Onyeka J.

Key Skills

Software

Appen

Other

Top Subject Matter

Fact-checking for AI training data

online content verification

Data research and dataset preparation

Top Data Types

Text

Audio

Document

Top Task Types

Data Collection

Transcription

Text Summarization

Freelancer Overview

AI Data Contributor / Fact-Checking Specialist – CrowdGen by Appen (Project Uolo) (Remote). Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen and Other. Education includes Bachelor of Science, Olabisi Onabanjo University. AI-training focus includes data types such as Text, Audio, and Document and labeling workflows including Evaluation, Rating, and Data Collection.

Labeling Experience

AI Data Contributor / Fact-Checking Specialist – CrowdGen by Appen (Project Uolo) (Remote)

AppenText

Provided fact-checking and verification for online content used to improve AI training datasets. Reviewed claims and validated them using credible sources, databases, and web research while following strict project guidelines. Assessed content for accuracy, misinformation, and contextual correctness and maintained consistent quality scores under deadlines. • Validated information for AI dataset reliability • Conducted misinformation detection and accuracy checks • Ensured compliance with annotation/quality guidelines • Delivered timely outputs in a remote annotation environment

2021 - Present

Data Researcher – Freelance (Market Research Firms, Startups, Academic Institutions)

OtherTextData Collection

Collected, verified, and organized large datasets to support research projects with an emphasis on maintaining data quality. Produced structured reports and summaries to help stakeholders make informed decisions. Ensured consistent accuracy standards across assigned tasks. • Gathered and verified dataset content • Organized data for downstream research use • Generated structured summaries and reports • Maintained accuracy and quality benchmarks

2023 - 2024

Virtual Assistant – Freelance (Entrepreneurs & Executives)

OtherDocumentText Summarization

Created accurate summaries, reports, and structured documentation from client meeting information. Managed client communications and administrative document workflows in remote settings. Maintained confidentiality and supported efficient operations for entrepreneurs and executives. • Summarized meeting outputs into structured documentation • Produced reports for client communication • Managed administrative documents remotely • Ensured confidentiality and timely delivery

2021 - 2024

Transcription Specialist – Freelance

OtherAudioTranscription

Produced Clean Verbatim and Full Verbatim transcripts for meetings, interviews, and conversations. Managed audio quality challenges including different accents and background noise while handling confidential content. Followed formatting guidelines and delivered accurate transcripts within deadlines. • Transcribed spoken audio into clean verbatim text • Produced full verbatim transcripts with detailed wording • Ensured adherence to transcription formatting standards • Transcribed confidential content accurately and on time

2021 - 2024

Education

Work History