Victor O.

Key Skills

Software

Appen

Other

Top Subject Matter

Image evaluation for AI training and quality scoring.

Audio evaluation for AI training

Assessment Domain Expertise

Top Data Types

Image

Audio

Text

Top Task Types

Transcription

RLHF

Entity (NER) Classification

Freelancer Overview

Freelance Data Annotator and AI Trainer — Image Evaluation (Appen/Outlier). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen, Outlier, and Other. Education includes Bachelor of Arts, Obafemi Awolowo University (2023). AI-training focus includes data types such as Image, Audio, and Text and labeling workflows including Evaluation, Rating, and Transcription.

Labeling Experience

Freelance Data Annotator and AI Trainer — Language Processing (Text/NLP) (Appen/Outlier)

OtherTextEntity (NER) Classification

Completed language processing annotation tasks including text classification, named entity recognition, and sentiment analysis. Labeled outputs using task-specific definitions and ensured each annotation matched the provided criteria. Produced structured labels to support NLP dataset construction and quality improvement workflows. • Performed text classification per labeling schema• Conducted named entity recognition (NER)• Labeled sentiment according to defined categories• Produced response preference annotations when required

2024 - Present

Freelance Data Annotator and AI Trainer — Prompt Accuracy & RLHF Preference (Appen/Outlier)

OtherTextRLHF

Evaluated prompt accuracy tasks by comparing AI-generated responses against the original instructions. Assessed correctness, relevance, completeness, and reasoning quality to determine how well outputs satisfied the prompt. Performed language processing and preference-style annotations to support model training and improvement efforts.• Judged response correctness and relevance to instructions• Checked completeness and reasoning quality• Performed response preference annotation (RLHF)• Ensured guideline adherence for evaluation decisions

2024 - Present

Freelance Data Annotator and AI Trainer — Audio Transcription (Appen/Outlier)

AppenAudioTranscription

Transcribed audio recordings into written text with high precision for punctuation, formatting, and speaker identification. Followed project requirements to ensure transcripts aligned with the audio content and annotation specifications. Prioritized consistency and accuracy to produce usable labeled data for downstream tasks.• Transcribed audio into accurately formatted text• Maintained punctuation and formatting requirements• Included speaker identification where required• Verified alignment with project transcription standards

2024 - Present

Freelance Data Annotator and AI Trainer — Audio Evaluation (Appen/Outlier)

Audio

Performed remote audio evaluation tasks by rating spoken content for clarity, tone, naturalness, and accuracy across diverse audio samples. Applied task-specific guidelines to keep labels consistent and suitable for evaluation or dataset building. Completed work in high-volume batches while maintaining strong guideline adherence and attention to detail.• Rated audio attributes (clarity, tone, naturalness)• Checked accuracy of spoken content against instructions• Followed rubric-based criteria for each audio sample• Maintained consistent quality across task batches

2024 - Present

Freelance Data Annotator and AI Trainer — Image Evaluation (Appen/Outlier)

AppenImage

Completed remote image evaluation tasks by assessing visual content against detailed project guidelines and scoring rubrics. Labeled or rated items for accuracy, relevance, and overall quality to support downstream model or dataset requirements. Ensured consistency across batches by applying the same criteria throughout each submission.• Assessed visual accuracy and relevance per rubric• Performed quality checks against guideline requirements• Maintained reliable output for high-volume task batches• Followed detailed scoring standards for each item

2024 - Present

Education

Work History