A Machine Learning Engineer cover letter that gets read.

Dear Hiring Manager, I am interested in the Machine Learning Engineer position at [Company]. With [X years] of experience building production ML systems, I have developed expertise in model architecture design, feature engineering, and deployment pipelines. At [Previous Company], I led the development of a recommendation system that improved user engagement by [specific metric], processing [scale] data daily using PyTorch and Apache Spark. This project required end-to-end ownership from problem framing through A/B testing, which aligns closely with how I understand this role operates. My technical foundation spans supervised and unsupervised learning, with particular strength in [specific domain: NLP/CV/forecasting/etc.]. I've implemented data pipelines using [relevant tools: Airflow/Kubeflow/dbt], optimized model inference latency by [percentage/metric], and collaborated with data engineers to establish monitoring systems that catch model drift before it impacts users. I'm comfortable working in both Python and [secondary language], and I approach ML problems with a focus on maintainability and reproducibility rather than just accuracy scores. Beyond technical skills, I've learned that successful ML work requires translating between business impact and technical constraints. At [Company/Project], I worked directly with product teams to scope a [specific problem], making trade-offs between model complexity and inference speed that ultimately shipped on time. I'm drawn to [Company] specifically because [mention something concrete about their ML approach/products/research], and I'm excited to bring my background in [specific capability] to your team. I'm happy to discuss how my experience with [one concrete project/technology] could contribute to your roadmap. Thank you for considering my application.