Queen Wangui

Detail-oriented Data Annotation Specialist based in Nyeri, Kenya, with 3+ years of experience delivering high-quality visual data labeling for machine learning and AI training. Adept at executing precise bounding boxes, semantic segmentation, keypoint marking, and OCR text transcription under strict project guidelines. Equipped with an advanced command of English, a high-performance Windows 11 setup, and a strong commitment to data accuracy and consistency.

Freelance Data Annotator / Quality Control Specialist - Freelance

• Annotate diverse datasets containing over 20,000+ images, mapping out specific objects including vehicles, pedestrians, animals, and infrastructure elements.
• Execute precise semantic segmentation and outline irregular shapes like roads, signage, and buildings with a 99%+ accuracy rating.
• Perform precise keypoint marking on human joints and structural corners to train advanced computer vision models.
• Transcribe complex text from images exactly as displayed, maintaining flawless accuracy with capitalization, spacing, and punctuation.
• Review, audit, and correct existing annotations during quality control phases to ensure strict consistency before final client submission.

Data Entry Operator & Transcriber - Remote

• Inputted and managed large volumes of alphanumeric data into secure databases with an emphasis on speed and precision.
• Transcribed audio and text-from-image files, strictly adhering to formatting guidelines and quality benchmarks.
• Identified and corrected data discrepancies, improving overall database integrity by 15%.
• Adapted quickly to proprietary software and shifting project specifications on short notice.

Diploma - Data Science