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FitCheck
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Full-stack
Fashion social network—300+ users, 40% DAU, 62% D7 retention, 10.4K+ posts.
300+Users
40%DAU
62%D7 Retention
Architecture
Architecture
React Native
Node.js
MongoDB
AWS S3
Redis
Kubernetes
Digital Ocean
Technical Highlights
1
Designed React Native social app with personalized feed algorithm + real-time WebSocket updates—40% DAU, 62% D7 retention
2
Deployed on DO Kubernetes with Redis caching (90% hit rate)—serving 10.4K+ posts with <200ms feed load time
3
Optimized image pipeline: S3 + compression → 67% upload time reduction (15s→5s), improving post completion rate by 23%
Technologies & Tags
Mobile
Product
Infra