Moohyen Lee Email & Phone Number

Jung-Gu, Seoul, South Korea

**SI Business AA / SA / Common Task Development** - SI Project On-site and Remote Support (GS M&B, HY, Hyundai Home Shopping) - Role: SA (Frontend), DevOps (Contribution: 70%) - Technologies: - SA: Spring Boot 2, Vue2-3, Nuxt2-3, Express.js - DevOps: Gitlab Runner, Harbor, AWS EKS - Responsibilities: - Provided frontend issue support - Supported CI/CD system setup - Hyundai Department Store - Group U2L Conversion Project - Role: SA / DevOps (Contribution: 35%) - Responsibilities: - Prepared risk reports for system server conversion - OS: AIX, CentOS - Middleware: Jeus, Weblogic10, Weblogic12 - CI/CD: Bash Script, Atlassian Bamboo - Provided technical support and training for the environment - Supported improvements to the CD/CD environment - Atlassian Confluence, Bamboo - Monitored and addressed application conversion issues - Java Application, C Application - Monitored and addressed issues during middleware and solution conversion - Jeus, WebToB - WebLogic, OHS - IPlanet, IHS - Websquare, Nexacro, etc. - Hyundai Steel - Steel E-commerce Platform Implementation Project - Role: AA (Frontend, DevOps) / Common Task Development (Contribution: 25%) - Technologies: Spring Boot 2, Vue3, Nuxt3 - Responsibilities: - Supported UI component creation - Developed and trained on extended components based on U.Stra Framework - Established CI/CD environments - Installed Redmine, GitLab, Jenkins - Developed Jenkins pipelines - Provided developer training - Framework training - Designed development architecture and created common functionalities - Addressed development issues and provided technical support - Developed common tasks

Seocho-Gu, Seoul, South Korea

**Group Company Business Management System Feature Enhancement and Operation** - Role: Developer (Contribution: 40%) - Technologies: Spring Framework 4, Kendo UI, JQuery - Responsibilities: - Collaborated with various management departments to improve the business management system: - Departments: Management, Finance, HR, Procurement, PM - Expense management & budget management functionality - Project management functionality - Personnel management functionality (in-house and outsourced staff) - Contract management functionality **Group Company ITO Service Operation and Developer Training** - Role: Technical Architect (Contribution: 80%) - Technologies: CentOS 7.x, GitLab, SVN, Jenkins, Apache HTTP Server, Apache Tomcat, Oracle DB - Responsibilities: - Managed services under the ITO service operation team: - Server issue management - Developer deployment management (Jenkins, GitLab) - Managed services: - Business management system - HR and accounting systems - Corporate websites for group subsidiaries - Established processes for monitoring abnormal access: - Technologies: GA, BASH - Created and documented a common development environment for the business management system: - Configured CI/CD servers (Jenkins, Redmine, GitLab) - Transitioned from SVN to GIT and provided training - Analyzed and improved discrepancies in Eclipse versions among developers - Configured STS development tools - Modified web server settings due to JVM issues: - Addressed monthly server performance degradation issues - Analyzed Java8 Heap Memory - Stabilized services by expanding Heap Memory Metaspace - ITGC (Internal Control Over Financial Reporting) developer control and documentation: - Managed open-source software - Created guides for using VCS (SVN, GIT): - Tool usage guides - Branch strategy guides

Jung-Gu, Seoul, South Korea

**Sempio Foods SWS System ERP Financial Accounting Module Development** - Role: Developer (Contribution: 80%) - Technologies: Spring Framework, Websquare, FORCS OzReport - Responsibilities: - Developed actual cost closing processes and created reports: - Standard cost management - Actual cost management - Cost accounting statement - Developed bad debt accounting processes and created corresponding reports

Yeongdeungpo-Gu, Seoul, South Korea

**Shinyoung Asset Management ERP Groupware Implementation** - Infrastructure Setup - Role: Systems Engineer (Contribution: 100%) - Technologies: VMware, CentOS, KTCloud, Jenkins, SVN - Database Migration - Role: Developer (Contribution: 30%) - Responsibilities: Migrated internal frameworks according to client requirements from MariaDB to Oracle DB - Design Mockup and Theme Design - Role: Designer (Contribution: 100%) - Technologies: Scss, Photoshop - Responsibilities: Created theme design mockups in 6 different colors, successfully confirmed by the client; Completed publishing - Accounting Process Implementation - Role: Developer (Contribution: 70%) - Technologies: Spring Framework 4, Jquery, Bootstrap, Oracle DB - Responsibilities: Managed accounting basic information, payment information, voucher template settings, and module data interfaces - Groupware and ERP Common Screen Development - Role: Developer (Contribution: 60%) - Technologies: Spring Framework 4, Jquery, Bootstrap, Oracle DB - Responsibilities: Developed calendar, draft management, main page, and file sharing features

