Worked on enhancing EVM execution limit configuration across alloy-rs/evm, okx/optimism, and paradigmxyz/reth repositories, focusing on backend and blockchain development using Rust. Delivered a refactored approach to EVM environment setup by introducing a dedicated structure for limit parameters and implementing the EvmEnv::with_limits() method, enabling more flexible and spec-compliant configurations. Updated and expanded test coverage to ensure precise handling of gas limits and contract sizes, aligning with fork-aware defaults such as Osaka. Unified the configuration strategy across multiple codebases, improving transaction validation, resource protection, and readiness for future Ethereum forks without introducing any new bugs.