Williams Obiajulu

Key Skills

Software

Toloka

Clickworker

Top Subject Matter

Generative AI/Language Models

Web Search and Content Moderation AI

Top Data Types

Text

Image

Top Task Types

Transcription

Evaluation/Rating

RLHF

Text Summarization

Question Answering

Freelancer Overview

AI Data Annotator / Freelance Content Specialist. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Toloka and Clickworker. Education includes Bachelor of Arts, Anambra State University (2025) and West African Senior School Certificate, Secondary School, Lagos (2020). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Labeling Experience

AI Data Annotator – Web Page Quality Assessment

ClickworkerText

As an active contributor to the UHRS platform via Clickworker, I participated in AI data labeling tasks focused on web page and content quality evaluation. My responsibilities included judging the relevance, usefulness, and accuracy of search results and online content for AI model training. I successfully completed training qualifications and consistently applied objective evaluation criteria while annotating web-based information. • Assessed web search results for relevance and accuracy • Used established checklists and annotation standards • Collaborated with global team guidelines for AI data work • Maintained a reliable task completion record

As an active contributor to the UHRS platform via Clickworker, I participated in AI data labeling tasks focused on web page and content quality evaluation. My responsibilities included judging the relevance, usefulness, and accuracy of search results and online content for AI model training. I successfully completed training qualifications and consistently applied objective evaluation criteria while annotating web-based information. • Assessed web search results for relevance and accuracy • Used established checklists and annotation standards • Collaborated with global team guidelines for AI data work • Maintained a reliable task completion record

2025 - Present

AI Data Annotator / Freelance Content Specialist

TolokaText

I provided high-quality human feedback on AI-generated outputs, focusing on refining responses into natural, human-like English across various platforms. My annotation work involved critical evaluation, rewriting, and fact-checking for accuracy, logical coherence, and cultural nuance. I followed detailed platform guidelines to ensure consistently high standards, supporting the development and improvement of generative AI language models. • Delivered regular feedback and corrections to LLM outputs • Labeled errors and logical mistakes, improving reasoning in responses • Followed rigorous task guidelines and platform instructions • Managed weekly annotation workload efficiently

I provided high-quality human feedback on AI-generated outputs, focusing on refining responses into natural, human-like English across various platforms. My annotation work involved critical evaluation, rewriting, and fact-checking for accuracy, logical coherence, and cultural nuance. I followed detailed platform guidelines to ensure consistently high standards, supporting the development and improvement of generative AI language models. • Delivered regular feedback and corrections to LLM outputs • Labeled errors and logical mistakes, improving reasoning in responses • Followed rigorous task guidelines and platform instructions • Managed weekly annotation workload efficiently

2025 - 2026

Education

Work History