Charles I.

Key Skills

Software

Other

Top Subject Matter

LLM evaluation and preference ranking (human feedback/RLHF)

Audio transcription and language quality assurance

Content verification and quality assurance (text)

Top Data Types

Text

Audio

Document

Top Task Types

RLHF

Transcription

Freelancer Overview

AI Data Labeling Specialist (Preference Ranking) — Outlier AI (Remote). Brings 9+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Arts, Nnamdi Azikiwe University. AI-training focus includes data types such as Text, Audio, and Document and labeling workflows including RLHF, Transcription, and Evaluation.

Labeling Experience

Founder & Lead Content Strategist — De'Gur Writing Services

OtherDocument

Provided structured human verification and editorial review of written content for accuracy, clarity, and logical consistency. Ensured deliverables adhered to client requirements through systematic content quality control. Produced analytical reports and long-form documentation requiring careful judgment and correctness checks. • Verified information accuracy for academic and digital communication materials • Edited/reviewed text for grammar, logic, and clarity • Applied content quality control for consistency with requirements • Produced structured reports and long-form documentation

2018 - Present

Audio Transcription Specialist — Alignerr (Remote)

OtherAudioTranscription

Produced verbatim audio transcriptions following detailed transcription standards and formatting requirements. Reviewed and corrected transcripts to ensure linguistic accuracy, completeness, consistency, and overall quality. Identified unclear speech, speaker changes, timestamps, and contextual nuances to produce reliable language datasets. • Transcribed audio recordings verbatim with required formatting • Corrected transcripts for linguistic accuracy and completeness • Marked speaker changes and timestamps; captured contextual nuances • Applied quality assurance to deliver dependable language data

2026 - 2026

AI Data Labeling Specialist (Preference Ranking) — Outlier AI (Remote)

OtherTextRLHF

Performed preference ranking to select the preferred response among multiple AI-generated options according to project guidelines. Assessed instruction following, factual accuracy, reasoning quality, completeness, clarity, coherence, tone, and overall usefulness using detailed annotation frameworks. Detected hallucinations, logical inconsistencies, and weak reasoning, then provided human feedback to improve large language model alignment. • Compared multiple model responses and selected the preferred output • Followed structured annotation guidelines for evaluation criteria • Wrote structured rationales justifying each preference decision • Reported quality issues such as hallucinations and factual errors

2025 - 2026

Education

Work History