Senior Software Engineer, Predictions (Mobile)

Responsibilities

• Build and maintain the Predictions mobile trading experience end-to-end: market browsing, order placement, portfolio views, and settlement flows.
• Architect performant, real-time UI for streaming market data (orderbook, price charts, position P&L) using modern React Native patterns (TurboModules, JSI, native navigator integration).
• Collaborate with backend engineers on gRPC and WebSocket integrations that power live trading surfaces.
• Create reusable, well-tested UI components shared across Predictions and the broader Gemini mobile app.
• Partner with product and design to shape mobile-specific UX for new contract categories (weather, economics, crypto, sports) and features like combo contracts and range contracts.
• Scope and implement solutions independently, making informed architecture decisions and tradeoffs around native vs. JS boundaries.
• Establish and improve mobile development processes — testing strategy, release quality gates, OTA vs. native release decisions.
• Conduct thorough code reviews and mentor other engineers on React Native best practices.
• Use analytics and experimentation data to inform product and engineering decisions around activation funnels, onboarding, and trading engagement.

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