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AndroidiOSMobileTradingFinTech
Angel One Trading App
Angel One
Led the mobile engineering team responsible for the core trading experience, including real-time market data, order execution, and portfolio management features. The platform handles millions of transactions daily during peak market hours.
Role
Senior Mobile Engineering Manager
Duration
2020 - 2021
Team
Team of engineering managers and 25+ engineers
Platforms
Android, iOS
Tech Stack
AndroidKotlinWebSocketClean Architecture
Key Challenges
- Handling real-time market data updates for thousands of instruments simultaneously
- Ensuring order execution reliability during high-volatility market conditions
- Building offline-capable portfolio views with eventual consistency
What I Built
- Implemented efficient diff-based UI updates with RecyclerView optimizations
- Built redundant order submission paths with automatic failover
- Designed local-first architecture with background sync for portfolio data
Results & Impact
Platform processed 1M+ daily transactions reliably
Reduced order placement latency to under 100ms
Zero trading outages during market hours