Kelvin K.

Key Skills

Software

Mindrift

CloudFactory

Data Annotation Tech

Lionbridge

Toloka

Top Subject Matter

AI response safety QA

e-commerce categorization

and search/recommendation evaluation

Top Data Types

Text

Document

Top Task Types

Evaluation/Rating

Data Collection

Segmentation

Freelancer Overview

Data Annotator/QA Expert at Mindrift. Brings 9+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Mindrift. Education includes Certified Data Scientist, African Center for Data Science and Analytics (2025) and Bachelor of Business Information Technology, Multimedia University of Kenya (2018). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Labeling Experience

Data Annotator/QA Expert at Mindrift

MindriftText

Compared AI prompt/response outputs against safety, helpfulness, and factual accuracy criteria to ensure compliance and quality. Reviewed e-commerce product submissions and verified that items aligned with the correct shopping website categories. Evaluated pair-wise search results to identify better ranking and recommendation options for the underlying algorithm. • Safety, helpfulness, and factuality checks for AI responses • Category alignment verification for shopping/product data • Pair-wise search result comparison to improve recommendations • QA review of other annotators’ submissions with feedback

2024 - 2025

Education

Work History