Kioko Mwanzia

Key Skills

Software

CVAT

Mindrift

Top Subject Matter

AI/NLP Text Data

Top Data Types

Text

Video

Top Task Types

Prompt + Response Writing (SFT)

Freelancer Overview

Data Annotation Specialist, Handshake AI. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT and Mindrift. Education includes Bachelor of Education, Kisii University (2023). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

Labeling Experience

Data Annotation Specialist, Handshake AI

CVATText

As a Data Annotation Specialist at Handshake AI, I annotated and labeled diverse datasets to support machine learning model training and fine-tuning. My responsibilities included evaluating AI-generated text for accuracy, tone, coherence, and linguistic quality according to defined rubrics. I also identified and flagged errors or inconsistencies, providing actionable improvement notes. • Collaborated with QA specialists to maintain content standards. • Worked primarily with English and Swahili language data. • Ensured adherence to project-specific guidelines and rubrics. • Refined outputs for improved model performance.

As a Data Annotation Specialist at Handshake AI, I annotated and labeled diverse datasets to support machine learning model training and fine-tuning. My responsibilities included evaluating AI-generated text for accuracy, tone, coherence, and linguistic quality according to defined rubrics. I also identified and flagged errors or inconsistencies, providing actionable improvement notes. • Collaborated with QA specialists to maintain content standards. • Worked primarily with English and Swahili language data. • Ensured adherence to project-specific guidelines and rubrics. • Refined outputs for improved model performance.

2026 - Present

AI Trainer – Writer/Data Annotator, Mindrift

MindriftTextPrompt Response Writing SFT

As an AI Trainer – Writer/Data Annotator at Mindrift, I created original, fact-checked responses used for training AI models in reasoning, logic, nuance, and clarity. I strictly followed style and quality standards to generate high-quality training data. I participated in project-based tasks requiring 10–20 hours per week and collaborated with QA Specialists for content review. • Crafted content for both English and Swahili datasets. • Focused on prompt and response writing for language models. • Ensured project deliverables met specified style guides. • Regularly refined outputs based on feedback.

As an AI Trainer – Writer/Data Annotator at Mindrift, I created original, fact-checked responses used for training AI models in reasoning, logic, nuance, and clarity. I strictly followed style and quality standards to generate high-quality training data. I participated in project-based tasks requiring 10–20 hours per week and collaborated with QA Specialists for content review. • Crafted content for both English and Swahili datasets. • Focused on prompt and response writing for language models. • Ensured project deliverables met specified style guides. • Regularly refined outputs based on feedback.

2025 - 2026

Education

Work History