Nancy Kinyua - AI Data Annotator -Text Classification and Rating

Key Skills

Software

Appen

Other

Top Subject Matter

Customer Service -Chatbots &Support

E-commerce-product Descriptions & Reviews

Technology-AI & Machine learning

Top Data Types

Text

Document

Top Task Types

Evaluation Rating

Transcription

Classification

Freelancer Overview

Detail-oriented AI Data Annotator with strong skills in prompt analysis, response evaluation, and data labelling for machine learning systems. Experienced in reviewing AI-generated outputs to assess accuracy, reasoning quality, and instruction adherence. Skilled at following complex guidelines and maintaining high consistency when working with training datasets. Known for strong English comprehension, analytical thinking, and delivering reliable, high-quality work in remote AI training environments.

ExpertEnglishSwahili

Labeling Experience

Ranking Chatbot Responses for Helpfulness

TextEvaluation Rating

Compared two AI-generated answers to the same user question and selected which one was more helpful, accurate, and harmless.Labeled 500 prompts across topics like general knowledge, writing help, and basic math. Followed a simple rubric: helpful >vague, accurate> made-up info, safe>toxic.Weekly feedback sessions improved consistency.

2024 - Present

Email Classification for Spam Detection

TextClassification

Labeled 2,000 emails as either "spam" or "not spam" to help train a simple email filter.Each email was reviewed and tagged using a basic labelling tool.Worked with a small team of 3 people. A second person double checked 10% of the emails to ensure accuracy.

2024 - 2026

Education

N

NIBS Technical College

NIBS Technical College (no degree), Communications

NIBS Technical College (no degree)

2023 - 2024

Work History

C

CrowdGen by Appen

Speech Data and Transcription Contributor (Freelance)

Nairobi

2025 - Present