Case Study
Cross-Exchange Smart Order Routing & Execution System
Built a production-grade Smart Order Router and Consolidated Order Book engine to execute large-notional crypto orders across fragmented venues with minimal market impact.
Challenge
Stratos Capital needed institutional-grade execution infrastructure for large OTC and programmatic crypto orders. Naive single-venue market-taking was causing significant slippage and price impact. Liquidity was fragmented across exchanges with no unified depth view or intelligent routing layer.
Solution
Helios designed a Consolidated Order Book engine aggregating real-time depth across multiple exchanges to provide a unified liquidity view and execution path optimisation. A staggered execution engine split large parent orders into dynamically sized child orders executed simultaneously across venues, with adaptive participation rates and spread-sensitive placement. Capital pre-positioning and rebalancing mechanisms ensured efficient cross-exchange balance utilisation. Microstructure-aware routing logic incorporated order book imbalance analysis and adverse selection avoidance heuristics. Execution analytics tracked slippage vs arrival price, venue-wise quality, and full order lifecycle metrics.
Technical Responsibilities
- Designed a cross-exchange Smart Order Routing system for optimal execution of large OTC and programmatic orders with minimal market impact
- Architected a Consolidated Order Book engine aggregating real-time liquidity across multiple exchanges — providing unified depth, fragmentation analysis, and execution path optimisation
- Built routing algorithms to dynamically determine optimal venue selection, order slicing strategies, and capital distribution across exchanges
- Developed a staggered execution engine splitting large parent orders into child orders executed simultaneously across venues with dynamic real-time adaptation
- Implemented price impact minimisation strategies: liquidity-aware execution, adaptive participation rates, and spread-sensitive order placement
- Designed execution logic for slippage control, benchmark tracking, partial fill handling, intelligent re-routing, and real-time market adaptation
- Built systems to determine optimal capital placement across exchanges based on consolidated liquidity, execution demand, and transfer constraints
- Designed pre-positioning and rebalancing mechanisms for minimal execution delays and efficient cross-exchange balance utilisation
- Incorporated microstructure-aware decision logic: order book depth and imbalance analysis, spread dynamics, and adverse selection avoidance
- Developed execution analytics tracking slippage vs arrival price, venue-wise execution quality, and order lifecycle metrics
- Implemented fault-tolerant execution with exchange-level redundancy, failover routing, and robust error recovery
Outcomes
- Production-grade execution engine handling large notional orders with reduced market impact
- Consolidated Order Book providing real-time unified depth view and execution path optimisation across venues
- Institutional-style OTC execution workflow aggregating fragmented crypto liquidity into a single layer
- Foundation established for advanced adaptive routing and liquidity-aware execution strategies