Software Engineer

Heetae Lee

Software Engineer

Built to Run.

Designed to Last.

I organize complex requirements into simple structures and build backend systems that keep running in real service environments.

Backend Engineering

API · Batch · DB

API Integration

Service · Partner

Data Flow

Process · Verify

Issue Analysis

Trace · Improve

Download Portfolio (KO)View Projects

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public class BackendService {
  void build() {
    analyze();
    designFlow();
    implement();
    deploy();
    monitor();
    improve();
  }
}

API

Deploy

Monitor

Career Summary

5+ Years

Software Engineering

Partner Integration

API · Batch · Search

Java · Spring Boot

Oracle · MyBatis

AI API

Flask · Docker

Work Experience

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2021.12 - Present

4 yrs 9 mos

SK m&service

Software Engineer

Implemented backend services connecting APIs, batch jobs, databases, search exposure, and admin features for welfare and travel commerce platforms
Designed and implemented product, order, search-data, and external partner-integration flows from a service perspective
Built a Travel AI Q&A API with Python/Flask and Azure OpenAI, covering Docker, GitLab CI, and Nomad deployment validation

2020.11 - 2021.06

8 mos

Hansung Enterprise

Software Engineer

Developed internal logistics and order-management web systems for a food manufacturing and distribution company
Expanded role-based access for an order-information system while working with internal business workflows and data-processing structures

Core Projects

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Travel & Leisure Partner Integration Platform

Professional Work · SK M&Service · 2025 - Present

Partner API · Batch · Oracle · Search

Backend integration platform project connecting multiple travel, accommodation, and leisure partners to order, product, and search flows, verifying recurring partner data and a large product pool across API, batch, database, and search-exposure criteria.

JavaSpring BootOracleBatchJava Concurrency

Details

Travel AI Q&A API Development

Professional Work / TF · SK M&Service · 2023

Python · Flask · Azure OpenAI · Docker · GitLab CI · Nomad

Built the company's first Python/Flask-based TourGPT Gateway API Server during the early ChatGPT adoption wave in 2023, connecting GPT-3.5 Turbo on Azure OpenAI, Oracle, Docker/GitLab CI/Nomad, and production deployment validation.

PythonFlaskAzure OpenAIDocker/Nomad

Details

AI-DLC: Personal AI-Assisted Engineering Workflow

Personal Workflow

Markdown · Codex · Claude Code · Human-in-the-loop

A personal AI-assisted engineering workflow that runs AI-DLC through Context -> Analyze -> Verify -> Communicate -> Learn.

MarkdownCodexClaude CodeHuman-in-the-loop

Details

KTO Hyugashop Web/App Commerce Service Development

Professional Work · SK M&Service · 2024 - Present

Web/App · Admin · Oracle · Batch · Statistics

Feature development for Korea Tourism Organization (KTO) Hyugashop, connecting user, admin, and customer-portal functions with product, order, point, and statistics data flows.

JavaSpring BootOracleBatchRedis

Details