Geumcheon-Gu, Seoul, South Korea

**EasApp Web Builder System Renewal Development** - Role: Developer (Contribution: 70%) - Technologies: PHP 5.4, CodeIgniter 3, AWS - Responsibilities: - Planned, analyzed, and proposed the solution - Managed the design and planning teams - Integrated external API solutions (reservation management) - Conducted responsive web builder publishing

Yeongdeungpo-Gu, Seoul, South Korea

**KT Bizmeka Accounting Module Renewal** - Project Common Framework Design and Development - Role: Developer (Contribution: 80%) - Technologies: Spring Framework 4.2, MariaDB, DHTMLX - Responsibilities: - General ledger management - Voucher approval - Client management - Branch management - Accounting basic information management - Balance carry-forward - Led the project team and conducted technical training. - Tuning of the Existing KT Bizmeka Accounting System - Role: Developer (Contribution: 50%) - Technologies: MariaDB, DHTMLX - Responsibilities: - Redeveloped functions to enhance the usability of the DHTMLX front-end commercial library and optimized memory management. - Monitored and optimized slow queries.

Gangnam-Gu, Seoul, South Korea

**Chatbot Builder Design Enhancement (Oct 2017 - Feb 2018)**- Role: Developer (Contribution: 30%)- Technologies: Angular 2, Sass- Responsibilities: - Improved the basic site design. - Fixed UI bugs and planned page layouts.**Chatbot Builder UI Improvement Planning, Design, and Prototype Creation (Feb 2018 - Jun 2018)**- Role: Developer (Contribution: 80%)- Technologies: Angular 5, Sass- Responsibilities: - Created a UI improvement plan. - Developed the design plan. - Performed screen publishing. - Developed APIs and wrote UI scripts. - Enhanced the Chatbot Builder design and maintained its functionality.

Seodaemun-Gu, Seoul, South Korea

**ClassPrep Research Model Maintenance and Feature Enhancement (Mar 2015 - Jun 2015)**- Role: Developer (Contribution: 80%)- Technologies: PHP 5.4, Cafe24 Hosting- Responsibilities: - Managed the existing server hosted on Cafe24 and performed bug fixes. - Provided data summaries for research paper utilization.**ClassPrep Business Model 1.0 Development (Apr 2015 - Oct 2015)**- Role: Developer (Contribution: 100%)- Technologies: PHP 5.4, CodeIgniter 3, AWS, UIkit, Gulp- Responsibilities: - Designed the basic layout using the UIkit CSS framework. - Led the development of UI scripts and backend functionalities. - Managed server operations and provided data summaries for research papers.**ClassPrep 2.0 Development (Oct 2015 - Jul 2017)**- Role: Developer (Contribution: 80%)- Technologies: PHP 7, PHP 5.4, CodeIgniter 3, AWS, UIkit, Gulp- Responsibilities: - Designed the project architecture and developed algorithms. - Assisted with design tasks, screen publishing, and UI script development. - Managed server operations and backend development. - Provided data summaries for research paper utilization as a supplementary task.**Educational Program Planning (May 2016 - Aug 2016)**- Role: Planner (Contribution: 100%)- Responsibilities: - Planned a group management system using big data. - Developed ClassPrep for entrepreneurship education and career management.

Geumcheon-Gu, Seoul, South Korea

**Korea Advanced Institute of Science and Technology (KAIST) Recruitment Management System Development (Aug 2014 - Mar 2015)**- Role: Developer (Contribution: 50%)- Technologies: e-Government Framework, AIX, JQuery- Responsibilities: - Led the development of the system for applicants, including network and server environment configuration. - Assisted with design tasks and developed email transmission scripts using Oracle PL/SQL.**Korea Environment Corporation Refrigerant Information Management System Enhancement (Jun 2014 - Aug 2014)**- Role: Developer (Contribution: 30%)- Technologies: e-Government Framework, AIX, JQuery- Responsibilities: - Performed screen publishing tasks. - Developed simple pages and fixed bugs.

Gwangjin-Gu, Seoul, South Korea

**Friguard UI Enhancement (Oct 2012 - Oct 2013)**- Role: Developer (Contribution: 80%)- Technologies: Flex3, PHP 5.4- Responsibilities: - Developed and maintained the dashboard, focusing on bug fixes. - Optimized the UI performance of the report system development solution. - Performed database query tuning.**Wireless AP Log System UI Development (Nov 2012 - Dec 2012)**- Role: Developer (Contribution: 100%)- Technologies: Flex3, PHP 5.4- Responsibilities: - Cloned existing solutions and collaborated with partners to draft and implement development plans.**Friguard Automatic Installation Module Development (Sep 2013 - Nov 2013)**- Role: Developer (Contribution: 100%)- Technologies: Java Applet- Responsibilities: - Strategically planned and developed a solution for easier agent program distribution. - Developed algorithms and implemented the program. - Modified SSL certificates for .NET applications and integrated them into the distribution program.**Riorey Log System UI Development (Jul 2013 - Aug 2013)**- Role: Developer (Contribution: 100%)- Technologies: Flex3, PHP 5.4- Responsibilities: - Cloned existing solutions and adapted them to fit the Riorey (a foreign DDoS security product) system.