Snowflake & Sigma SQL Expert

I need help tightening up the SQL that powers several Sigma dashboards connected to Snowflake. The top priority is writing and optimising queries whose main job is to enforce data consistency—catching mismatches, duplicate keys, or any other integrity issues before numbers hit the dashboards.

Once the underlying SQL is solid, I’ll ask you to fold those updates back into the existing Sigma workbooks and, where it makes sense, design a few new visualisations or tweak current ones so users can immediately see when something drifts out of spec. Troubleshooting edge-case data issues and proposing small performance improvements along the way are very welcome.

Deliverables
• Clean, well-documented SQL scripts that validate data consistency in Snowflake
• Updated Sigma dashboards (or new ones where needed) pointing at the revised queries
• A short validation report outlining checks performed, issues found, and how they were resolved

If you have a track record of squeezing every millisecond out of Snowflake queries while keeping Sigma dashboards clear and reliable, I’d love to work with you.