ETL Developer Cover Letter Template

Dear Hiring Manager, I’ve spent the last few years building and refining ETL processes that teams rely on day to day. In my current role I mapped data flows across SQL Server and Snowflake, and I’ve implemented error handling and data quality checks that caught issues before they reached reporting. For a project with [Previous Company], I helped migrate 2.5 TB of data and significantly improved load reliability by reducing job failures to under 1% per month. My approach focuses on solid data integration and clear ownership of datasets. I’m comfortable with SQL scripting, orchestration tools, and practical data quality rules. I’ve worked with teams to define data lineage, implement incremental loads, and tune transforms so pipelines run efficiently without sacrificing accuracy. I’m keen to bring that mix of hands-on work and practical problem solving to [Company Name]. I can share a concrete example from a past project: we reworked a nightly ETL that pulled from multiple sources, added validation at key steps, and introduced a staging area for cleansing. The result was more stable nightly runs and quicker diagnostic feedback when issues occurred. It wasn’t flashy, but it mattered to the analytics team and helped reduce late-night firefighting. I’m available to chat about how my experience fits the needs of this role at [Company Name]. If it helps, I can bring a short walk-through of a recent data flow diagram and a couple of concrete optimisations I’d consider for your environment. Kind regards, [Your Name]