Worked on the extenda/hiiretail-json-schema-registry, focusing on enhancing data quality and supporting compliant invoicing workflows. Developed a new CCC kind within the VAT invoice schema to standardize categorization, enabling smoother downstream integrations for invoicing systems. Addressed schema registry robustness by resolving inconsistencies, specifically replacing plural 'examples' with the singular 'example' in schema definitions and making the logoUrl field nullable to accommodate missing assets. Leveraged skills in data modeling, JSON Schema, and schema design, primarily using JSON. The work improved data resilience, reduced integration errors, and ensured that the schema registry better supports evolving business and technical requirements.