Big Data Engineer Cover Letter Template

Dear Hiring Manager, In my last role, I led a move to a cloud-based data lake and helped the team simplify data access for analytics. Our pipeline now ingests terabytes nightly, with Spark jobs completing in under 15 minutes for typical dashboards. I’ve found that clear ownership and practical tooling make a real difference when workstation and production environments diverge. I’m drawn to [Company Name] because the role sits squarely at the intersection of data engineering and platform reliability. My background includes Hadoop and Spark, Python and Scala, and building scalable ETL and streaming workflows. I’ve worked with cloud platforms like AWS and GCP, and I’m comfortable tuning distributed systems for lower latency and higher throughput. One memorable project involved rearchitecting a data processing stack that fed machine learning models. We replaced a noisy batch cycle with a streaming layer and a compact data lake, which significantly improved data freshness and reduced batch window times. It was all about clear contracts, incremental changes, and testing everything end to end with reproducible builds. I’m available to discuss how my hands-on approach could help [Company Name]’s data platforms mature further. If you’d like, I can fit time for a quick chat next week. Kind regards, [Your Name]