Building reliable systems where Web, Mobile, and real-world operations meet.

Check out my Portfolio on Notion 👉

SI Developer focused on building end-to-end operational systems
—from real-time data collection to monitoring, control, and UI delivery.

I specialize in:

• Real-time data pipelines (MQTT / Sensor / API)
• Web-based monitoring dashboards
• Flutter-based field operation apps
• System integration across Web, Mobile, and IoT

✔ Design data flow architecture (Sensor → Gateway → Server → UI)
✔ Build real-time monitoring systems
✔ Implement control & command systems (ACK / Retry / Timeout)
✔ Develop field-ready mobile apps (Flutter)
✔ Structure maintainable front-end architecture

• Built real-time monitoring system using MQTT-based streaming
• Processed AML sensor data (battery, load, distance)
• Designed command-response structure for remote control
• Developed Web dashboard + Flutter field app

👉 Result:

• Real-time visibility of vehicle safety status
• Improved operational response speed

• Designed digital TBM (Toolbox Meeting) system
• Integrated bio-signal + gas sensor data
• Implemented risk detection logic based on thresholds
• Built monitoring + reporting system

👉 Result:

• Digitized safety process
• Enabled historical tracking & risk analysis

• Developed real-time interactive services
• Built content-driven UI/UX systems
• Delivered stable operation systems for public environments

• Developed interactive exhibition services
• Built real-time responsive UI for public installations

• Designed and implemented curriculum-linked educational game
• Focused on user engagement and scenario-based interaction

• React, TypeScript, HTML5, CSS3
• Flutter, Dart

• Spring Boot
• Tomcat
• MariaDB

• AWS
• MQTT / MQTTX
• TensorFlow Lite
• OpenCV

• Visual Studio Code
• Android Studio
• Eclipse
• GitHub
• Slack
• Notion

• Excel, Word, PowerPoint
• 한글(HWP)

• DAINLab — SI Developer (2025.01 - Present)
• AROUND Inc. — SI Developer (2021.04 - 2024.12)

• Improving front-end architecture and code quality
• Working on production-level Web & Mobile SI services

Good UI is not just about screens.
It is about connecting systems, data, and real-world operations reliably.