Developer builds synthetic data tool after embarrassing demo with placeholder test data

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A software developer created a test data generation tool called fundata.dev after a client demo exposed placeholder entries like 'Test User 1' and 'aaa@aaa.com' in a live dashboard. The tool generates reproducible, realistic synthetic data in multiple formats including SQL, JSON, and NDJSON to suit databases, mock APIs, and data pipelines. A key motivation was avoiding the legal risks of using real customer data in staging environments, which can violate privacy regulations like GDPR. The tool allows developers to define a schema once and generate thousands of rows with configurable NULL rates, helping surface bugs caused by edge cases such as apostrophes in names or unexpectedly long strings. The author notes that uniform test data masks entire categories of production bugs that only realistic, varied data can expose.

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