Dear Hiring Manager,

I am writing to apply for the AI Data Annotation Specialist position at Scale AI. I bring hands-on experience in labeling and validating high-quality datasets used for machine learning and artificial intelligence models. My strong attention to detail, ability to follow strict annotation guidelines, and understanding of AI training workflows make me a strong fit for this role. I am motivated to contribute to projects that rely on accurate and consistent data to drive reliable AI outcomes.

In my previous role at Appen as an AI Data Annotation Specialist, I worked on large-scale image, text, and video annotation projects for computer vision and natural language processing models. My responsibilities included bounding box annotation, text classification, entity recognition, and sentiment tagging while meeting accuracy benchmarks and tight deadlines. I consistently received positive feedback during quality reviews for maintaining labeling consistency across datasets.

I also worked with TELUS International AI as a Data Labeling Analyst, where I supported dataset validation and quality assurance tasks. In this role, I collaborated with reviewers to identify annotation errors, flag ambiguous data, and suggest improvements to annotation guidelines. I regularly used industry-standard tools such as Labelbox, Amazon SageMaker Ground Truth, and CVAT, which helped improve workflow efficiency and dataset reliability.

My key skills include image and video annotation, text labeling, data classification, semantic segmentation, dataset auditing, and quality control. I am comfortable working with structured and unstructured data, managing repetitive tasks with focus, and adapting quickly to new annotation tools and evolving project requirements. I also understand the importance of data privacy and compliance when handling sensitive information.

To strengthen my technical knowledge, I have completed the Google Data Analytics Professional Certificate, IBM Machine Learning with Python, and Coursera’s AI for Everyone by Andrew Ng. These certifications have given me a strong understanding of how annotated data impacts model accuracy, bias reduction, and real-world AI performance.

I am excited about the opportunity to contribute to Scale AI’s mission of supporting advanced AI systems through high-quality training data. I would welcome the opportunity to discuss how my experience, skills, and certifications can support your annotation and AI operations teams.

Thank you for your time and consideration.

Sincerely,

Ethan Walker