Contact person: Business Client

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Location: New Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a native iOS/ android application that lets users trade derivatives seamlessly from their phones. The core of the product is real-time market data combined with professional-grade charting, so latency and rendering speed are critical. Users must be able to place, modify and cancel orders through a broker API; every executed trade should immediately update an intraday PnL dashboard.

The build will be in Swift (SwiftUI is fine if you’re comfortable with it). Please architect it for modular growth—while the first release focuses only on derivatives, I want a codebase that can later accommodate stocks, crypto or forex without a major rewrite.

Key deliverables
• Real-time market data feed integrated and displayed
• Multi-timeframe advanced charting with technical indicators
• Order entry / execution flows wired to the broker’s REST & WebSocket endpoints
• In-app algorithm management screen where users can toggle predefined trading algos
• Live and historical PnL dashboards with export to CSV / JSON

Acceptance criteria
1. Round-trip order latency under 200 ms in a simulated production environment.
2. No data drift greater than one tick when tested against the broker’s native terminal for 30 minutes.
3. App must pass App Store TestFlight review without crashes or policy flags.

If this aligns with your expertise, tell me about similar trading or low-latency finance projects you’ve shipped and which broker APIs or market data vendors you’ve already worked with." (client-provided description)