Worked on the across-protocol/sdk repository, focusing on backend development and API integration using TypeScript. Delivered a critical bug fix to ensure deterministic multicall chains, improving reliability and predictability for on-chain operations. Explored resilience strategies for Arweave client interactions by implementing and then rolling back configurable retry logic, prioritizing stability and maintaining a clean codebase. Managed release versioning updates to ensure metadata consistency and deterministic builds, with explicit commit documentation for auditability. Emphasized error handling and code traceability throughout, maintaining high standards for release hygiene and risk management. The work demonstrated careful attention to integration quality and operational correctness.