Prediction Market Arbitrage Bot
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Automated sub-$1.00 binary pair execution on Polymarket with real-time risk controls and live monitoring.
2025-01 • In Progress
Domain: FinTech, Algorithmic Trading, Systems Engineering
Tech: Rust, TypeScript, React, Redis, WebSockets, Polymarket CLOB API, Raspberry Pi
Impact
- Built an automated arbitrage strategy that accumulated both sides of binary markets below $1.00 combined cost, creating guaranteed payout spread before fees.
- Protected deployed capital with allocation buckets, imbalance guards, and deferred refunds that prevented overspending during cancel-fill race conditions.
Responsibilities
- Engineered the core execution engine in Rust with live market-data streaming, opportunity detection, and post-only limit ladder placement.
- Implemented Redis-backed state, automatic position reconciliation from the Polymarket Data API, and safe paper/live trading mode switching.
Key Features
- Real-time WebSocket price streaming and cross-side arbitrage detection
- Post-only order management with layered limit orders, cancellations, and re-quoting
- Bucket-based capital allocation across mid, outer, extreme, and savings bands
- Live React dashboard for positions, per-side orders, P/L, and resolved market history
Architecture
- Rust trading service connected to Polymarket CLOB market data and execution endpoints
- Redis persistence for orders, fills, balances, and restart-safe recovery
- TypeScript/React dashboard backed by a WebSocket-enabled REST API
- Raspberry Pi deployment for always-on execution and monitoring
