Dan M.

Key Skills

Software

AWS SageMaker

Anno-Mage

Figure Eight

Doccano

Diffgram

Top Subject Matter

Insurance

Health

Legal

Top Data Types

Image

Text

Audio

Top Task Types

Polygon

Bounding Box

Freelancer Overview

DAN MUGO WANJIRU Data Labeling Specialist | AI Training Data Contributor | Content Annotation & Quality Assurance Analyst Nairobi, Kenya +254 707075601 [email protected] PROFESSIONAL SUMMARY Detail-oriented Data Labeling Specialist with 5+ years of experience in structured content review, classification, annotation, and quality assurance across digital, educational, and research- based environments. Skilled in labeling, categorizing, reviewing, and refining text-based data for AI training systems, ensuring accuracy, consistency, and strict adherence to guidelines. Experienced in evaluating written content for correctness, clarity, tone, relevance, and structure, with strong ability to detect inconsistencies, errors, and low-quality outputs. Comfortable working in high-volume, guideline-driven environments similar to AI data annotation pipelines. CORE COMPETENCIES • Data Labeling & Text Annotation • Content Classification & Categorization • AI Training Data Preparation • Instruction-Based Task Execution • Quality Assurance (QA) for Text Data • Response Evaluation & Ranking • Error Detection in Structured Data • Content Normalization & Standardization • Grammar, Tone & Clarity Assessment • Dataset Consistency Review • Instruction Compliance Checking DATA LABELING SKILLS • Text tagging and classification • Sentiment and tone labeling • Instruction-following evaluation • Response quality comparison (best vs weak outputs) • Identifying hallucinations and inaccurate content • Dat

Education

Work History