Joy Wangui

Key Skills

Software

Data Annotation Tech

Top Subject Matter

No subject matter listed

Top Data Types

Text

Top Label Types

RLHF

Fine Tuning

Prompt Response Writing SFT

Freelancer Overview

I am an experienced AI Pilot Assistant and Machine Learning Engineer with a strong background in data labeling, annotation, and the creation of high-quality AI training datasets, particularly for natural language processing (NLP) tasks. My expertise includes refining large language models through reinforcement learning from human feedback (RLHF), designing prompt templates to test edge cases, and conducting detailed QA evaluations to ensure model accuracy and safety. I have led projects involving sentiment analysis and automated data preprocessing, significantly improving data quality and processing efficiency. Proficient in Python, SQL, and tools like OpenAI API, Hugging Face, and Jupyter Notebooks, I excel at bridging technical model development with user-focused quality standards to deliver reliable and ethical AI solutions.

Labeling Experience

Reinforcement Learning from Human Feedback(RLHF) and model Aligment

Data Annotation TechTextRLHFFine Tuning

Evaluated and ranked AI-generated responses based on factuality, coherence, and safety. Authored complex prompts to test model reasoning and creative writing capabilities. Performed SFT (Supervised Fine-Tuning) by rewriting model outputs to meet "Gold Standard" quality, directly contributing to the reduction of model hallucinations and improved instruction-following.

Evaluated and ranked AI-generated responses based on factuality, coherence, and safety. Authored complex prompts to test model reasoning and creative writing capabilities. Performed SFT (Supervised Fine-Tuning) by rewriting model outputs to meet "Gold Standard" quality, directly contributing to the reduction of model hallucinations and improved instruction-following.

2021 - 2023

Education

Work History