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Samuel John

Freelance AI Data Annotator & Evaluator

NIGERIA flag
Remote, Nigeria
$12.00/hrIntermediateAppen

Key Skills

Software

AppenAppen

Top Subject Matter

Ai/general Domain Expertise

Top Data Types

TextText
AudioAudio

Top Task Types

Segmentation
Text Generation

Freelancer Overview

Freelance AI Data Annotator & Evaluator. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen. Education includes Bachelor of Pharmacy, Igbinedion University, Okada and Certificate, TestIO Academy. AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

IntermediateYorubaEnglish

Labeling Experience

Appen

Freelance AI Data Annotator & Evaluator

AppenText
As a Freelance AI Data Annotator & Evaluator, I annotated and labeled large-scale datasets comprising text, audio, and images to support supervised learning pipelines. My responsibilities included ranking and comparing AI responses based on strict rubrics focused on accuracy, relevance, safety, and instruction-following. I maintained high-quality standards and met daily quotas while providing clear rationales to improve reviewer agreement and dataset reliability. • Labeled and annotated text, audio, and image data for supervised learning. • Evaluated and compared AI model responses using structured criteria. • Consistently achieved high task throughput with strict adherence to guidelines. • Authored thorough rationales to justify labeling decisions and improve consensus.

As a Freelance AI Data Annotator & Evaluator, I annotated and labeled large-scale datasets comprising text, audio, and images to support supervised learning pipelines. My responsibilities included ranking and comparing AI responses based on strict rubrics focused on accuracy, relevance, safety, and instruction-following. I maintained high-quality standards and met daily quotas while providing clear rationales to improve reviewer agreement and dataset reliability. • Labeled and annotated text, audio, and image data for supervised learning. • Evaluated and compared AI model responses using structured criteria. • Consistently achieved high task throughput with strict adherence to guidelines. • Authored thorough rationales to justify labeling decisions and improve consensus.

2025 - Present

Education

T

TestIO Academy

Certificate, Software Testing and Quality Assurance

Certificate
Not specified
I

Igbinedion University, Okada

Bachelor of Pharmacy, Pharmacy

Bachelor of Pharmacy
Not specified

Work History

F

Freelance

Content Writer

Remote
2025 - Present
F

Freelance

QA Tester

Remote
2024 - Present