Sharon Wambui

Key Skills

Software

Appen

Clickworker

Labelbox

Mindrift

Toloka

Telus

Top Subject Matter

No subject matter listed

Top Data Types

Image

Text

Video

Top Task Types

Classification

Data Collection

Evaluation Rating

Question Answering

Red Teaming

Freelancer Overview

I have experience in AI training and data labeling, creating prompts and instructions for language models and evaluating their outputs. I annotate text for tasks like classification, sentiment analysis, and intent recognition, ensuring accuracy, clarity, and consistency. I also review AI-generated content for tone, bias, and usefulness, using my writing and editing skills to spot errors and improve quality. I work efficiently on high-volume tasks, adapt quickly to changing guidelines, and bring a strong understanding of language and human intent to every project.

Labeling Experience

Video Annotation & Multimodal Data Labeling

TelusVideoObject DetectionAction Recognition

Annotated and reviewed video datasets for AI training, focusing on object detection, action recognition, and video classification tasks. Labeled moving objects across frames, identified actions and events, and evaluated video content for accuracy and consistency according to detailed project guidelines. Performed quality checks on annotated videos, corrected labeling errors, and ensured alignment with frame-level instructions. Worked with multimodal datasets combining video and text instructions, maintaining high precision while handling large volumes of data under strict quality standards.

Annotated and reviewed video datasets for AI training, focusing on object detection, action recognition, and video classification tasks. Labeled moving objects across frames, identified actions and events, and evaluated video content for accuracy and consistency according to detailed project guidelines. Performed quality checks on annotated videos, corrected labeling errors, and ensured alignment with frame-level instructions. Worked with multimodal datasets combining video and text instructions, maintaining high precision while handling large volumes of data under strict quality standards.

2025 - 2025

LLM Text Annotation & Output Evaluation

AppenTextClassificationQuestion Answering

Worked on annotating and evaluating AI-generated text for accuracy, tone, bias, and clarity. Created structured prompts and instruction sets to test LLM responses across domains such as creative writing, instruction-following, and ethical scenarios. Classified text by intent, sentiment, and topic, and provided feedback for model improvement. Handled high-volume tasks while ensuring strict quality standards and adherence to evolving project guidelines.

Worked on annotating and evaluating AI-generated text for accuracy, tone, bias, and clarity. Created structured prompts and instruction sets to test LLM responses across domains such as creative writing, instruction-following, and ethical scenarios. Classified text by intent, sentiment, and topic, and provided feedback for model improvement. Handled high-volume tasks while ensuring strict quality standards and adherence to evolving project guidelines.

2023 - 2025

Education

Work History