Jihye's Blog

What Did I Do?

I contributed to both frontend and backend development, playing a key role in delivering critical features efficiently.

Key Contributions:

• Developed RESTful APIs to generate PDFs from object data, store them in AWS S3, and retrieve them when needed.
• Created a UI application to track and manage the customer contract process, improving transparency and operational efficiency.
• Designed customer-facing UI pages for invoice history, ensuring a seamless and user-friendly experience.
• Implemented webhooks to automate internal workflows, increasing productivity and minimizing manual effort.

Technologies & Experience

Node.js & Express

• Developed RESTful APIs to facilitate invoice generation and storage.
• Ensured stable API performance through efficient request/response handling with express.
• Integrated logging and error-handling mechanisms for improved reliability.

Puppeteer

• Automated PDF generation using a headless browser.
• Rendered dynamic HTML templates to create structured and branded PDFs.
• Enhanced performance for faster and more efficient PDF creation.

AWS S3 (SDK)

• Integrated AWS S3 for seamless invoice storage and retrieval.
• Utilized PutObjectCommand for uploading PDFs and GetObjectCommand for on-demand file access.
• Configured S3Client for optimized file management and performance.

File System (fs)

• Used fs.readFileSync() and fs.createWriteStream() for efficient local file operations before uploading to S3.
• Implemented automated file cleanup to prevent storage bloat and inefficiencies.

Next.js

• Built an invoice history page leveraging server-side rendering (SSR) for improved speed and SEO performance.

React

• Developed modular and reusable UI components for a scalable frontend architecture.
• Optimized API performance by utilizing GraphQL queries for data retrieval.