ENKO

Seung-ryeol Choi

Hi, I’m a software engineer who solves performance and system issues in production.

I currently help operate an e-commerce platform at Hyundai Futurenet, identifying and resolving the causes of issues such as traffic spikes and performance bottlenecks. Recently, I’ve also been exploring how to make AI produce results that are practical enough to use in real-world workflows.

  1. What I Had to Teach an AI Before It Could Generate English Questions

    Building an LLM-Based English Question Generation Service

  2. Keeping the Rest of the Service Running Even with 100,000 People Waiting

    Building a Queueing System for Events

  3. Why Was Next.js So Slow?

    Finding the Bottleneck in Node

  4. A New System on the Inside, No Surprises on the Outside

    Renewing a Legacy OpenAPI System.

  5. The Most Nerve-Racking Moment I’ve Had as a Developer

    Preventing API Key Exposure in Advance