Alon focused on enhancing the reliability and correctness of the sequencing pipeline in the starkware-libs/sequencer repository. He implemented improvements to block fullness detection by comparing execution results to input transactions, ensuring that block status accurately reflected true capacity. Using Rust and integration testing, Alon addressed edge cases in block building to prevent mis-ordered or dropped transactions as blocks approached their limits. He expanded test coverage to verify sequencer behavior under full-capacity scenarios and refined error handling to provide clear status reporting. This work deepened the robustness of backend systems for smart contracts on StarkNet, emphasizing correctness and maintainability.