Woochang Chang
Springfield,VA
Summary
Portfolio : woochangchang.com
Software Engineer with hands-on experience building and troubleshooting full-stack web applications in production environments. Strong in debugging complex systems, analyzing API behavior, and resolving real-world issues. Experienced in React, REST APIs, and database integration. Proven ability to identify root causes, improve system performance, and deliver reliable solutions.
Overview
7
7
years of professional experience
Work History
Software Engineer
Circle POS
Springfield, VA
12.2025 - Current
- Developed digital restaurant menu system, enabling real-time updates and multi-language support for enhanced customer experience.
- Built a QR-based ordering platform using React and Next.js, enabling seamless customer ordering experience.
- Integrated frontend applications with backend APIs and POS database (C#/.NET, SQL Server), streamlining data communication.
- Troubleshot API communication issues and resolved data synchronization problems across systems.
- Improved load performance and reduced latency across mobile and tablet environments.
- Contributed to system design for POS integration, ensuring scalability and reliability of data flow across platforms.
Software Engineer
World Bankcard Services
Fairfax, VA
03.2025 - 11.2025
- Developed full-stack Korean taxi dispatch platform enabling real-time ride tracking and efficient driver management.
- Built a React-based web interface integrated with Google Maps API for live geolocation and route visualization.
- Designed and implemented RESTful APIs for ride requests, driver matching, and trip status updates.
- Diagnosed and resolved critical system issues including API failures, data inconsistencies, and UI rendering bugs to enhance platform reliability.
- Improved application performance by optimizing state management and reducing unnecessary re-renders.
- Investigated edge cases in asynchronous data flow and implemented fixes to ensure data consistency.
Software Engineering Intern
Atom Tech Solutions
Berkeley, California
09.2024 - 11.2024
- Developed a Yelp-like web application using Node.js, Express.js, MongoDB, HTML, CSS, and EJS.
- Implemented backend APIs and handled database operations for data storage and retrieval.
- Debugged and optimized application performance and improved frontend user experience.
Operations Specialist (UAV / Control Tower)
Republic of Korea Army
Seoul, South Korea
04.2019 - 11.2020
- Coordinated UAV operations and facilitated real-time communication between control units to enhance mission effectiveness.
- Ensured operational accuracy in high-pressure environments, contributing to successful mission outcomes.
- Coordinated logistics for personnel deployment and equipment management.
- Monitored supply chain operations to ensure timely resource availability.
- Assisted in developing operational protocols for efficient task execution.
Education
Master of Science - Computer Science
Binghamton University
Binghamton NY12-2024
Bachelor of Science - Computer Science & Applied Mathematics
University At Albany
Albany, NY12-2021
Skills
Languages: JavaScript, Python, Java, C
Frontend: React, HTML, CSS
Backend / APIs: REST APIs, Nodejs (basic), NET Entity Framework
Database: SQL, Microsoft SQL Server
Tools: Git, GitHub, Linux, Visual Studio
Core Strengths: Debugging, Troubleshooting, API Integration, Performance Optimization
Timeline
Software Engineer
Circle POS
12.2025 - Current
Software Engineer
World Bankcard Services
03.2025 - 11.2025
Software Engineering Intern
Atom Tech Solutions
09.2024 - 11.2024
Operations Specialist (UAV / Control Tower)
Republic of Korea Army
04.2019 - 11.2020
Master of Science - Computer Science
Binghamton University
Bachelor of Science - Computer Science & Applied Mathematics
University At Albany