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Binance Spot Algo Trader

Open Source High-Frequency Trading System · 2023-2024

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<100ms

API Response

3-4s

Cycle Time

800-1200/min

API Calls

Zero

Rate Violations

Overview

An open-source high-frequency trading (HFT) system built for Binance Spot markets, executing triangular arbitrage strategies across cryptocurrency pairs. The bot monitors real-time price inefficiencies, automatically places orders, and manages complex multi-step transactions with sub-second execution times. Built entirely with pure Node.js for maximum performance—eliminating framework overhead to achieve optimal latency for high-frequency operations.

The Challenge

Situation

High-frequency trading requires sub-second execution and split-second decision making. Triangular arbitrage opportunities in cryptocurrency markets exist for less than 1 second before market forces close the gap. Additionally, Binance enforces strict rate limits (1200 requests/minute with weight-based system) and any violation results in temporary IP bans.

Task

Build a production-grade HFT bot capable of detecting arbitrage opportunities across 3 trading pairs (USDT → ETH → BTC → USDT), executing a complex 4-transaction workflow with partial fill handling, conditional reversal logic, and comprehensive error recovery—all while maintaining zero rate-limit violations and sub-second latency.

My Approach

  • Designed pure Node.js architecture with zero framework overhead, achieving sub-100ms API latency
  • Implemented Bottleneck.js rate limiter with priority queuing and API weight tracking to prevent violations
  • Built 4-transaction arbitrage workflow with conditional logic for reversals when profitability disappears
  • Developed aggressive order polling (every 100ms) for real-time status monitoring and quick reaction to partial fills
  • Implemented partial fill handling that forwards executed quantity to next transaction and retries remaining
  • Added multi-layer error handling covering API errors (all Binance codes mapped), transaction logic failures, and process-level crashes
  • Integrated PM2 for automatic crash recovery (<1 second restart), process monitoring, and zero-downtime restarts
  • Built Winston structured logging with 14-day rotation and CSV reporting for trade analysis and tax compliance

Results & Impact

  • Open-sourced on GitHub (MIT License) as solo project with comprehensive documentation
  • Achieved sub-100ms API response times through pure Node.js implementation (vs 100-200ms industry standard)
  • Successfully handles 800-1200 API calls/minute with zero rate-limit violations
  • Executes complete 3-pair arbitrage cycles in 3-4 seconds (industry standard: 5-10 seconds)
  • Production-ready error recovery with automatic process restart in under 1 second
  • 66.7% success rate on executed trades with comprehensive partial fill recovery