Ki Joon Lee Resume

Professional Summary

Database developer with 3+ years of experience specializing in SQL Server/T-SQL and a background in object-oriented programming, web development, and application support. Worked with a senior developer to build an ERP system from scratch, gaining hands-on experience across the software development life cycle (SDLC). Experienced in troubleshooting application issues, training end users in different roles and with varying levels of familiarity with the software and working directly with clients to provide web applications. U.S. Army Reservist with a strong sense of accountability, security awareness, and the ability to perform reliably under pressure and adapt to demanding schedules.

Skills

Data Engineering : SQL, T-SQL, ETL workflows, data transformation, data synchronization, reporting, relational schema design, query optimization

Databases & Cloud : SQL Server, SQL Server Agent, AWS RDS, basic MySQL familiarity

Programming : Python, C#, JavaScript, Java, Visual Basic

Tools : Git, GitHub, VS Code, SQL Server Management Studio (SSMS), WinForms

Experience

Jastintech

Apr 2024 — Dec 2025

Programmer Analyst Associate

Ellicott City, MD

Worked directly with clients to understand business requirements for web applications and provide solutions.
Built Python scripts to automate recurring invoices, documents, and data-processing tasks, reducing manual labor.
Supported Windows PCs, routers, switches, and network connectivity when infrastructure issues affected application availability

Beauty4U

Jun 2021 — Mar 2023

Database Developer

Temple Hills, MD

Designed and developed a point-of-sale system using WinForms / C# / SQL Server, supporting daily operations for over 20 retail stores.
Developed stored procedures and SQL Server Agent jobs to automate data synchronization between the centralized database and various store databases.
Implemented complex T-SQL workflows using cursors, triggers, and stored procedures to convert raw sales, inventory, and customer data into report-ready information.
Tuned slow queries and stored procedures by reviewing joins, and indexing as data volume and reporting needs grew.
Migrated operational databases from a local SQL Server to AWS RDS to improve availability and reduce downtime, coordinating schema changes and data movement with minimal service downtime.

Projects

Personal Portfolio Website

Built and maintain a personal website to showcase technical projects and development work:
www.standardlee.info

Education and Training

University of Maryland

Sep 2026 — May 2029(Expected)

Bachelor of Computer Science

College Park, MD

U.S. Army Reserve

Dec 2025 — Present

Automated Logistics Specialist

Suffolk, VA

Northern Virginia Community College

Sep 2021 — May 2024

Associate of Science, Computer Science

Annandale, VA