5 months)

Participated in change requests and bug fixing for web app, Android, and iOS hybrid apps for Bank Danamon Indonesia and React Native for CIMB Niaga Indonesia. Added features including SMS OTP registration, account activation, and multiple currency accounts.

React Native Apache Cordova Android iOS Hybrid App Development API Integration Testing Debugging

Fullstack Software Engineer

Enteger Sdn Bhd

May 2019 - Feb 2022 (2 years 9 months)

Wrote and maintained program code for the user interface using Angular and TypeScript, implementing the Ng-Zorro UI library. Developed front-end services, RESTful API endpoints, and SQL queries for CRUD operations.

Angular TypeScript NG ZORRO REST APIs SQL Database Design Spring Boot JavaScript

Software Engineer

I-CITY Properties Sdn Bhd

Nov 2018 - Apr 2019 (5 months)

Wrote and maintained program code such as QR code ticket generation, customer point rewarding, trip management, and receipt printing. Performed routine database maintenance tasks and researched Arduino and C++ to integrate VISA pay-Wave parking system.

QR Code Database Maintenance Arduino C++Technical Documentation

Education

Degrees, certifications, and relevant coursework

University of Wollongong, Australia

Bachelor's Degree, Computer Software Engineering & Digital System Security

2016 - 2018

Bachelor's Degree Dual Major in Computer Software Engineering & Digital System Security from the University of Wollongong, Australia, completed from August 2016 to August 2018.