nautilus-system

System-level components and orchestration for NautilusTrader.

The nautilus-system crate provides the core system architecture for orchestrating trading systems, including the kernel that manages all engines, configuration management, and system-level factories for creating components:

• NautilusKernel - Core system orchestrator managing engines and components.
• NautilusKernelConfig - Configuration for kernel initialization.
• System builders and factories for component creation, including caller-supplied clock construction for live/sandbox systems.

NautilusTrader

NautilusTrader is an open-source, production-grade, Rust-native engine for multi-asset, multi-venue trading systems.

The system spans research, deterministic simulation, and live execution within a single event-driven architecture, providing research-to-live semantic parity.

Feature flags

This crate provides feature flags to control source code inclusion during compilation:

• defi: Enables DeFi (Decentralized Finance) support.
• extension-module: Builds as a Python extension module.
• live: Enables live trading mode dependencies.
• python: Enables Python bindings from PyO3 and auto-enables streaming.
• streaming: Enables the nautilus-persistence dependency for streaming configuration.
• tracing-bridge: Enables the tracing subscriber bridge for log integration.

Documentation

See the docs for more detailed usage.

License

The source code for NautilusTrader is available on GitHub under the GNU Lesser General Public License v3.0.

NautilusTrader™ is developed and maintained by Nautech Systems, a technology company specializing in the development of high-performance trading systems. For more information, visit https://nautilustrader.io.

Use of this software is subject to the Disclaimer.

© 2015-2026 Nautech Systems Pty Ltd. All rights reserved.