Product Engineer
KiJeong Yang
From planning and design to deployment and operations,
a product engineer who drives the full product lifecycle.
About
About Me
KiJeong Yang
Product Engineer
Engineer Information Processing
I turn ideas into real products.
Starting with a simple order-recording app I built while working as a server in 2017, I have worked across the full spectrum of product development — Android, AOSP, embedded systems, web, backend, deployment, and operations.
Beyond just implementing features, I focus on reliably solving real user problems in production environments.
Currently at an AIoT solutions company, I handle end-to-end IoT product development: RK3588-based Android/Linux gateway development, Modbus/BLE/Sub-G sensor integration, and cloud monitoring platform connectivity.
Projects
Projects
IoT Integrated Control System
GS25 Convenience Store Pilot (60+ stores) — Solo design and implementation from AOSP customization to Android app
- ▸GS25 pilot: 150 devices across 60+ stores (government-funded project)
- ▸Data loss rate: 4.0% → 0%, error-to-success recovery: 37.1% → 100%
- ▸AOSP Android 13 (RK3588) customization — IR/Relay driver development
MyCONECT Hotel Service Platform
Google Play deployment and maintenance — BLE/REST-based comprehensive hotel solution
- ▸Released on Google Play Store (check-in/out, room service, payment)
- ▸BLE-based door lock, elevator, and room device remote control
- ▸Built in-house BLE dev tool Bluetena
Leak Detection System
SubG wireless firmware customization + Android app solo design and implementation, delivered
- ▸Sub-GHz wireless communication for long-range, low-power real-time detection
- ▸Android app solo design and implementation (detection data visualization and management)
- ▸Delivered to client
The website you are viewing right now is the live demo.
Personal Portfolio Website
Solo end-to-end: planning, design, development, and deployment
- ▸SEO optimization with SSR/SSG mix and responsive layout
- ▸Framer Motion animations throughout
Company Website (UTAREX)
Solo end-to-end — ranked #1 on Google Search, currently live
- ▸Achieved #1 ranking on Google Search
- ▸Led migration from Node.js backend to Cloudflare Pages static site
- ▸Solo end-to-end: planning, design, development, and deployment
In-house Productivity Tools
Memo app colleagues actually use and Python scripts automating repetitive data collection
- ▸Daily Reporter: daily work log app (used by teammates)
- ▸Automated product data collection rate aggregation (openpyxl)
- ▸Single-exe PyInstaller distribution with startup registration
InOutCountBar
From internal need to JitPack release — Android open-source custom view library
- ▸Visualizes IN, OUT, and COUNT metrics in a single bar chart
- ▸Released on JitPack (com.github.wjjasd:InoutCountbar:1.0.1)
- ▸XML custom attributes and smooth animation support
Skills
Tech Stack
Android / Mobile
Embedded / Hardware
Web Frontend
Backend / Infra
Analytics / SEO
Automation / Collaboration
Certifications
Experience
Experience
2024.02 ~ 현재
Current유타렉스 (UTAREX)
Android / Embedded / Web Frontend / Cloud Architecture
- ▸IoT integrated control system design and implementation (GS25 pilot, government-funded)
- ▸AOSP Android 13 (RK3588) customization — pinmap, IR, Relay driver development
- ▸SubG leak detection system firmware customization and Android app development
- ▸NCP-based IoT monitoring server architecture design
- ▸Android open-source library InOutCountBar development and JitPack release
- ▸Company website planning, development, and deployment (Cloudflare Pages, #1 on Google)
- ▸In-house productivity tools development (Daily Reporter, Python aggregation automation)
2021.01 ~ 2023.04
홀리츠 (Holich)
Android Development
- ▸Feature development and maintenance for hotel solution MyCONECT Android app
- ▸BLE-based door lock, elevator, and room device control (third-party SDK integration)
- ▸MVVM + RxKotlin architecture, Google Play Store deployment
- ▸Built in-house BLE dev tool Bluetena
![[Android] 기기에 MQTT Broker 돌리기. How to run a MQTT broker on android device](https://blog.kakaocdn.net/dn/LknJt/btsKmkUPzWh/zEnO7ydNIstDOpNzYsokb1/img.png)
Contact
Get in Touch
Feel free to reach out if you have any questions.