Johnson Ngui

Key Skills

Software

Remotasks

Top Subject Matter

Generative AI

Llms Domain Expertise

Safety/bias Domain Expertise

Top Data Types

Text

Image

Document

Top Task Types

Classification

Freelancer Overview

AI Data Annotator / Reviewer. Core strengths include Internal, Proprietary Tooling, and Remotasks. Education includes Bachelor of Science, Chuka University. AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

AI Data Annotator / Reviewer

Text

As an AI Data Annotator and Reviewer at Avala AI, I worked extensively on large-scale generative AI training datasets. My focus was on annotating, reviewing, and validating complex text data for model training and evaluation. I played a key role in enforcing annotation guidelines and ensuring output quality across production projects. • Reviewed model outputs for reasoning, accuracy, and compliance • Validated annotations and provided corrective feedback to team members • Flagged ambiguous or policy-violating cases for escalation • Maintained throughput and quality against performance benchmarks

As an AI Data Annotator and Reviewer at Avala AI, I worked extensively on large-scale generative AI training datasets. My focus was on annotating, reviewing, and validating complex text data for model training and evaluation. I played a key role in enforcing annotation guidelines and ensuring output quality across production projects. • Reviewed model outputs for reasoning, accuracy, and compliance • Validated annotations and provided corrective feedback to team members • Flagged ambiguous or policy-violating cases for escalation • Maintained throughput and quality against performance benchmarks

2024 - 2025

AI Data Annotator / Reviewer

Text

I served as AI Data Annotator and Reviewer with Outlier AI, focusing on prompt–response evaluation for LLM training. I annotated and ranked model-generated text outputs, assessed answer quality, and participated in rigorous review workflows. My contributions supported the continuous improvement of LLM dataset reliability. • Performed factuality and coherence checks on model responses • Identified hallucinations and low-quality answers • Actively engaged in peer review to enforce annotation standards • Navigated evolving guidelines to maintain labeling consistency

I served as AI Data Annotator and Reviewer with Outlier AI, focusing on prompt–response evaluation for LLM training. I annotated and ranked model-generated text outputs, assessed answer quality, and participated in rigorous review workflows. My contributions supported the continuous improvement of LLM dataset reliability. • Performed factuality and coherence checks on model responses • Identified hallucinations and low-quality answers • Actively engaged in peer review to enforce annotation standards • Navigated evolving guidelines to maintain labeling consistency

2023 - 2023

AI Data Annotator

RemotasksTextClassification

At Remotasks, I completed large-scale data labeling for NLP and computer vision projects covering various modalities. My work included text, image, and video annotation, as well as 2D and 3D tasks for model training and validation. I followed strict instructions and quality standards to ensure dataset accuracy and consistency. • Labeled diverse datasets for NLP and computer vision • Worked on classification and validation tasks in 2D/3D • Applied attention to detail in every assignment • Met high productivity and accuracy expectations

At Remotasks, I completed large-scale data labeling for NLP and computer vision projects covering various modalities. My work included text, image, and video annotation, as well as 2D and 3D tasks for model training and validation. I followed strict instructions and quality standards to ensure dataset accuracy and consistency. • Labeled diverse datasets for NLP and computer vision • Worked on classification and validation tasks in 2D/3D • Applied attention to detail in every assignment • Met high productivity and accuracy expectations

2022 - 2023

Education

Work History