01
EXTREME SCALE
High-Traffic Travel Platform
Distributed architecture for a top-tier Korean travel business, designed around extreme burst traffic and high-concurrency transaction patterns.
Distributed SystemsExtreme TrafficScalability
DEVCRANE · TECHNOLOGY ADVISORY
COMPLEX
TECHNOLOGY.
CLEAR DECISIONS.
Architecture, engineering and technology strategy. Three decades of experience from engineer to founder, CTO and technology leader — translated into business decisions.
30+
YEARS
KR ↔ VN
CROSS-BORDER
1M+
DEVICE SCALE
0 → SCALE
ARCHITECT → OPERATOR
SELECTED WORK
Not a stack list.
A record of problems owned.
02
RETAIL
1M+ ESL Infrastructure
On-premise and HA infrastructure planning for a retail deployment exceeding one million electronic shelf labels across a 200-store target footprint.
1M+ DevicesOn-premiseHA Architecture
03
PLATFORM
Smart Retail Platform
Connecting POS, inventory, B2B, payments, cloud infrastructure and observability as one operating platform.
Retail TechPOSCloudObservability
04
MOBILITY
100K-user Service Platform
Distributed backend engineering for a consumer mobility and care platform operating at six-figure user scale.
100K UsersDistributed BackendProduct Engineering
05
CONNECTED DEVICE
Bluetooth-connected Product
A connected product spanning Bluetooth dongle interaction, mobile experience, device integration and distributed backend.
BluetoothMobileDevice Integration
INSIGHTS
Architecture
Designing Retail Systems at Million-Device Scale
What to decide before counting servers when architecture must support more than a million connected retail devices.
Engineering Leadership
Why Korea–Vietnam Engineering Teams Slow Down
The bigger problem is often not language, but decision structure and ownership boundaries.