Mathias A.

Key Skills

Software

Other

Top Subject Matter

Machine learning training data (images and texts) for technology clients

Search engine result relevance evaluation

Top Data Types

Image

Text

Video

Top Task Types

Classification

Freelancer Overview

Freelance Data Annotator & Search Engine Evaluator (Remote). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Data Analyst, CWW Tech Africa (2016). AI-training focus includes data types such as Image and Text and labeling workflows including Classification, Evaluation, and Rating.

Labeling Experience

Freelance Data Annotator & Search Engine Evaluator (Remote)

OtherText

Evaluated search engine results for relevance and quality to improve search algorithms for a major technology company. Applied analytical judgment to determine whether results matched search intent and provided value to users. Documented findings as part of ongoing evaluation work to refine ranking behavior. • Assessed search results based on relevance, quality, and intent alignment • Contributed feedback to support search algorithm refinement • Maintained consistent evaluation standards across queries • Delivered ratings/evaluations within project deadlines

2020 - Present

Freelance Data Annotator & Search Engine Evaluator (Remote)

OtherImageClassification

Performed detailed annotations for over 5,000 images and texts to support machine learning training sets for multiple tech clients. Ensured annotation quality to enhance AI algorithm accuracy and reliability. Collaborated remotely with clients to meet labeling requirements and deadlines. • Annotated image-related training data with attention to label consistency • Supported multiple client projects and maintained high accuracy • Contributed to improving ML model performance through data quality • Managed task completion under tight turnaround timelines

2020 - Present

Education

Work History