<h3>Background</h3>
<p>A project commissioned for the development of the Incheon Paradise City Hotel app. <br>
Developed by adding mobile-exclusive features (e.g., mobile room key, location-based promotions) in addition to existing web service functions.<br>
The client had its own servers, so development was conducted on-premise.<br></p>
<h3>Responsibilities</h3>
<ul>
<li>App API design and development (100%)</li>
<li>Additional new feature development and server maintenance (100%)</li>
</ul>
<h3>Key Features</h3>
<ul>
<li>Hotel accommodation product inquiry, reservation, and payment</li>
<li>Room service requests during stay and admission QR code generation for facility use</li>
<li>Casino-exclusive: Casino point inquiry</li>
<li>Mobile room key issuance and card key information return</li>
<li>Ordering system available on web pads used by casino staff</li>
</ul>
<h3>Architecture</h3>
<p>Load balancing via L4 switching
<img src="/images/project_11/figure_1.png" alt="Project Screenshot" style="max-width:100%; height:auto; border-radius:12px; display:block; margin:auto;" /></p>
<p>Web App Application Architecture
<img src="/images/project_11/figure_2.png" alt="Project Screenshot" style="max-width:100%; height:auto; border-radius:12px; display:block; margin:auto;" /></p>
<p>Api Log Viewer
<img src="/images/project_11/figure_3.png" alt="Project Screenshot" style="max-width:100%; height:auto; border-radius:12px; display:block; margin:auto;" /></p>


Responsible for the end-to-end design, development, and maintenance of the App API server for the Incheon Paradise City Hotel. This project expanded the existing web-only services to a mobile app, introducing new features like mobile room keys and location-based promotions. The entire system was developed on-premise, utilizing the client's physical servers, and architected for high availability with L4 load balancing, Nginx reverse proxy, and an Express.js backend.

Designed, developed, and maintained the on-premise API server (Node.js/Express) for the Paradise City Hotel's mobile app, expanding services from web to mobile.

App API Server Design and Maintenance

A mobile app designed for guests of Paradise Hotel & Casino in Incheon. The app allows users to book hotel rooms, access information about hotel amenities, and request room service or housekeeping during their stay. It also provides convenient access to casino-related information, enhancing the overall guest experience.