Contributed to the Soda Core V4 release, focusing on enhancing the data quality and data contract verification engine within the sodadata/soda-core repository. Leveraged Python development and CI/CD practices to enable the definition and validation of data quality contracts across multiple data sources, supporting improved data governance and analytics reliability. Collaborated closely with a team of co-authors to deliver a foundational feature that strengthens cross-source data quality enforcement. The work emphasized data quality assurance and contract verification, reducing quality risks and accelerating feedback loops in analytics pipelines. This release established a robust framework for scalable, multi-source data quality management.