Developed Backrun Bundles Support for the flashbots/op-rbuilder repository, enabling submission and execution of backrun bundles within the platform. This work involved designing and implementing a new eth_sendBackrunBundle RPC method, creating scalable global and payload pools for managing backrun bundles, and integrating these features with the block builder to improve transaction ordering. Comprehensive documentation and metrics were added to enhance observability and support developer onboarding. The project was built using Rust and focused on API and back-end development within a blockchain context. No major bugs were addressed during this period, with efforts concentrated on feature delivery and reliability improvements.