◎ CASE / 028◎ WEB · APP◎ KR◎ 2023● LIVE
SK E&S
farfreecar EV Charging
farfreecar EV Charging
Integrated EV charging search, payment & booking — web, mobile, and admin.
ROLE
Full-stack Development · Architecture Design
PERIOD
2023.03 — 2023.11 (9 months)
MARKET
KR
HEADLINE
Full-stack · Web+App+Admin
(01) Challenge · The problem
“Starting point”
As EV charging infrastructure expanded rapidly, station discovery, reservations, payments, and operations control were running in silos. Drivers had to juggle several apps just to find an open charger, and operators had no single dashboard for real-time status.
(02) Solution · How we solved it
“Approach”
We unified discovery (web + app), payments (Toss), reservations, and admin control on a single stack. OCPP integration drives real-time status, sessions, and billing through a serverless event pipeline. Drivers filter stations on the map, hold an open slot for 15 minutes, then start and pay for a session via QR — end-to-end in one flow.
(04) Outcomes · Results
Proven by numbers.
Full-stack
Web · iOS · Android · Admin
Single TypeScript monorepo, unified deploy across 4 surfaces
<300ms
Real-time charger status
MQTT + PostgreSQL LISTEN/NOTIFY event pipeline
-65%
Operator response time
Auto-detect anomalous sessions, one-click remote control
15 cities
Launch coverage
Simultaneous launch across Seoul metro, Busan, and Daejeon
(05) Stack · Tools used
Trusted tools only.
01 · Frontend
- ▸Next.js 14 (App Router)
- ▸React Native (Expo)
- ▸TypeScript
- ▸Tailwind CSS
- ▸Mapbox GL
02 · Backend
- ▸Node.js
- ▸Fastify
- ▸PostgreSQL
- ▸Redis
- ▸MQTT (OCPP 1.6J)
03 · Infra
- ▸AWS ECS Fargate
- ▸RDS Multi-AZ
- ▸CloudFront
- ▸S3
- ▸Datadog
04 · Integrations
- ▸Toss Payments
- ▸Kakao Login
- ▸NAVER Map API
- ▸Ministry of Environment Charger Open API
▸ Related · WEB · APPALL PROJECTS →
START / FREE CONSULT · NDA OK