Fitness · Social
Magic Mountain
Social fitness app with wearable integrations.
Role · Full-Stack EngineerYear · 2022
−70–80%
analytics API response time
01 — The problem
Slow analytics APIs and no way to pull in users' real activity from their wearables.
02 — The decision
Optimize the hot analytics paths first, then integrate the wearables users already wore.
03 — Architecture
- Optimized analytics APIs, cutting response time 70–80%
- Habit tracker for daily targets and progress
- Garmin + Fitbit API / webhook integrations
04 — Outcome
Faster insights and activity that syncs straight from users' devices.
Stack
NestJSFitbitGarminAWSMongoDB