Worked on the zio/zio-dynamodb repository to deliver backward-compatibility improvements for CaseClass codecs within the GenericRecordDecoder and Encoder. Focused on enhancing the handling of missing fields and empty documents, the changes reduced deserialization errors and increased resilience when processing diverse DynamoDB records. Applied skills in Scala, codec implementation, and schema derivation to ensure robust decoding and encoding paths. Expanded unit test coverage to address edge cases and strengthen regression safety, contributing to the maintainability and reliability of the module. The work improved data ingestion pipelines by minimizing runtime decoding errors and supporting evolving data schemas without breaking compatibility.