Lewis Muchui

Key Skills

Software

Data Annotation Tech

Labelbox

Mercor

Mindrift

Roboflow

Top Subject Matter

No subject matter listed

Top Data Types

Audio

Computer Code Programming

Image

Text

Video

Top Label Types

Bounding Box

Prompt Response Writing SFT

RLHF

Segmentation

Transcription

Translation Localization

Freelancer Overview

I am an experienced AI technical specialist with a strong background in data annotation, labeling, and RLHF-based model evaluation for computer vision and NLP projects. My expertise spans complex annotation tasks—such as bounding boxes, polygons, key points, and semantic segmentation—along with rigorous QA, error correction, and transcription for speech recognition and sentiment analysis datasets. I am skilled in Python, JavaScript, JSON/YAML, and workflow optimization, and have contributed to high-impact projects with Triviat AI and Kyota AI, ensuring data integrity and high-fidelity model outputs. My academic foundation in data science, chemistry, and communications, combined with hands-on experience in instructional design and technical writing, allows me to deliver precise, scalable solutions for AI training data in diverse domains.

Labeling Experience

Transcription

Data Annotation TechImageBounding BoxSegmentation

Expert AI Evaluator specializing in Chemistry and STEM RLHF. I provide rigorous, step-by-step solutions, identifying subtle errors in thermodynamics, kinetics, and stoichiometry. Leveraging my Oxford Master’s, I deliver precise, C1+ technical documentation and identify complex model hallucinations in scientific reasoning. Also annotating image and video.

Expert AI Evaluator specializing in Chemistry and STEM RLHF. I provide rigorous, step-by-step solutions, identifying subtle errors in thermodynamics, kinetics, and stoichiometry. Leveraging my Oxford Master’s, I deliver precise, C1+ technical documentation and identify complex model hallucinations in scientific reasoning. Also annotating image and video.

2018

Education

Work History